CN107121479A - A kind of electro-chemical systems - Google Patents
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Abstract
本发明提供了一种电化学系统，包括：一个电极，所述电极的一端和电源正极相连，所述电极的另一端和电源负极相连；电解液，所述电解液与电极具有接触面；所述接触面位于电极的两端之间。与现有技术相比，本发明提供的电化学系统只有一个电极，电解液与电极具有接触面，电极具有电阻，电流通过电极时，与电解液接触的两侧电极产生压降从而具有不同的电势，一侧形成阴极，另一侧形成阳极，构成电化学系统。本发明提供的电化学系统只有一个电极，结构简单，操作方便。
The invention provides an electrochemical system, comprising: an electrode, one end of the electrode is connected to the positive pole of the power supply, and the other end of the electrode is connected to the negative pole of the power supply; an electrolyte, the electrolyte and the electrode have a contact surface; The contact surface is located between the two ends of the electrode. Compared with the prior art, the electrochemical system provided by the present invention has only one electrode, the electrolyte and the electrode have a contact surface, and the electrode has a resistance. Potential, one side forms the cathode, and the other side forms the anode, forming an electrochemical system. The electrochemical system provided by the invention has only one electrode, and has simple structure and convenient operation.
Description
技术领域technical field
本发明涉及电化学技术领域，尤其涉及一种电化学系统。The invention relates to the field of electrochemical technology, in particular to an electrochemical system.
背景技术Background technique
电化学反应是一种特殊的化学反应，这种化学反应让电流通过阳极与阴极之间的电解液来驱动。电化学系统用于电化学反应，包括浸没在电解液中的一些阴、阳电极，并且由外部电源产生流过这些电极之间的电流。现有技术中电化学系统通常包括三种类型：1)含有工作电极、辅助电极和参比电极的三电极电化学系统；2)含有工作电极和辅助电极的两电极电化学系统；3)含有两个驱动电极和双极电极的电化学系统。现有技术提供的电化学系统在用于多样品电化学实验时，还需使用更多的电极。可以看出，现有技术中的电化学系统结构复杂，操作不便。An electrochemical reaction is a specific chemical reaction in which an electric current is driven through an electrolyte between an anode and a cathode. The electrochemical system is used for electrochemical reactions, including some negative and positive electrodes immersed in the electrolyte, and an electric current flowing between these electrodes is generated by an external power source. Electrochemical systems in the prior art generally include three types: 1) a three-electrode electrochemical system containing a working electrode, an auxiliary electrode, and a reference electrode; 2) a two-electrode electrochemical system containing a working electrode and an auxiliary electrode; 3) a three-electrode electrochemical system containing a working electrode and an auxiliary electrode; Electrochemical system with two driven electrodes and bipolar electrodes. When the electrochemical system provided by the prior art is used for multi-sample electrochemical experiments, more electrodes are required. It can be seen that the electrochemical system in the prior art has a complex structure and is inconvenient to operate.
发明内容Contents of the invention
有鉴于此，本发明的目的在于提供一种电化学系统，本发明提供的电化学系统结构简单，操作方便。In view of this, the object of the present invention is to provide an electrochemical system. The electrochemical system provided by the present invention has a simple structure and is easy to operate.
本发明提供了一种电化学系统，包括：The invention provides an electrochemical system, comprising:
一个电极，所述电极的一端和电源正极相连，所述电极的另一端和电源负极相连；An electrode, one end of the electrode is connected to the positive pole of the power supply, and the other end of the electrode is connected to the negative pole of the power supply;
电解液，所述电解液与电极具有接触面；an electrolyte solution having a contact surface with the electrode;
所述接触面位于电极的两端之间。The contact surface is located between the two ends of the electrode.
优选的，所述接触面为一个或者多个接触面。Preferably, the contact surface is one or more contact surfaces.
优选的，所述多个接触面之间互不相连。Preferably, the plurality of contact surfaces are not connected to each other.
优选的，所述电极表面设置有凹槽；Preferably, the electrode surface is provided with grooves;
所述电解液置于凹槽中，与电极形成接触面。The electrolyte is placed in the groove and forms a contact surface with the electrodes.
优选的，所述凹槽为多个互不连通的凹槽。Preferably, the grooves are multiple grooves that are not connected to each other.
优选的，所述电化学系统还包括上下开口的筒体；Preferably, the electrochemical system further includes a cylinder with upper and lower openings;
所述上下开口的筒体固定在电极表面，与电极表面形成用于盛放电解液的容器；The cylinder with upper and lower openings is fixed on the surface of the electrode, and forms a container for holding the electrolyte with the surface of the electrode;
所述电解液置于筒体中，与电极形成接触面。The electrolyte solution is placed in the barrel and forms a contact surface with the electrodes.
