CN218297744U - Electrode sample to be detected and device for detecting electrode reinforced service life - Google Patents
Electrode sample to be detected and device for detecting electrode reinforced service life Download PDFInfo
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Abstract
The application provides an electrode sample and a device to be detected for detecting the enhanced service life of an electrode, and relates to the technical field of electrochemistry. The electrode sample to be tested for the electrode reinforced life detection comprises: filiform electrode, wire and the epoxy layer of awaiting measuring, wherein: one end of the filamentous electrode to be tested is welded at one end of the lead, one part of the filamentous electrode to be tested and one part of the lead are both wrapped by the epoxy resin layer, and the other part of the filamentous electrode to be tested and the other part of the lead are not wrapped by the epoxy resin layer. Compared with an electrode test piece, the electrode sample to be detected of the scheme can reduce material consumption, and energy consumption can be reduced during electrode service life strengthening detection due to the reduction of the area of the electrode sample to be detected.
Description
Technical Field
The application relates to the technical field of electrochemistry, in particular to an electrode sample to be detected and a device for detecting the strengthened service life of an electrode.
Background
In the electrochemical water treatment process, the service life of the anode plate is one of the important factors influencing the water treatment cost. The water quality of the water treatment object is complicated, and the electrode life may be significantly shortened, so that it is necessary to test and predict the electrode life. However, since the electrode life is usually long, in order to shorten the testing time, it is usually necessary to adopt a life-enhancing testing method, that is, a method of changing experimental conditions to accelerate the failure of the electrode, to test the life-enhancing of the electrode, so as to estimate the actual service life of the electrode in different waste waters and avoid the treatment cost rise caused by the rapid corrosion failure of the anode.
However, in the related art, the test of the enhanced life of the anode plate has the problems of energy waste and serious consumption of electrode materials.
Disclosure of Invention
In order to solve the problems, the application provides an electrode sample to be tested and a device for testing the enhanced service life of the electrode.
According to a first aspect of the application, an electrode specimen to be tested for electrode-enhanced life detection is provided, comprising: filiform electrode, wire and the epoxy layer of awaiting measuring, wherein:
one end of the filamentous electrode to be tested is welded at one end of the lead, one part of the filamentous electrode to be tested and one part of the lead are both wrapped by the epoxy resin layer, and the other part of the filamentous electrode to be tested and the other part of the lead are not wrapped by the epoxy resin layer.
In some embodiments of the present application, the epoxy layer is formed based on epoxy filled in a gap between the welded wire and the tip plastic tube.
According to the technical scheme of this application, the electrode sample that awaits measuring includes filiform electrode, wire and the epoxy layer of awaiting measuring, and wherein the one end welding of filiform electrode that awaits measuring is in the one end of wire, and filiform electrode and the wire of awaiting measuring are all lived by epoxy parcel, and filiform electrode another part of awaiting measuring is not lived by epoxy layer parcel, compares the electrode test piece like this and can reduce material consumption, because the area reduction of the electrode sample that awaits measuring again, also can reduce energy consumption when electrode intensification life-span detects.
According to a second aspect of the present application, there is provided an electrode-reinforced life detection device:
the electrode sample to be measured according to the first aspect;
an electrolytic reaction tank;
an inert cathode and a detection cell, wherein,
the electrode sample to be detected and the inert cathode are positioned in the electrolytic reaction tank, wherein constant current is applied to the electrode sample to be detected and the inert cathode so as to form an electrolytic process in the electrolytic reaction tank;
and the detection unit is respectively connected with the lead and the inert cathode in the electrode sample to be detected.
In some embodiments of the present application, the apparatus further comprises:
and the constant-temperature water bath unit is used for providing a preset constant-temperature environment for the electrolytic reaction tank.
In other embodiments of the present application, the electrolytic reaction cell is equipped with a sealed lid, and the sealed lid has a gas outlet.
And at least two slots are reserved on the sealing cover and are respectively used for fixing the electrode sample to be tested and the inert cathode.
