KR101128585B1 - Pre-doping System of electrode and pre-doping method of electrode using the same - Google Patents

Abstract

The present invention relates to a pre-doping system of an electrode and a method of pre-doping an electrode using the same, doping means for performing a doping process for doping lithium ions to the electrode; Measuring means for performing a measuring step of measuring an open-circuit potential of the electrode; A switch unit for selecting and performing any one of the doping process and the measuring process; And a control unit which controls the doping means, the measuring unit, and the switch unit, and acquires an open circuit potential of the electrode measured from the measuring unit. .

Description

Pre-doping system of electrode and pre-doping method of electrode using the same}

The present invention relates to a pre-doping system for an electrode, and to a pre-doping system for an electrode having a measuring means for measuring the open-circuit potential of the electrode and a method of pre-doping the electrode using the same.

In general, electrochemical energy storage devices are a key component of finished devices essential for all portable information and communication devices and electronic devices. In addition, electrochemical energy storage devices will be reliably used as high quality energy sources in the renewable energy field that can be applied to future electric vehicles and portable electronic devices.

Among electrochemical energy storage devices, electrochemical capacitors may be classified into an electric double layer capacitor using an electric double layer principle and a hybrid supercapacitor using an electrochemical conversion-reduction reaction.

Here, the electric double layer capacitor is widely used in a field requiring high output energy characteristics, but the electric double layer capacitor has a problem such as a small capacity. In contrast, hybrid supercapacitors have been researched as a new alternative to improve the capacitance characteristics of electric double layer capacitors. In particular, the lithium ion capacitor (LIC) of the hybrid supercapacitor may have an accumulation capacity of about 3 to 4 times that of the electric double layer capacitor.

The process for forming a lithium ion capacitor includes a lamination process of forming an electrode stack by sequentially stacking a cathode, a separator, and a cathode having a sheet form, a welding process of welding terminals of the anode and the terminals of the cathode, and lithium on the cathode. A pretreatment doping process for pre-doping ions and a sealing process for sealing the electrode stack with aluminum may be included.

Here, the process for pre-doping lithium ions to the negative electrode may be achieved by providing a lithium metal film on each of the uppermost layer and the lowermost layer of the electrode laminate, and then immersing it in an electrolyte solution. This pre-doping process is performed by applying a voltage to the positive electrode and the negative electrode in the electrolyte, and the process of discharging between the positive electrode and the lithium metal several times, not only to build a device for applying an external current / voltage It takes 20 days for the lithium ions to be uniformly doped into the negative electrode provided in the electrode laminate, and there is a difficulty in mass production.

At this time, the pre-doping process may be performed on the negative electrode before the lamination process, and then the pre-doping process time may be shortened by performing the lamination process of the negative electrode, the separator and the positive electrode.

However, since the number of electrodes stacked on the high capacity lithium ion capacitor is increased, a doping process must be performed on each cathode, thereby increasing the process time for manufacturing a limited high capacity lithium ion capacitor.

In addition, since the lithium ion-doped negative electrode is very sensitive to moisture and is not easy to handle, it is difficult to confirm the doping level of the negative electrode during the doping process and during the assembling process, thereby making it difficult to secure the reliability of the lithium ion capacitor. However, there was a limit to the application to mass production.

Accordingly, in order to improve the mass productivity of the lithium ion capacitor, the pre-doping process was attempted to the cathode before lamination, but the pre-doping process could not be controlled on the cathode.

Accordingly, the present invention has been made to solve a problem that may occur in the pre-doping of the electrode, and specifically includes a measuring means for measuring the open-circuit potential of the electrode to perform the pre-doping process of the electrode. An object of the present invention is to provide a pre-doping system for an electrode which can be controlled and a method for pre-doping an electrode using the same.

It is an object of the present invention to provide a predoping system of electrodes. The pre-doping system of the electrode may include doping means for performing a doping process for doping lithium ions to the electrode; Measuring means for performing a measuring step of measuring an open-circuit potential of the electrode; A switch unit for selecting and performing any one of the doping process and the measuring process; And a control unit which controls the doping means, the measuring unit, and the switch unit, and acquires an open circuit potential of the electrode measured from the measuring unit.