优选的，所述上下开口的筒体为多个互不连通的上下开口的筒体。Preferably, the cylinder with upper and lower openings is a plurality of cylinders with upper and lower openings that are not connected to each other.
优选的，所述上下开口的筒体的材质为绝缘材料。Preferably, the cylinder with upper and lower openings is made of insulating material.
优选的，所述电极选自导电玻璃电极、碳膜电极、金属膜电极或导电聚合物电极。Preferably, the electrodes are selected from conductive glass electrodes, carbon film electrodes, metal film electrodes or conductive polymer electrodes.
优选的，所述电解液选自电化学发光实验所用的溶液、电聚合实验所用的溶液或电镀实验所用的镀液。Preferably, the electrolyte solution is selected from the solution used in electrochemiluminescence experiments, the solution used in electropolymerization experiments or the plating solution used in electroplating experiments.
与现有技术相比，本发明提供的电化学系统只有一个电极，电解液与电极具有接触面，电极具有电阻，电流通过电极时，与电解液接触的两侧电极产生压降从而具有不同的电势，一侧形成阴极，另一侧形成阳极，构成电化学系统。本发明提供的电化学系统只有一个电极，结构简单，操作方便。Compared with the prior art, the electrochemical system provided by the present invention has only one electrode, the electrolyte and the electrode have a contact surface, and the electrode has a resistance. Potential, one side forms the cathode, and the other side forms the anode, forming an electrochemical system. The electrochemical system provided by the invention has only one electrode, simple structure and convenient operation.
附图说明Description of drawings
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据提供的附图获得其他的附图。In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only It is an embodiment of the present invention, and those skilled in the art can also obtain other drawings according to the provided drawings without creative work.
图1为本发明实施例提供的电化学系统的结构示意图；Fig. 1 is the structural representation of the electrochemical system provided by the embodiment of the present invention;
图2为本发明实施例提供的电化学系统的结构示意图；Fig. 2 is the structural representation of the electrochemical system provided by the embodiment of the present invention;
图3为本发明实施例1提供的电化学系统性能检测结果；Fig. 3 is the performance detection result of the electrochemical system provided by Example 1 of the present invention;
图4为本发明实施例2提供的电化学系统性能检测结果。Fig. 4 is the performance test result of the electrochemical system provided by Example 2 of the present invention.
具体实施方式detailed description
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
本发明提供了一种电化学系统，包括：The invention provides an electrochemical system, comprising:
一个电极，所述电极的一端和电源正极相连，所述电极的另一端和电源负极相连；An electrode, one end of the electrode is connected to the positive pole of the power supply, and the other end of the electrode is connected to the negative pole of the power supply;
电解液，所述电解液与电极具有接触面；an electrolyte solution having a contact surface with the electrode;
所述接触面位于电极的两端之间。The contact surface is located between the two ends of the electrode.
本发明提供的电化学系统中只含有一个电极。本发明对所述电极的电阻大小没有特殊的限制，本领域技术人员可根据实际电化学实验条件选择合适电阻的电极。在本发明中，所述电极优选为具有较大电阻的电极，电极电阻较大，电流通过电极后产生的压降更为明显，使电化学系统的效果更好。在本发明中，所述电极的电阻可以为10～10000Ω，优选为100～9000Ω，更优选为500～8000Ω，更优选为1000～6000Ω，最优选为3000～4000Ω。本发明对所述电极的种类没有特殊的限制，采用本领域技术人员熟知的可用于电化学实验或者电化学系统的电极即可。在本发明中，所述电极可以为导电玻璃电极、碳膜电极、金属薄膜电极或导电聚合物电极等。在本发明中，所述电极也可以为丝网印刷电极或者复合电极等。本发明对所述电极的形状和尺寸没有特殊的限制，本领域技术人员可根据实际情况选择不同形状和尺寸的电极。在本发明中，所述电极的形状优选为矩形、圆形等。在本发明中，所述电极优选为FTO导电玻璃(掺杂氟的SnO2透明导电玻璃(SnO2：F)，简称为FTO)或者ITO导电玻璃。本发明对所述电极的来源没有特殊的限制，可由市场购买获得。The electrochemical system provided by the invention contains only one electrode. The present invention has no special limitation on the resistance of the electrodes, and those skilled in the art can select electrodes with appropriate resistance according to actual electrochemical experiment conditions. In the present invention, the electrode is preferably an electrode with a relatively large resistance, and the electrode resistance is relatively large, and the voltage drop generated after the current passes through the electrode is more obvious, so that the effect of the electrochemical system is better. In the present invention, the resistance of the electrode may be 10-10000Ω, preferably 100-9000Ω, more preferably 500-8000Ω, more preferably 1000-6000Ω, most preferably 3000-4000Ω. In the present invention, there is no special limitation on the type of the electrodes, and electrodes known to those skilled in the art that can be used in electrochemical experiments or electrochemical systems can be used. In the present invention, the electrode may be a conductive glass electrode, a carbon film electrode, a metal thin film electrode or a conductive polymer electrode and the like. In the present invention, the electrodes may also be screen-printed electrodes or composite electrodes. The present invention has no special limitation on the shape and size of the electrodes, and those skilled in the art can choose electrodes of different shapes and sizes according to actual conditions. In the present invention, the shape of the electrodes is preferably rectangular, circular or the like. In the present invention, the electrode is preferably FTO conductive glass (fluorine-doped SnO 2 transparent conductive glass (SnO 2 : F), referred to as FTO) or ITO conductive glass. The present invention has no special limitation on the source of the electrodes, which can be purchased from the market.