As a possible implementation manner, the number of the electrode samples to be detected is multiple, the number of the inert cathodes is multiple, each electrode to be detected corresponds to one inert cathode, and each electrode to be detected and the corresponding inert cathode form a first electrode group; the detection unit comprises a plurality of test channels, wherein:
each first electrode group is connected with any one of the plurality of test channels, and each test channel is connected with at most one first electrode group.
And the electrode sample to be tested and the inert electrode in each first electrode group are connected with the corresponding test channel.
As another possible implementation manner, the number of the electrode samples to be detected is multiple, the multiple electrode samples to be detected share one inert cathode, and each electrode to be detected and the inert cathode form a second electrode group; the detection unit comprises a plurality of test channels, wherein:
each second electrode group is connected with any one of the plurality of test channels, and each test channel is connected with at most one second electrode group.
And the electrode sample to be tested and the inert electrode in each second electrode group are connected with the corresponding test channel.
According to the technical scheme of the application, the detection unit is respectively connected with the electrode sample to be detected and the inert cathode which are prepared on the basis of the filamentous electrode to be detected, and constant current is applied to the electrode sample to be detected and the inert cathode, so that an electrolysis process is formed in the electrolysis reaction tank, and the detection of the strengthened service life of the electrode is realized. Because the electrode sample to be tested in the scheme is prepared on the basis of the filamentous electrode to be tested, the material consumption can be reduced compared with an electrode test piece, and the energy consumption can be reduced under the condition that the test current density is not changed due to the reduction of the area of the electrode sample to be tested.
Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.
Drawings
The foregoing and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a block diagram illustrating a structure of an electrode sample to be tested for detecting an enhanced lifetime of an electrode according to an embodiment of the present disclosure;
fig. 2 is a block diagram illustrating an embodiment of an apparatus for detecting an enhanced lifetime of an electrode;
fig. 3 is a block diagram of another enhanced lifetime detection apparatus for an electrode according to an embodiment of the present disclosure.
Detailed Description
Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative and intended to explain the present application and should not be construed as limiting the present application.
It should be noted that, in the electrocatalytic oxidation process, a Dimensionally Stable Anode (DSA) is the electrode with the most potential application at present. DSA is widely applied in the fields of chlor-alkali industry, electrolytic refining, electroplating, organic electrosynthesis and the like. By adopting the coating titanium electrode, the service life of the electrode can be prolonged, the problem of electrode plate interval change is eliminated, the cell voltage is reduced, the energy consumption is reduced, the problem of electrolyte pollution caused by impurities entering the electrolyte in the electrode is reduced, and great progress is brought to the industry. However, in the wastewater treatment process, the water quality is relatively complex and fluctuates greatly. The common sulfate radical and chloride ion mixed salt system in the wastewater can aggravate the electrode corrosion, and if fluoride ions exist, the titanium substrate can be quickly corroded in the electrolytic process, so that the electrode fails. Depending on the type of organic matter in the wastewater and the reaction conditions, electropolymerization may occur to passivate the electrodes, and certain types of organic matter may also accelerate electrode corrosion. Due to the fact that water quality changes greatly, the service life of the electrode is difficult to reasonably estimate, and certain risks exist when the electrocatalytic oxidation technology is used as a wastewater treatment means. Therefore, it is necessary to test the accelerated life of the electrode before use. However, in the related art, the problem of energy waste and serious consumption of electrode materials exists in the test of the enhanced service life of the electrode.
In order to solve the problems, the application provides an electrode sample to be tested and a device for testing the service life of the electrode.
Fig. 1 is a block diagram of a structure of an electrode sample to be tested for detecting an enhanced lifetime of an electrode according to an embodiment of the present disclosure. As shown in fig. 1, the electrode sample to be measured includes a wire-like electrode to be measured 101, a wire 102, and an epoxy resin layer 103.