Here, the doping means, a doping bath for receiving an electrolyte impregnating the electrode; And a metal impregnated in the electrolyte together with the electrode to supply the lithium ions.

In addition, a separator may be provided on one surface of the metal facing the electrode.

The switch unit may include: one side terminal connected to a common contact electrically connected to the source of lithium ions; And a second terminal selectively connected to a first contact electrically connected to the electrode or a second contact electrically connected to the electrode via the measuring means.

In addition, the electrode may include a current collector and an active material layer disposed on at least one surface of the current collector and reversibly doping and dedoping the lithium ions.

In addition, the temperature control unit for controlling the temperature of the doping means may be further included.

In addition, the temperature control unit may further include a heating means for heating the doping means.

In addition, the doping means may further include a moving means for inputting and discharging the electrode and the lithium ion source.

In addition, the moving means, the carrier for seating and moving the electrode and the source of the lithium ions; A sliding rail for guiding the movement of the carrier; And a driving unit to move the carrier on the sliding rail.

In addition, the source of the lithium ions may include a metal containing lithium ions disposed to face the electrode.

Another object of the present invention is to provide a pre-doping system of electrodes. The pre-doping system of the electrode comprises a doping bath for receiving an electrolyte; A carrier for impregnating or discharging the electrode and the metal in the electrolyte solution contained in the doping bath; A sliding rail for guiding the movement of the carrier; A driving unit for moving the carrier on the sliding rail; Measuring means for measuring an open circuit potential of the electrode; And a switch unit for selectively connecting the electrode, the metal, and the measuring means.

Here, the switch unit, one terminal connected to the common contact electrically connected to the metal; And a second terminal selectively connected to a first contact electrically connected to the electrode or a second contact electrically connected to the electrode via the measuring means.

In addition, the drive unit, a drive motor for generating a driving force; A timing belt rotating by the driving force; It may include a; lead screw for moving the carrier by the rotation of the timing belt.

The apparatus may further include heating means disposed under the doping bath to adjust the temperature of the electrolyte.

The display device may further include a display device configured to output the open circuit potential of the electrode in real time.

The display apparatus may further include an input device configured to input an operation signal for operating the driving unit, the measuring unit, and the switch unit.

In addition, the input device may include a touch panel.

In addition, a separator may be provided on one surface of the metal facing the electrode.

In addition, the terminal of the electrode may be exposed from the electrolyte.

In addition, the electrode may include a current collector and an active material layer disposed on at least one surface of the current collector and reversibly doping and dedoping the lithium ions.

It is another object of the present invention to provide a method of predoping an electrode. The method of pre-doping the electrode comprises the steps of: impregnating a metal and an electrode in the electrolyte; Doping lithium ions from the metal to the electrode; Measuring an open circuit potential of the electrode; And repeatedly performing the doping step and the measuring step until the open circuit potential of the electrode reaches a set value.

The measuring of the open circuit potential of the electrode may be performed after stopping the doping process of the electrode.

In addition, before the electrode doping process, the method may further include adjusting the temperature of the electrolyte.

The pre-doping system of the electrode according to the embodiment of the present invention includes a measuring means for measuring the open-circuit potential of the electrode, so that the doping level of the electrode can be verified, and thus the reliability and cycle of the lithium ion capacitor Properties can be improved.

In addition, the pre-doping system of the electrode according to the present invention is provided with a measuring means, it is possible to control the pre-doping process of the electrode, it can be easily applied to mass production through the process design.

In addition, the pre-doping system of the electrode according to the present invention may further include a temperature control unit to control the speed of the doping process.

1 is a conceptual diagram of a pre-doping system of an electrode according to a first embodiment of the present invention.
2 is a side cross-sectional view showing a specific form of a pre-doping system of an electrode according to a first embodiment of the present invention.
3 is a top view of the pre-doped system of the electrode shown in FIG.
4 is a process flowchart of a pre-doping process of an electrode according to a third embodiment of the present invention.

Embodiments of the present invention will be described in detail with reference to the drawing of the pre-doped system of electrodes. The following embodiments are provided by way of example so that those skilled in the art can fully understand the spirit of the present invention.