在本发明中，所述电极的一端和电源的正极相连，电极的另一端和电源的负极相连，本发明中电极的任意一端都可以与电源正极相连，当一端与电源正极相连后，另一端就与电源负极相连，本发明对此并没有特殊的限制。本发明对电源与电极连接的具体位置并没有特殊的限制，电源可以连接在电极上的任意位置，如可以在电极头部，也可以在电极的尾部，还可以在电极中部。本发明将电极与电源正极连接的位置定义为电极的一端，将电极与电源负极连接的位置定义为电极的另一端。本发明对电源和电极连接的方式没有特殊的限制，电源可以直接与电极连接，也可以通过导电介质与电极连接。本发明对所述导电介质没有特殊的限制，本领域技术人员可根据实际情况选择合适的导体将电源与电极连接，如可采用导线。In the present invention, one end of the electrode is connected to the positive pole of the power supply, and the other end of the electrode is connected to the negative pole of the power supply. Any end of the electrode in the present invention can be connected to the positive pole of the power supply. When one end is connected to the positive pole of the power supply, the other end It is connected to the negative pole of the power supply, and the present invention has no special limitation on this. The present invention has no special limitation on the specific position where the power supply is connected to the electrode. The power supply can be connected to any position on the electrode, such as at the head of the electrode, at the tail of the electrode, or in the middle of the electrode. In the present invention, the position where the electrode is connected to the positive pole of the power supply is defined as one end of the electrode, and the position where the electrode is connected to the negative pole of the power supply is defined as the other end of the electrode. The present invention has no special limitation on the way of connecting the power supply and the electrodes. The power supply can be directly connected to the electrodes, or can be connected to the electrodes through a conductive medium. The present invention has no special limitation on the conductive medium, and those skilled in the art can select a suitable conductor to connect the power source and the electrodes according to the actual situation, such as wires.
本发明对所述电源的种类没有特殊的限制，本领域技术人员可根据实际需要选择合适类型和电压的电源，如交流电源或直流电源等。本发明对所述电源的来源没有特殊的限制，可由市场购买获得。The present invention has no special limitation on the type of the power supply, and those skilled in the art can select a power supply of a suitable type and voltage, such as an AC power supply or a DC power supply, according to actual needs. The present invention has no special limitation on the source of the power supply, which can be purchased from the market.
本发明提供的电化学系统包括电解液，电解液与电极具有接触面，接触面位于电极的两端之间。在本发明中，所述电解液与电极的接触面可以为一个接触面，也可以为多个接触面。在本发明中，所述接触面为多个接触面时优选为互不连接的多个接触面，互不连接的多个接触面之间是相互独立的。在本发明中，所述接触面为一个接触面时可以进行一种电化学实验，电解液为这种电化学实验所需的原料或试剂。The electrochemical system provided by the present invention includes electrolyte, which has a contact surface with the electrode, and the contact surface is located between the two ends of the electrode. In the present invention, the contact surface between the electrolyte solution and the electrode may be one contact surface or multiple contact surfaces. In the present invention, when the contact surface is a plurality of contact surfaces, it is preferably a plurality of contact surfaces that are not connected to each other, and the plurality of contact surfaces that are not connected to each other are independent of each other. In the present invention, when the contact surface is a contact surface, an electrochemical experiment can be performed, and the electrolyte is a raw material or reagent required for the electrochemical experiment.
