CN206671248U - A kind of electrochemical testing device - Google Patents

Abstract

The utility model discloses an electrochemical test device, which comprises a bracket, a base, a test pool, a top plate and a sample seat, the test pool is fixed on the base through a bracket, the top plate is sealed and arranged on the top of the test pool, and the An auxiliary electrode and a reference electrode are arranged on the top plate, an opening is arranged on one side of the test pool, the sample seat is arranged inside the test pool, and a The flexible insulating sleeve forms a closed test chamber among the test pool, the top plate, the sample base and the flexible insulating sleeve. The sample base is connected to a screw through a connecting rod, and the screw is threaded to the opening. The utility model is simple in structure, easy to use, and can adjust the distance between the electrodes to ensure the accuracy of the measured value, and the contact area between the electrode sheet to be tested and the electrolyte can be fixed, and no special processing is required for the electrode sheet to be tested. Experiments were repeated several times.

Description

An electrochemical test device

technical field

The utility model relates to the technical field of electrochemical testing, in particular to an electrochemical testing device.

Background technique

Electrochemistry is the science that studies the phenomena of charged interfaces formed by two types of conductors and the changes that occur on them. Now it has formed many branches such as synthetic electrochemistry, quantum electrochemistry, semiconductor electrochemistry, organic conductor electrochemistry, spectroelectrochemistry, bioelectrochemistry and so on. Electrochemistry has been widely used in chemical industry, metallurgy, machinery, electronics, aviation, aerospace, light industry, instrumentation, medicine, materials, energy, metal corrosion and protection, environmental science and other scientific and technological fields. The current research topics that are of great concern in the world, such as energy, materials, environmental protection, life sciences, etc., are related to electrochemistry in various ways.

In fields involving electrochemical research such as energy, materials, and chemical engineering, it is often necessary to test the electrochemical properties of the prepared materials, so as to analyze the electrochemical properties or characteristics of the materials. In order to ensure the repeatability and accuracy of the experimental results as much as possible in the electrochemical test, the requirements for the experimental conditions are very strict. The distance between the working electrode and the reference electrode is more stringent. However, in the existing three-electrode system, the distance between two electrodes is generally controlled by visual inspection, and most devices can only place electrodes without providing a fixed function; If the distance between the electrodes changes during the electrochemical test, the resistance of the electrolyte will change, which will inevitably affect the accuracy of the measured value, and the data will lose comparability. The contact area is also difficult to fix, and it is inconvenient to collect the amount of gas evolution during the gas evolution potential test.

Utility model content

The utility model aims to solve one of the technical problems in the related art at least to a certain extent. For this reason, an object of this utility model is to propose a kind of electrochemical test device, simple in structure, easy to use, can adjust the distance between the electrodes, guarantee the accuracy of the measured value, and the contact between the electrode sheet and the electrolyte to be tested The area can be fixed, no special processing is required for the electrode sheet to be tested, and the experiment can be repeated many times.

A kind of electrochemical test device according to the embodiment of the present utility model, comprises support, base, test cell, top plate and sample seat, described test cell is fixed on the base by support, and described top plate is sealed and arranged on the top of test cell, An auxiliary electrode and a reference electrode are arranged on the top plate, an opening is provided on one side of the test pool, the sample seat is arranged inside the test pool and between the edge of the sample seat and the inner side wall of the opening of the test pool A flexible insulating sleeve is provided, and a closed test cavity is formed between the test pool, the top plate, the sample holder and the flexible insulating sleeve, and the sample holder is connected to the screw through a connecting rod, and the screw is connected to the opening by threads , one end of the screw rod outside the test pool is connected with the handle.

Further, the sample holder includes a base plate and a cover plate, a through hole is provided in the middle of the base plate, the edge of the base plate is connected with a flexible insulating sleeve, and a sample groove is provided in the middle of the cover plate close to the base plate , the cover plate is tightly pressed against the bottom plate by a fixing device.

Further, a sealing pad is provided between the bottom plate and the cover plate, and a hole corresponding to the through hole on the bottom plate is provided in the middle of the sealing pad, and the fixing device uses screws to connect the cover plate and the sealing pad. A pad is fastened to the base plate.

Further, the auxiliary electrode is arranged directly opposite to the sample holder, and the reference electrode is arranged above the sample holder.

Further, the screw rod is provided with a length scale groove.

Further, the top plate is also provided with an air inlet pipe and an air outlet pipe, the bottom end of the air inlet pipe extends into the bottom of the test pool, the gas collection end of the air outlet pipe is arranged on the top of the test pool, and the gas collection The ends are conical.