Therefore, the present invention is not limited to the embodiments described below, but may be embodied in other forms. In the drawings, the size and thickness of the device may be exaggerated for convenience. Like numbers refer to like elements throughout.

1 is a conceptual diagram of a pre-doping system of an electrode according to a first embodiment of the present invention.

Referring to FIG. 1, the pre-doping system 100 of an electrode according to the first exemplary embodiment of the present invention may include a doping means 110, a switch 130, a measuring means 140, and a controller 150. have.

The pre-doping system 100 of the electrode may be a device for doping lithium ions to the cathode prior to the deposition process of the anode, separator and cathode for manufacturing the lithium ion capacitor.

The doping means 110 may serve to perform a doping process on the electrode 120. The doping means 110 may include a doping bath 111 and a metal 113.

Here, the doping bath 111 is a bath for receiving the electrolyte 112, and may have an open upper surface. Accordingly, the electrode 120 and the metal 113 can be easily introduced into and discharged from the doping bath 111. The electrolyte 112 serves as a medium capable of moving lithium ions, and may be made of a material capable of stably presenting lithium ions without causing electrolysis at a high voltage. For example, the electrolyte 112 may include a solvent in which lithium salt is dissolved. Examples of lithium salts may be LiPF 6, LiBF 4, LiClO 4, and the like. In addition, examples of the solvent may be an aprotic organic solvent. However, in the embodiment of the present invention, the material of the electrolyte 112 is not limited.

In addition, the metal 113 may serve as a lithium ion source doped in the electrode 120. That is, the metal 113 is a material containing lithium ions, and examples of the metal material may be lithium and a lithium alloy. In this case, when the metal 113 and the electrode 120 are shorted, lithium ions may be doped into the electrode 120 due to the potential difference between the metal 113 and the electrode 120.

Here, the separator 114 may be further disposed on one surface of the metal 113 facing the electrode 120. The separator 114 may serve to prevent direct contact with the metal 113. This is because the doping process may be performed by the direct contact between the metal 113 and the electrode 120, which makes it difficult to control the doping process and the uniform doping process cannot be performed on the electrode 120. That is, the separator 114 may serve to stabilize the doping process of the electrode 120.

The switch 130 may select one of a doping process of the electrode 120 or a measurement process of measuring an open-circuit potential of the electrode 120. Here, the switch unit 130 may include a relay switch. For example, the switch 130 may include one terminal connected to the common contact 131 and the other terminal for selecting and connecting any one of the first and second contacts 132 and 133. In this case, the common contact 131 may be electrically connected to the metal 113. In addition, the first contact point 132 may be electrically connected to the electrode 120. In addition, the second contact 133 may be electrically connected to the electrode 120 via the measuring means 140.

Accordingly, the doping means 110 may perform the doping process or the measuring means 140 may selectively perform the measuring process of measuring the open circuit potential of the electrode 120 by switching the switch unit 130.

The measuring means 140 measures the open-circuit potential of the electrode 120. Here, the open circuit potential of the electrode 120 is measured by measuring the reference electrode, ie, the metal 113, immersed in the electrolyte 112 when the electrode 120 and the metal 113 are opened in the electrolyte 112. It may be a potential value of the electrode 120 measured in connection with 140. Here, the open circuit potential of the electrode 120 may vary according to the amount of doped lithium ions doped in the electrode 120. For example, as the doping amount of lithium ions on the electrode 120 increases, the open circuit potential of the electrode 120 may decrease. Accordingly, the doping level may be determined as the open circuit potential of the electrode 120 measured by the measuring means 140.

The controller 150 controls the doping process and the measuring process, and acquires information on the open circuit potential of the electrode 120 measured from the measuring means 140. Here, the controller 150 may be connected to the switch unit 130 and control the switch unit 130 according to a control command to select one of a doping process and a measuring process.

In addition, the controller 150 is connected to the measuring means 140, and applies a measuring signal for measuring the open circuit potential of the electrode 120 to the measuring means 140. In addition, the controller 150 may acquire data measured from the measuring means 140, that is, information about the open circuit potential of the electrode 120 according to the measurement signal.

In addition, the pre-doping system 100 of the electrode, the temperature control unit 150 for controlling the temperature of the doping means 110, that is, the temperature of the electrolyte 112 accommodated in the doping bath 111, in order to control the doping process speed It may further include. This is because the doping rate is influenced by the temperature of the electrolyte 112, it is possible to control the doping rate according to the temperature of the electrolyte (112).