在本发明中，所述接触面为互不相连的多个接触面时可以同时进行不同的电化学实验，由于多个接触面互不连通，在每个接触面上可以为不同的电解液，由于互不相连，不同的电解液不会混合到一起，这样就可以同时进行不同的电化学实验；当然，在这种情况下不同的接触面上也可以为同种电解液，这样也可以实现上述同时进行同种电化学实验的多次测试。In the present invention, when the contact surfaces are multiple contact surfaces that are not connected to each other, different electrochemical experiments can be carried out at the same time. Since the multiple contact surfaces are not connected to each other, different electrolytes can be used on each contact surface. Because they are not connected to each other, different electrolytes will not mix together, so that different electrochemical experiments can be carried out at the same time; of course, in this case, different contact surfaces can also be the same electrolyte, which can also achieve The above-mentioned multiple tests of the same electrochemical experiment were carried out at the same time.
本发明对电解液与电极形成接触面的方式没有特殊的限制，本领域技术人员可根据实际情况进行操作，保证电解液与电极具有接触面即可。在本发明中，可以将电解液喷洒或涂刷在电极表面形成接触面。The present invention has no special restrictions on the way the electrolyte and the electrode form the contact surface, and those skilled in the art can operate according to the actual situation, as long as the electrolyte and the electrode have a contact surface. In the present invention, the electrolyte can be sprayed or painted on the electrode surface to form a contact surface.
在本发明中，也可以将电极表面在厚度方向上去除一些材料，形成各种形状的凹槽，将电解液置于凹槽中，使电解液和电极形成接触面。本发明对所述凹槽的形状和尺寸没有特殊的限制，本领域技术人员可根据实际需要进行设计。本发明对所述凹槽的个数没有特殊的限制，可以为一个或多个凹槽，当为多个凹槽时，各个凹槽之间优选不连通。在本发明中，可以在每个凹槽内置入相同的电解液，这样可以实现同时进行一种电化学反应的多次测试；也可以在每个凹槽内置入不同的电解液，这样可以实现同时进行多个不同的电化学实验。本发明优选设置多个互不连通的凹槽，在不同的凹槽中置入不同的电解液，以同时进行多种电化学实验。In the present invention, it is also possible to remove some material from the surface of the electrode in the thickness direction to form grooves of various shapes, and place the electrolyte in the groove so that the electrolyte and the electrode form a contact surface. The present invention has no special limitation on the shape and size of the groove, and those skilled in the art can design it according to actual needs. The present invention has no special limitation on the number of the grooves, and may be one or more grooves. When there are multiple grooves, the grooves are preferably not connected. In the present invention, the same electrolyte can be embedded in each groove, so that multiple tests of an electrochemical reaction can be carried out at the same time; different electrolytes can also be embedded in each groove, so that Multiple different electrochemical experiments can be performed simultaneously. In the present invention, multiple grooves that are not connected to each other are preferably arranged, and different electrolyte solutions are placed in different grooves, so that various electrochemical experiments can be performed simultaneously.
在本发明中，所述电极和电解液的接触面也可通过其他方式形成，如在电极表面固定一个上下开口的筒体，筒体与电极表面形成一个可盛放电解液的空间，因为筒体下端开口与电极表面接触，将电解液置于筒体中电解液也能够与电极表面接触，形成接触面。本发明对所述上下开口的筒体的个数没有特殊的限制，可以为一个也可以为多个，当为多个时，多个上下开口的筒体之间不连通。在本发明中，当为多个上下开口的筒体时，这些筒体可以是单独分开的，每个筒体单独固定在电极表面。在本发明中，所述筒体为单个筒体时一次只能进行一种电化学实验。在本发明中，所述筒体为多个筒体时，能实现同时进行一种电化学实验的多个测试；还可以同时进行不同的电化学实验；原理与上述技术方案所述的凹槽情况类似，在此不再赘述。In the present invention, the contact surface between the electrode and the electrolyte can also be formed in other ways, such as fixing a cylinder with upper and lower openings on the surface of the electrode, and the cylinder and the surface of the electrode form a space that can hold the electrolyte, because the cylinder The opening at the lower end of the body is in contact with the surface of the electrode, and the electrolyte solution can also contact the surface of the electrode when the electrolyte is placed in the cylinder to form a contact surface. In the present invention, there is no special limitation on the number of the cylinders with upper and lower openings, and there may be one or more cylinders. When there are multiple cylinders, the cylinders with upper and lower openings are not connected. In the present invention, when there are multiple cylinders with upper and lower openings, these cylinders can be separated separately, and each cylinder is individually fixed on the surface of the electrode. In the present invention, when the cylinder is a single cylinder, only one electrochemical experiment can be performed at a time. In the present invention, when the cylinder is a plurality of cylinders, multiple tests of one electrochemical experiment can be carried out at the same time; different electrochemical experiments can also be carried out at the same time; the principle is the same as the groove described in the above technical solution The situation is similar and will not be repeated here.