Further, a liquid outlet pipe is provided at the bottom of the test pool.

In the utility model, the sample seat is arranged inside the test pool and a flexible insulating sleeve is arranged between the edge of the sample seat and the inner side wall of the opening of the test pool, and the test pool, the cover plate, the sample seat and the flexible insulating sleeve A closed test chamber is formed, and the position between the sample holder and the auxiliary electrode can be adjusted by rotating the screw. The structure is simple and easy to use. The distance between the electrodes can be adjusted to ensure the accuracy of the measured value. Through holes, the contact area between the test electrode sheet and the electrolyte is the area of the through hole, the contact area between the electrode sheet to be tested and the electrolyte solution can be fixed, no special processing is required for the electrode sheet to be tested, and the experiment can be repeated many times, and It can be ventilated or collected for further test analysis, thus ensuring the accuracy of the experimental data and making the test results more realistic.

Description of drawings

The accompanying drawings are used to provide a further understanding of the utility model, and constitute a part of the description, and are used to explain the utility model together with the embodiments of the utility model, and do not constitute a limitation to the utility model. In the attached picture:

Fig. 1 is the structural representation of a kind of electrochemical testing device that the utility model proposes;

Figure 2 is a schematic diagram of the structure of the sample holder.

In the figure: 1-support, 2-base, 3-test pool, 4-top plate, 5-sample holder, 6-auxiliary electrode, 7-reference electrode, 8-flexible insulating sleeve, 9-screw, 10-handle , 11-base plate, 12-cover plate, 13-through hole, 14-sealing gasket, 15-screw, 16-length scale groove, 17-inlet pipe, 18-outlet pipe, 19-outlet pipe, sample 20.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example.

Examples of the described embodiments are shown in the drawings, wherein like or similar reference numerals designate like or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention, but should not be construed as limiting the present invention.

In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", "Axial" The orientation or positional relationship indicated by , "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying the referred device Or elements must have a specific orientation, be constructed and operate in a specific orientation, and thus should not be construed as limiting the invention.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present utility model, "plurality" means two or more, unless otherwise specifically defined.

In this utility model, unless otherwise specified and limited, terms such as "installation", "connection", "connection" and "fixation" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connection, or integration; it can be mechanical connection or electrical connection; it can be direct connection or indirect connection through an intermediary, and it can be the internal communication of two components or the interaction relationship between two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model according to specific situations.

Referring to Figure 1-2, an electrochemical test device, its structure includes: bracket 1, base 2, test pool 3, top plate 4, sample holder 5, auxiliary electrode 6, reference electrode 7, flexible insulating sleeve 8, Screw rod 9, handle 10, base plate 11, cover plate 12, through hole 13, gasket 14, screw 15, length scale groove 16, air inlet pipe 17, air outlet pipe 18, liquid outlet pipe 19. The bracket 1, the base 2, and the top plate 4 are all made of polytetrafluoroethylene. The reference electrode 7 is fixed in the test cell 3 with a rubber plug. The electrode is a saturated calomel electrode, which effectively ensures the accuracy of the test data. The flexible insulating sleeve 8 The flexible and good insulating and corrosion-resistant material has no effect on the electrochemical test. The test cell 3 is fixed on the base 2 through the bracket 1. The top plate 4 is sealed and arranged on the top of the test cell 3. The top plate 4 is provided with an auxiliary electrode 6 and a reference electrode. Compared with the electrode 7, one side of the test pool 3 is provided with an opening, the sample seat 5 is arranged inside the test pool 3 and a flexible insulating sleeve 8 is arranged between the edge of the sample seat 5 and the inner sidewall of the test pool 3 opening, and the test A closed test cavity is formed between the pool 3, the top plate 4, the sample seat 5 and the flexible insulating sleeve 8, the sample seat 5 is connected to the screw 9 through a connecting rod, the screw 9 is connected to the opening by threads, and the screw 9 is located outside the test pool One end is connected with the handle 10.