The temperature controller 150 may be connected to the controller 150. In this case, the temperature controller 150 may control the temperature of the doping means 110 according to the temperature control command provided from the controller 150. In addition, the temperature control unit 150 provides the temperature information of the doping means 110 to the control unit 150, the control unit 150 to the temperature control unit 150 based on the information on the temperature environment of the doping means 110. A temperature control command can be generated.

In addition, the pre-doping system 100 of the electrode may further include a moving means for introducing or discharging the electrode 120 to the doping means 110. Here, the moving means may inject the metal 113 together with the electrode 120 in the doping means 110. The moving means may include a carrier for mounting and moving the electrode 120, a sliding rail for guiding the movement of the carrier, and a driving unit for moving the carrier on the sliding.

In addition, the pre-doping system 100 of the electrode may further include a display device that receives the open circuit potential of the electrode 120 from the controller 150 and outputs in real time.

The apparatus may further include an input device for inputting an operation signal for operating the pre-doping system 100 of the electrode. The input device allows the operator to manipulate the operation of the electrode's pre-doping system. Here, the input device may have the form of a touch panel installed in the display device.

Meanwhile, the electrode 120 may be a cathode of a lithium ion capacitor.

The electrode 120 may include the current collector 121 and an active material layer 122 disposed on at least one surface of the current collector 121 and capable of reversibly doping or undoping lithium ions. Here, the current collector 121 may be made of a metal mesh or a metal foil. In this case, the metal may be any one of copper and nickel, but is not limited thereto. In addition, the active material layer 122 may include a carbon material, such as graphite, capable of reversibly doping and undoping lithium ions.

In addition, the electrode 120 may further include a terminal 123 extending from one end of the current collector 121 and electrically connected to the external circuit unit. In this case, the terminal 123 may protrude by extending the current collector 121. That is, the terminal 123 may be integrally formed with the current collector 121.

Herein, when the electrode 120 is impregnated with the electrolyte 112 to perform a doping process, the terminal 123 of the electrode 120 may be exposed from the electrolyte 112. This is because if the terminal 123 is contaminated by the electrolyte 112, it may cause a poor fusion in the fusion process of the terminal 123 to form a lithium ion capacitor.

In the exemplary embodiment of the present invention, the pre-doping process of the electrode 120 is illustrated and described as being performed on one electrode 120, but is not limited thereto. The pre-doping process may be performed on a plurality of electrodes, respectively.

As in the embodiment of the present invention, when pre-doping lithium ions to the electrode 120 using the electrode pre-doping system 100, the doping level of the electrode 120 can be monitored in real time, so that the electrode ( It is possible to prevent the actual doping amount substantially doped 120) from falling short or exceeding the set doping amount. Accordingly, when manufacturing a lithium ion capacitor using a pre-doped cathode using the electrode pre-doped system 100, it is possible to improve the reliability and cycle characteristics of the lithium ion capacitor.

In addition, the pre-doping system 100 of the electrode according to an embodiment of the present invention can check the doping level of the electrode 120 in real time, thereby controlling the pre-doping process of the electrode 120. Accordingly, the pre-doping system 100 of the electrode can be easily applied to mass production through the process design.

In addition, the pre-doping system 100 of the electrode of the present invention may further include a temperature controller 150 to control the speed of the doping process.

2 is a side cross-sectional view showing a specific form of a pre-doping system of an electrode according to a first embodiment of the present invention.

3 is a top view of the pre-doped system of the electrode shown in FIG.

2 and 3, the pre-doping system 100 of the electrode according to the first embodiment of the present invention is a doping bath 111, carrier 210, sliding rail 220, drive unit 230, measurement Means 140 and switch unit 130 may be included.

The doping bath 111 accommodates the electrolyte 112 for the movement of lithium ions. The doping bath 111 may have an open upper surface. In this case, the electrode 120 and the metal 113 introduced into the doping bath 111 through the opened upper surface may be impregnated in the electrolyte 112 accommodated in the doping bath 111.

The doping bath 111 may be fixed by the frame 300 disposed outside.