本发明对所述筒体的尺寸(如厚度)和形状没有特殊的限制，本领域技术人员可根据实际情况进行选择，如可以为圆筒、方筒等。在本发明中，所述筒体用于盛放电解液其材质优选为绝缘材料，更优选为成本较低的绝缘材料，如本领域技术人员熟知的塑料、橡胶等材料。本发明对所述筒体和电极之间的固定方式没有特殊的限制，本领域技术人员可采用熟知的连接方式进行固定，如可采用胶粘剂将筒体底部平面粘接在电极表面。The present invention has no special limitation on the size (such as thickness) and shape of the cylinder, which can be selected by those skilled in the art according to the actual situation, such as a cylinder, a square cylinder and the like. In the present invention, the material of the cylinder used to hold the electrolyte is preferably an insulating material, more preferably a low-cost insulating material, such as plastic, rubber and other materials well known to those skilled in the art. The present invention has no special limitation on the fixing method between the cylinder and the electrode, those skilled in the art can use well-known connection methods for fixing, for example, an adhesive can be used to bond the bottom of the cylinder to the surface of the electrode.
本发明提供的电化学系统的突出优点为在电极表面上设置多个互不相连的接触面，如通过在电极表面设置多个互不相通的凹槽或者在电极表面固定多个互不相通的上下开口的筒体，这样将电极两端通电后就能够在每个接触面上发生不同的电化学反应，通过向不同的凹槽或筒体中注入不同的电解液，本发明提供的电化学系统能够同时进行多种电化学实验，而且在同时进行多种电化学实验时其结构简单的优势更为明显。The outstanding advantage of the electrochemical system provided by the present invention is that a plurality of disconnected contact surfaces are set on the electrode surface, such as by setting a plurality of mutually disconnected grooves on the electrode surface or fixing a plurality of mutually disconnected contact surfaces on the electrode surface. A cylindrical body with upper and lower openings, so that different electrochemical reactions can occur on each contact surface after the two ends of the electrodes are energized. By injecting different electrolytes into different grooves or cylindrical bodies, the electrochemical reaction provided by the present invention The system can perform multiple electrochemical experiments at the same time, and its advantages of simple structure are more obvious when performing multiple electrochemical experiments at the same time.
在本发明中，所述接触面位于电极的两端之间，本发明对接触面在电极两端之间的具体位置没有特殊的限制，接触面可以在电极两端之间的任意位置；本发明中电极的两端之间指的是电极与电源正极和电源负极连接的两个位置之间。在本发明中，所述接触面可以为电极两端之间的全部表面，也可以为电极两端之间的部分表面。在本发明中，上述凹槽和上下开口的筒体需要设置在电极的两端之间。In the present invention, the contact surface is located between the two ends of the electrode, and the present invention has no special restrictions on the specific position of the contact surface between the two ends of the electrode, and the contact surface can be at any position between the two ends of the electrode; In the invention, between the two ends of the electrodes refers to between two positions where the electrodes are connected to the positive pole of the power supply and the negative pole of the power supply. In the present invention, the contact surface may be the entire surface between the two ends of the electrode, or a part of the surface between the two ends of the electrode. In the present invention, the above-mentioned groove and the cylindrical body with upper and lower openings need to be arranged between the two ends of the electrode.
本发明对所述电解液的成分没有特殊的限制，本发明中的电解液可以理解为利用本发明提供的电化学系统进行电化学实验时所采用的原料或者试剂。本发明对所述电化学系统能够进行的电化学实验没有特殊的限制，本领域技术人员熟知的基于电化学原料的电化学实验均可以进行，如电化学发光实验、电聚合实验或者电镀实验等，本发明优选采用电化学系统进行电化学发光实验，这种电化学实验主要检测光信号，对于电流和电位信号则可以检测也可以不检测，尤其适用本发明的这种电化学系统。The present invention has no special limitation on the composition of the electrolyte, and the electrolyte in the present invention can be understood as the raw materials or reagents used in electrochemical experiments using the electrochemical system provided by the present invention. The present invention has no special limitations on the electrochemical experiments that can be performed by the electrochemical system, and electrochemical experiments based on electrochemical raw materials well known to those skilled in the art can be performed, such as electrochemiluminescence experiments, electropolymerization experiments or electroplating experiments, etc. , the present invention preferably adopts an electrochemical system to carry out electrochemiluminescence experiments. This electrochemical experiment mainly detects optical signals, and may or may not detect current and potential signals, and is especially suitable for this electrochemical system of the present invention.