In this embodiment, the sample holder 5 includes a base plate 11 and a cover plate 12. A through hole 13 is provided in the middle of the base plate 11. The edge of the base plate 11 is connected to the flexible insulating sleeve 8. The middle part of the side of the cover plate 12 close to the base plate 11 is provided with a In the sample tank, the cover plate 12 is tightly pressed against the base plate 11 by a fixing device. A gasket 14 is provided between the base plate 11 and the cover plate 12. The middle part of the gasket 14 is provided with a hole corresponding to the through hole 13 on the base plate 11. The device uses screws 15 to fasten the cover plate 12 and the gasket 14 to the bottom plate 11 to prevent liquid leakage. The auxiliary electrode 6 is arranged directly opposite the sample holder 5, the reference electrode 7 is arranged above the sample holder 5, and the screw 9 is provided with a length scale groove 16, and the top plate 4 is also provided with an air inlet pipe 17 and an air outlet pipe 18. The bottom end of the air inlet pipe 17 extends into the bottom of the test pool 3, and the gas collection end of the air outlet pipe 18 is arranged in the test pool. 3, the gas collection end is conical, and the bottom of the test pool 3 is provided with a liquid outlet pipe 19.

In the technical scheme of the utility model, the sample seat 5 is arranged inside the test pool 3 and a flexible insulating sleeve 8 is arranged between the edge of the sample seat 5 and the inner sidewall of the test pool 3 opening, the test pool 3, the top plate 4, A closed test cavity is formed between the sample holder 5 and the flexible insulating sleeve 8, the position between the sample holder 5 and the auxiliary electrode 6 can be adjusted by rotating the screw 9, and the distance can be read through the length scale groove 16. The structure is simple and easy to use. Convenient, the distance between the electrodes can be adjusted to ensure the accuracy of the measured value. The middle part of the bottom plate 11 is provided with a through hole 13. The contact area between the sample 20 and the electrolyte is the area of the through hole 13. The sample 20 and the electrolytic The contact area of the liquid can be fixed, no special processing is required for the sample 20, the experiment can be repeated many times, and further test and analysis can be carried out by aeration or collection, thus ensuring the accuracy of the experimental data and making the test results more realistic After the test is completed, release the electrolyte through the liquid outlet 19, unscrew the screw, loosen the screw 15 on the sample holder 5, separate the cover plate 12 from the bottom plate 11, and take out the sample 20.

In the present invention, unless otherwise clearly specified and limited, the first feature may be in direct contact with the first feature or the first feature and the second feature through an intermediary indirect contact. Moreover, "above", "above" and "above" the first feature on the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. "Below", "beneath" and "beneath" the first feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is less horizontally than the second feature.

In the description of this specification, descriptions referring to the terms "one embodiment", "some embodiments", "example", "specific examples", or "some examples" mean that specific features described in connection with the embodiment or example , structures, materials or features are included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above is only a preferred embodiment of the utility model, but the scope of protection of the utility model is not limited thereto. Any equivalent replacement or change of the new technical solution and the concept of the utility model shall be covered by the protection scope of the utility model.

Claims (7)

1. an electrochemical testing device, is characterized in that: comprise support, base, test cell, top plate and sample seat, described test cell is fixed on the base by support, and described top plate seal is arranged on the top of test cell, so An auxiliary electrode and a reference electrode are arranged on the top plate, an opening is arranged on one side of the test pool, the sample seat is arranged inside the test pool, and an inner side wall of the opening of the test pool is provided between the edge of the sample seat and There is a flexible insulating sleeve, and a closed test cavity is formed between the test pool, the top plate, the sample holder and the flexible insulating sleeve, the sample holder is connected to the screw through a connecting rod, and the screw is connected to the opening by threads, One end of the screw rod outside the test pool is connected with the handle. 2. A kind of electrochemical test device according to claim 1, it is characterized in that: described sample seat comprises base plate, cover plate, and the middle part of described base plate is provided with through hole, and the edge of described base plate and flexible insulating sleeve connected, the middle part of one side of the cover plate close to the bottom plate is provided with a sample groove, and the cover plate is tightly pressed against the bottom plate by a fixing device. 3. A kind of electrochemical test device according to claim 2, characterized in that: a sealing gasket is provided between the base plate and the cover plate, and the middle part of the sealing gasket is provided with a hole corresponding to the through hole on the base plate. holes, and the fixing device fastens the cover plate and the gasket to the bottom plate with screws. 4. An electrochemical testing device according to claim 1, characterized in that: the auxiliary electrode is arranged directly opposite to the sample holder, and the reference electrode is arranged above the sample holder. 5. An electrochemical test device according to claim 1, characterized in that: said screw rod is provided with a length scale groove. 6. a kind of electrochemical testing device according to claim 1, is characterized in that: also be provided with air inlet pipe and air outlet pipe on the described top plate, the bottom end of described air inlet pipe stretches into the bottom in the test pool, described The gas collection end of the gas outlet pipe is arranged on the top of the test cell, and the gas collection end is conical. 7. An electrochemical test device according to claim 1, characterized in that: a liquid outlet pipe is provided at the bottom of the test cell.