The carrier 210 may serve to move the electrode 120 by mounting the electrode 120. Here, the electrode 120 may include the current collector 121 and the active material layer 122 disposed on at least one surface of the current collector 121 to reversibly do or undo lithium ions. In addition, the electrode 120 may further include a terminal 123 extending from one end of the current collector 121 and electrically connected to the external circuit unit.

The carrier 210 may move with the electrode 120 by mounting the metal 113. Here, the metal 113 is a source of lithium ions, and the metal 113 may be lithium or a lithium alloy. In addition, a separator may be provided on one surface of the metal 113 facing the electrode 120 to stabilize the doping process.

The carrier 210 may seat the active material layer 122 and the metal 113 of the electrode 120 to face each other. For example, when the electrode 120 includes the active material layers 122 on both surfaces of the current collector 121, the metal 113 may be disposed to face each side of the electrode 120.

The carrier 210 is impregnated with the electrode 120 and the metal 113 with the electrolyte 112 contained in the doping bath 111 by descending from the top of the doping bath 111 to perform the doping process of the electrode 120. You can. At this time, the terminal 123 of the electrode 120 is exposed from the electrolyte 112 to prevent the terminal 123 of the electrode 120 from being contaminated with the electrolyte 112. In addition, when the doping process of the electrode 120 is completed, the carrier 210 rises from the bottom of the doping bath 111 to the top to form the electrode 120 and the metal 113 from the electrolyte 112 accommodated in the doping bath 111. ) Can be discharged.

The sliding rail 220 is connected to the carrier 210 and is disposed outside the doping bath 111. In this case, the sliding rail 220 may be fixed by the frame 300. Here, the sliding rail 220 may serve to guide the movement of the carrier 210.

The driving unit 230 may be fixed by the frame 300 disposed outside the doping bath 112. Here, the driving unit 230 is connected to the timing belt 232 and the timing belt 232 rotating by the driving force provided by the driving motor 231 and the driving motor 231 forming the driving force to rotate the timing belt 232. It may include a lead screw 233 to raise or lower the carrier 210. In this case, the lead screw 233 and the sliding rail 220 may be fixed to the frame 300 parallel to each other and disposed outside the doping bath 112.

The measuring means 140 may be disposed outside the doping bath 112. Here, although the measuring means 140 is illustrated as being disposed outside the frame 300, it may be preferably embedded inside the frame 300.

The measuring means 140 measures the open circuit potential of the electrode 120 to confirm the doping level of the electrode 120 during the doping process of the electrode 120. Here, the measuring means 140 may stop the doping process of the electrode 120 and then proceed with the measuring process. The measuring means 140 may use the metal 113 as a reference electrode. In this case, the measuring unit 140 may be electrically connected to the metal 113 to measure the potential of the electrode 120 impregnated in the electrolyte 112.

Thereafter, when the measuring process of the measuring means 140 is completed, the electrode 120 and the metal 113 may be shorted to proceed with the doping process of the electrode 120 again. Accordingly, the doping level can be confirmed in real time by measuring the open circuit potential of the electrode 120 during the doping process of the electrode 120.

Although the switch unit 130 is illustrated as being disposed outside the frame 300, it may be buried inside the frame 300 together with the measuring means 140.

The switch unit 130 selectively connects the electrode 120, the metal 113, and the measuring means 140. That is, the switch 130 may be performed by selecting a doping process or a measuring process in the pre-doping system 100 of the electrode. Here, the switch unit 130 may be a relay switch. For example, the switch 130 may include one terminal connected to the common contact 131 and the other terminal selectively connected to any one of the first and second contacts 132 and 133. In this case, the common contact 131 is electrically connected to the metal 113. In addition, the first contact point 132 may be electrically connected to the electrode 120, and the second contact point 133 may be electrically connected to the electrode 120 via the measuring means 140. Accordingly, a doping process or a measuring process may be selected and performed by switching the switch unit 130.

In addition, the pre-doping system 100 of the electrode may further include a display device 400 that outputs the open circuit potential of the electrode 120 measured by the measuring unit 140 in real time. An operator may control the pre-doping process of the electrode 120 by monitoring the open circuit potential of the electrode 120 provided by the display device 400.