在本发明中，所述电解液可以为进行电化学发光实验所用的溶液如吡啶钌和各种胺(如氨基酸、脂肪胺)的混合溶液；或者鲁米诺和过氧化氢的混合溶液等。在本发明中，所述电解液还可以为电聚合实验所用的溶液如苯胺、噻吩、吡咯的溶液等。在本发明中，所述电解液也可以为进行电镀实验所用的各种电镀液。In the present invention, the electrolyte solution can be a solution used in electrochemiluminescence experiments, such as a mixed solution of ruthenium pyridine and various amines (such as amino acids, fatty amines); or a mixed solution of luminol and hydrogen peroxide, etc. In the present invention, the electrolyte solution may also be a solution used in electropolymerization experiments such as solutions of aniline, thiophene, and pyrrole. In the present invention, the electrolyte solution may also be various electroplating solutions used in electroplating experiments.
本发明是利用给电极通电时，电极两端会存在电压差的现象来构建一种新型的电化学体系。在这种新型的电化学体系中，仅仅只需一个电极。而且，本发明提供的电化学体系在用于多样品电化学实验时，也不需要增加更多的电极，只需要电极表面形成多个盛放电解液(可以盛放相同电解液也可以盛放不同电解液)的空间，使电解液和电极表面的不同位置接触，在多个位置中同时进行电化学实验。本发明提供的电化学体系具有结构简单，便于进行多样品和高通量分析等优点。The invention utilizes the phenomenon that there is a voltage difference between the two ends of the electrodes when the electrodes are energized to construct a novel electrochemical system. In this novel electrochemical system, only one electrode is needed. Moreover, when the electrochemical system provided by the present invention is used for multi-sample electrochemical experiments, there is no need to add more electrodes, and only a plurality of electrolyte solutions need to be formed on the surface of the electrodes (the same electrolyte solution can also be contained). Different electrolytes) make the electrolyte contact with different positions on the electrode surface, and perform electrochemical experiments in multiple positions at the same time. The electrochemical system provided by the invention has the advantages of simple structure, convenient multi-sample and high-throughput analysis, and the like.
本发明实施例提供的电化学系统结构如图1所示，图1为本发明实施例提供的电化学系统的结构示意图，包括：The structure of the electrochemical system provided by the embodiment of the present invention is shown in Figure 1, and Figure 1 is a schematic structural diagram of the electrochemical system provided by the embodiment of the present invention, including:
长方体ITO导电玻璃电极，电极的一端通过导线和电源的正极相连，电极的另一端通过导线和电源的负极相连；Cuboid ITO conductive glass electrode, one end of the electrode is connected to the positive pole of the power supply through a wire, and the other end of the electrode is connected to the negative pole of the power supply through a wire;
固定在电极表面的上下开口的方形筒体；方形筒体和电极表面之间通过密封胶粘接固定，方形筒体和电极表面之间形成可以盛放电解液的空间；A square cylinder with upper and lower openings fixed on the electrode surface; the square cylinder and the electrode surface are bonded and fixed by a sealant, and a space that can hold the electrolyte is formed between the square cylinder and the electrode surface;
方形筒体内部装有电解液。Electrolyte is housed inside the square cylinder.
本发明另一实施例提供的电化学系统的结构如图2所示，图2为本发明实施例提供的电化学系统的结构示意图，与图1的区别在于，固定在电极表面的为多个上下开口的方形筒体，方形筒体与电极表面之间形成多个可以盛放电解液的空间。The structure of the electrochemical system provided by another embodiment of the present invention is shown in Figure 2. Figure 2 is a schematic structural diagram of the electrochemical system provided by the embodiment of the present invention. The difference from Figure 1 is that there are multiple A square cylinder with upper and lower openings, and a plurality of spaces that can hold electrolyte are formed between the square cylinder and the electrode surface.
本发明以下实施例所用原料均为市售商品。The raw materials used in the following examples of the present invention are commercially available products.
实施例1Example 1
本发明实施例1提供的电化学系统的结构示意图如图1所示，包括：The schematic structural diagram of the electrochemical system provided by Embodiment 1 of the present invention is shown in Figure 1, including:
长宽高分别为2厘米、1.5厘米和0.1厘米的长方体ITO导电玻璃，作为电极；Cuboid ITO conductive glass with a length, width and height of 2 cm, 1.5 cm and 0.1 cm, respectively, as electrodes;
电极的一端通过导线与电池的正极连接，电极的另一端通过导线与电池的负极连接，电源采用电化学工作站CHI-660C(直流电)，电压为2V。One end of the electrode is connected to the positive pole of the battery through a wire, and the other end of the electrode is connected to the negative pole of the battery through a wire. The power supply adopts an electrochemical workstation CHI-660C (direct current), and the voltage is 2V.
采用市售的带粘胶的绝缘防水的PET(聚对苯二甲酸乙二醇酯)标签贴纸作为塑料块体；长宽高分别为1.2厘米、1厘米和0.02厘米，用方形打孔器在贴纸中间打出长宽分别为1厘米和0.8厘米的通孔，然后将该带通孔的方形塑料块体贴于电极上，使该绝缘塑料块体的中心通孔和电极表面形成一个能够盛放电解液的空间。Use commercially available insulating and waterproof PET (polyethylene terephthalate) label stickers with viscose as the plastic block; A through hole with a length of 1 cm and a width of 0.8 cm is punched in the middle of the sticker, and then the square plastic block with the through hole is pasted on the electrode, so that the central through hole of the insulating plastic block and the surface of the electrode form a gap capable of containing electrolysis. liquid space.
电解液为鲁米诺和过氧化氢溶于碱性碳酸盐缓冲液(碳酸氢钠、氢氧化钠和水组成)中形成的混合溶液，鲁米诺在混合溶液中的浓度为1mmol/L，过氧化氢在混合溶液中的浓度为1mmol/L。The electrolyte is a mixed solution formed by dissolving luminol and hydrogen peroxide in an alkaline carbonate buffer solution (sodium bicarbonate, sodium hydroxide and water), and the concentration of luminol in the mixed solution is 1mmol/L , the concentration of hydrogen peroxide in the mixed solution is 1mmol/L.
本发明实施例1提供的电化学系统中的电解液为电化学发光溶液，将电解液加入到实施例1提供的电化学系统的塑料块体通孔内部；开启电源通电。由于ITO导电玻璃具有一定的电阻，和电解液接触的ITO导电玻璃两侧会产生电压降，使和电解液接触的ITO导电玻璃一侧发生电化学氧化反应，产生电化学发光。The electrolyte in the electrochemical system provided in Example 1 of the present invention is an electrochemiluminescence solution, and the electrolyte is added into the through hole of the plastic block of the electrochemical system provided in Example 1; the power is turned on. Since the ITO conductive glass has a certain resistance, a voltage drop will occur on both sides of the ITO conductive glass in contact with the electrolyte, so that an electrochemical oxidation reaction occurs on the side of the ITO conductive glass in contact with the electrolyte, resulting in electrochemiluminescence.
采用光电倍增管的发光探测器对产生的发光信号进行检测，可以看到本发明实施例1提供的电化学系统通电时，光电倍增管电压为400V时检测到的发光信号为1200。The luminescence signal generated by the photomultiplier tube is detected by the luminescence detector. It can be seen that when the electrochemical system provided by Embodiment 1 of the present invention is energized, the luminescence signal detected when the photomultiplier tube voltage is 400V is 1200.
采用数码相机进行检测，可以观察到和电解液接触的ITO导电玻璃的阳极端有明显的发光现象，当电极两端施加电压越大，发光强度越强，如图3所示，图3为本发明实施例1提供的电化学系统的性能检测结果(分别为相同条件下电压为2V、3V和4V的发光情况)。Using a digital camera to detect, it can be observed that the anode end of the ITO conductive glass in contact with the electrolyte has obvious luminescence phenomenon. When the voltage applied to both ends of the electrode is greater, the luminescence intensity is stronger, as shown in Figure 3. Figure 3 is the basis The performance detection results of the electrochemical system provided in the first embodiment of the invention (respectively, the luminescence conditions at voltages of 2V, 3V and 4V under the same conditions).