In addition, the operator may further include an input device for inputting an operation signal for operating the driving unit 230, the measuring means 140 and the switch unit 130. The input device may be a touch panel provided in the display device 400.

In addition, the display apparatus 400 may include a control unit, that is, a micro control unit (MCU), and may output a control signal for controlling the driving unit 230, the measuring unit 140, and the switch unit 130 according to an operation signal. have.

In addition, the heating means 170 may be further disposed below the doping bath 111. The heating means 170 may increase the temperature of the electrolyte solution 112 accommodated in the doping bath 111 to a predetermined temperature, thereby maximizing the doping process of the electrode 120. Here, the constant temperature may be 60 ℃, but is not limited to this in the embodiment of the present invention.

In addition, the temperature control unit 150 may be further provided to be connected to the heating means 170 to control the heating means 170. Here, the temperature controller 150 may control the heating means 170 according to the temperature control command provided from the micro control unit (MCU) to adjust the temperature of the electrolyte 112. In addition, the temperature control unit 150 provides the temperature of the electrolyte solution 112 to the MCU. In this case, the MCU may issue a temperature control command to the temperature controller 150 based on the information on the temperature environment of the electrolyte. Accordingly, the doping process speed of the electrode 120 may be adjusted according to the doping level of the electrode 120, thereby increasing production efficiency of the electrode 120.

Hereinafter, the pre-doping process of the electrode according to the embodiment of the present invention will be described in detail with reference to FIG. 4.

4 is a process flowchart of a pre-doping process of an electrode according to a third embodiment of the present invention.

Referring to FIG. 4, in order to proceed with the pre-doping process of the electrode according to the third exemplary embodiment of the present invention, first, it is determined whether the temperature of the electrolyte is a temperature set so as to proceed with the pre-doping process efficiently. Here, the set temperature of the electrolyte may be 60 ℃, but not limited to this in the embodiment of the present invention, the set temperature of the electrolyte is a process factor of the pre-doping process of the electrode, such as the shape of the electrode, the doping level of the electrode and the electrolyte It may be changed depending on the type of (S10).

Here, when the temperature of the electrolyte does not reach the set temperature, the temperature of the electrolyte is adjusted. In this case, the temperature of the electrolyte may be controlled by heating means disposed under the doping bath containing the electrolyte. (S11) After the temperature of the electrolyte is adjusted by the heating means, the temperature of the electrolyte is again set to the set temperature. It is determined whether it has reached (S10).

When the temperature of the electrolyte reaches the set temperature, the metal and the electrode are impregnated with the electrolyte. Here, the metal contains lithium ions and serves as a source of lithium ions. At this time, the active material layers of the metal and the electrode are arranged to face each other.

The electrode and the metal impregnated with the electrolyte are shorted. Due to the potential difference between the metal and the electrode, lithium ions of the metal may be doped into the electrode. A process of doping lithium ions to the electrode is performed.

After the doping process, that is, the short of the metal and the electrode is maintained until the set time (S40), the metal and the electrode are opened. As the metal and the electrode are opened, the doping process of the electrode may be stopped (S50).

After opening the metal and the electrode, the open circuit potential of the electrode is measured. Here, the open circuit potential of the electrode can be measured using a metal as a reference electrode. At this time, the open circuit potential of the electrode can be reduced according to the amount of doping of the electrode. That is, the doping level of the electrode can be determined by measuring the open circuit potential of the electrode. (S60)

After measuring the open circuit potential of the electrode, it is determined whether the open circuit potential of the electrode matches the set open circuit potential.

Here, when the open circuit potential of the electrode does not reach the set open circuit potential, shorting the electrode and the metal (S30), maintaining a short time between the electrode and the metal (S40), and opening the electrode and the metal Step S50 and step S60 of measuring the open circuit potential of the electrode are repeated.

When the open-circuit potential of the electrode reaches the set open-circuit potential, the electrode is discharged from the electrolyte (S80), whereby the pre-doping step of the electrode can be completed. In this case, the metal may be discharged from the electrolyte together with the electrode.

Thus, as in the embodiment of the present invention, the pre-doping process of the electrode can determine the doping level of the electrode in real time during the doping process by measuring the open circuit potential of the electrode.