实施例2Example 2
本发明实施例2提供的电化学系统的结构示意图如图2所示，包括：The schematic structural diagram of the electrochemical system provided by Embodiment 2 of the present invention is shown in Figure 2, including:
长宽高分别为4厘米、4厘米和0.1厘米的长方体ITO导电玻璃，作为电极；Cuboid ITO conductive glass with a length, width and height of 4 cm, 4 cm and 0.1 cm, respectively, as electrodes;
电极的一端通过导线与电池的正极连接，电极的另一端通过导线与电池的负极连接，电源采用电化学工作站CHI-660C(直流电)，电压为10V。One end of the electrode is connected to the positive pole of the battery through a wire, and the other end of the electrode is connected to the negative pole of the battery through a wire. The power supply adopts an electrochemical workstation CHI-660C (direct current), and the voltage is 10V.
采用市售的带粘胶的绝缘防水的PET(聚对苯二甲酸乙二醇酯)标签贴纸作为塑料块体(多个上下开口的筒体)，长宽高分别为3厘米、3厘米和0.02厘米，用圆形打孔器在贴纸中间打出9个直径为0.8厘米的通孔，使9个通孔均匀分布在塑料块体中，各个通孔之间不能互相连通是各自独立的；然后将该带圆形通孔的方形塑料块体贴于电极上，使该绝缘塑料块体中的通孔和电极表面形成多个能够盛放电解液的空间。Use commercially available insulating and waterproof PET (polyethylene terephthalate) label stickers with adhesive as the plastic block (multiple cylinders with upper and lower openings), and the length, width and height are 3 cm, 3 cm and 3 cm respectively. 0.02 cm, use a circular hole punch to punch 9 through holes with a diameter of 0.8 cm in the middle of the sticker, so that the 9 through holes are evenly distributed in the plastic block, and the through holes cannot be connected to each other because they are independent; then The square plastic block with a circular through hole is pasted on the electrode, so that the through hole in the insulating plastic block and the surface of the electrode form a plurality of spaces capable of containing electrolyte.
电解液为鲁米诺和过氧化氢溶于碱性碳酸盐缓冲液(由碳酸氢钠、氢氧化钠和水组成)中形成的混合溶液，鲁米诺在混合溶液中的浓度为1mmol/L，过氧化氢在混合溶液中的浓度为1mmol/L。The electrolyte is a mixed solution formed by dissolving luminol and hydrogen peroxide in an alkaline carbonate buffer solution (composed of sodium bicarbonate, sodium hydroxide and water), and the concentration of luminol in the mixed solution is 1mmol/ L, the concentration of hydrogen peroxide in the mixed solution is 1mmol/L.
本发明实施例2提供的电化学系统中的电解液为电化学发光溶液，将电解液加入到实施例2提供的电化学系统的塑料块体的每个通孔中；开启电源通电。The electrolyte in the electrochemical system provided by Example 2 of the present invention is an electrochemiluminescent solution, and the electrolyte is added to each through hole of the plastic block of the electrochemical system provided by Example 2; power is turned on.
采用数码相机进行检测，可以观察到和电解液接触的ITO导电玻璃的阳极端有明显的发光现象，如图4所示，图4为本发明实施例2提供的电化学系统的性能检测结果，本发明提供的电化学系统能够同时进行多个样品的检测，而且结构简单。Adopt digital camera to detect, can observe that the anode end of the ITO conductive glass contacted with electrolyte has obvious luminescent phenomenon, as shown in Figure 4, Figure 4 is the performance detection result of the electrochemical system that the embodiment of the present invention 2 provides, The electrochemical system provided by the invention can simultaneously detect a plurality of samples, and has a simple structure.
由以上实施例可知，本发明提供了一种电化学系统，包括：一个电极，所述电极的一端和电源正极相连，所述电极的另一端和电源负极相连；电解液，所述电解液与电极具有接触面；所述接触面位于电极的两端之间。与现有技术相比，本发明提供的电化学系统只有一个电极，电解液与电极具有接触面，电极具有电阻，电流通过电极时，与电解液接触的两侧电极产生压降从而具有不同的电势，一侧形成阴极，另一侧形成阳极，构成电化学系统。本发明提供的电化学系统只有一个电极，结构简单，操作方便。As can be seen from the above embodiments, the present invention provides an electrochemical system, comprising: an electrode, one end of the electrode is connected to the positive pole of the power supply, and the other end of the electrode is connected to the negative pole of the power supply; an electrolyte, the electrolyte is connected to the negative pole of the power supply The electrode has a contact surface; the contact surface is located between the two ends of the electrode. Compared with the prior art, the electrochemical system provided by the present invention has only one electrode, the electrolyte and the electrode have a contact surface, and the electrode has a resistance. Potential, one side forms the cathode, and the other side forms the anode, forming an electrochemical system. The electrochemical system provided by the invention has only one electrode, simple structure and convenient operation.
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