100 pre-doping system of the electrode 110 doping means
111: doping bath 112: electrolyte
113: metal 114: separator
120 electrode 130 switch unit
140: measuring means 150: control unit
160: temperature control unit 170: heating means
210: carrier 220: sliding rail
230: drive unit 300: frame
400: display device

Claims (23)

Doping means for performing a doping process for doping lithium ions to the electrode;
Measuring means for performing a measuring step of measuring an open-circuit potential of the electrode;
A switch unit for selecting and performing any one of the doping process and the measuring process;
A control unit which controls the doping means, the measuring means, and the switch unit, and acquires an open circuit potential of the electrode measured from the measuring means;
Including;
The switch unit may include one side terminal connected to a common contact electrically connected to a source of lithium ions; And a second terminal selectively connected to a first contact electrically connected to the electrode or to a second contact electrically connected to the electrode via the measurement means.
The method of claim 1,
The doping means
A doping bath accommodating an electrolyte impregnating the electrode; And
A metal impregnated in the electrolyte together with the electrode to supply the lithium ions;
Pre-doping system of the electrode comprising a.
The method of claim 2,
And a separator provided on one surface of the metal facing the electrode.
delete The method of claim 1,
And the electrode is disposed on at least one surface of the current collector and the current collector and includes an active material layer reversibly doping and dedoping the lithium ions.
The method of claim 1,
And a temperature controller for controlling the temperature of the doping means.
The method according to claim 6,
And a heating means for heating the doping means by the temperature control part.
The method of claim 1,
And a moving means for inputting and discharging the electrode and the lithium ion source to the doping means.
The method of claim 8,
The means for moving,
A carrier for seating and moving the electrode and the source of lithium ions;
A sliding rail for guiding the movement of the carrier; And
A driving unit for moving the carrier on the sliding rail;
Pre-doping system of the electrode comprising a.
The method of claim 1,
Wherein said source of lithium ions comprises a metal containing lithium ions disposed opposite said electrode.
A doping bath containing an electrolyte solution;
A carrier for impregnating or discharging the electrode and the metal in the electrolyte solution contained in the doping bath;
A sliding rail for guiding the movement of the carrier;
A driving unit for moving the carrier on the sliding rail;
Measuring means for measuring an open circuit potential of the electrode; And
A switch unit for selectively connecting the electrode, the metal and the measuring means;
Pre-doping system of the electrode comprising a.
The method of claim 11,
The switch unit
One terminal connected to a common contact electrically connected to the metal; And
A second terminal selectively connected to a first contact electrically connected to the electrode or a second contact electrically connected to the electrode via the measuring means;
Pre-doping system of the electrode comprising a.
The method of claim 11,
The driving unit
A driving motor generating a driving force;
A timing belt rotating by the driving force;
A lead screw moving the carrier by rotation of the timing belt;
Pre-doping system of the electrode comprising a.
The method of claim 11,
And a heating means disposed under the doping bath to adjust the temperature of the electrolyte.
The method of claim 11,
And a display device for outputting the open circuit potential of the electrode in real time.
The method of claim 15,
The display device further comprises an input device for inputting an operation signal for operating the drive unit, the measuring means, and the switch unit.
17. The method of claim 16,
And the input device comprises a touch panel.
The method of claim 11,
And a separator provided on one surface of the metal facing the electrode.
The method of claim 11,
And a terminal of the electrode is exposed from the electrolyte solution.
The method of claim 11,
And the electrode is disposed on at least one surface of the current collector and the current collector and includes an active material layer reversibly doping and dedoping lithium ions.
Impregnating the metal and the electrode in the electrolyte;
Doping lithium ions from the metal to the electrode;
Measuring an open circuit potential of the electrode; And
Repeatedly doping lithium ions into the electrode and measuring the open circuit potential of the electrode until the open circuit potential of the electrode reaches a set value;
Pre-doping method of the electrode comprising a.
The method of claim 21,
Measuring the open circuit potential of the electrode is a pre-doping method of the electrode is measured after stopping the doping process of the electrode.
The method of claim 21,
Prior to the doping process of the electrode
The method of pre-doping the electrode further comprising the step of adjusting the temperature of the electrolyte.

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