In some embodiments of the present application, one end of the wire electrode 101 to be tested is soldered to one end of the wire 102, a portion of the wire electrode 101 to be tested and a portion of the wire 102 are both covered with the epoxy resin layer 103, and another portion of the wire electrode 101 to be tested and another portion of the wire 102 are not covered with the epoxy resin layer 103. The portion of the conductive wire 102 not covered by the epoxy resin layer 103 is generally used for connection with an external component.
In some embodiments of the present application, the electrode sample to be tested may be a coated electrode in the field of electrochemical water treatment, such as a titanium-based coated electrode, or may be other electrodes requiring enhanced lifetime detection. The filamentous electrode to be detected is the electrode to be detected in the shape of a filamentous wire, and the material and the method in the preparation process of the filamentous electrode to be detected are the same as those in the preparation process of the electrode to be detected, but the shape of the electrode to be detected is different.
In some embodiments of the present application, the diameter of the wire electrode 101 to be measured may be determined according to actual requirements, and the diameter of the wire electrode 101 to be measured illustrated in fig. 1 is 1mm. The length of the part of the wire-shaped electrode to be measured 101 which is not covered by the epoxy resin layer 103 can also be determined based on actual requirements, and the length of the part of the wire-shaped electrode to be measured 101 which is not covered by the epoxy resin layer 103 in the example of fig. 1 is 10mm. Therefore, the use of electrode materials can be reduced, and the surface area of the electrode participating in the electrolysis process can be reduced due to the use of the electrode wire, so that the energy consumption in the process of detecting the strengthened service life can be reduced.
As an embodiment, the electrode sample to be measured shown in fig. 1 may be prepared by: welding a filamentous electrode to be detected 101 on a lead 102, wherein the diameters of the filamentous electrode to be detected 101 and the lead 102 are both 1mm, placing the welded filamentous electrode to be detected 101 and the lead 102 in a pointed plastic tube with an inner diameter of 5mm, wherein the length of the filamentous electrode to be detected 101 leaking out of the pointed side of the pointed plastic tube is 10mm, and the length of the lead 102 leaking out of the non-pointed side of the pointed plastic tube is a certain length, such as 2mm; filling epoxy resin into gaps formed between the lead 102 and the part of the filamentous electrode to be tested 101 positioned in the pointed plastic tube and the pointed plastic tube respectively, placing for 24 hours after filling, and removing the plastic tube after the epoxy resin is completely hardened to obtain the electrode sample to be tested shown in fig. 2.
According to the electrode sample that awaits measuring for electrode intensification life-span detects of this application embodiment, the electrode sample that awaits measuring includes filiform electrode, wire and the epoxy layer of awaiting measuring, wherein the one end welding of filiform electrode that awaits measuring is in the one end of wire, partly all wrapped up by epoxy of filiform electrode and the wire of awaiting measuring, another part of filiform electrode and the another part of wire of awaiting measuring are not wrapped up by the epoxy layer, so compare the electrode test piece and can reduce material consumption like this, owing to the area reduction of the electrode sample that awaits measuring, also can reduce energy consumption when electrode intensification life-span detects.
Fig. 2 is a block diagram of an electrode life-enhancing detection apparatus according to an embodiment of the present disclosure. As shown in FIG. 2, the apparatus comprises an electrolytic reaction tank 201, an electrode sample 202 to be measured according to the above embodiment, an inert cathode 203, and a detection unit 204. Wherein:
the electrode sample 202 to be detected and the inert cathode 203 are positioned in the electrolytic reaction tank 201, and the structure of the electrode sample 202 to be detected is the same as that of the electrode sample to be detected for the electrode enhanced life detection described in the above embodiment. Wherein, constant current is applied to the electrode sample 202 to be measured and the inert cathode 203, so that an electrolytic process is formed in the electrolytic reaction tank. The detection unit 204 is connected to the lead wire and the inert cathode 203 in the electrode sample 202 to be measured, respectively. The detection unit 204 is connected to a portion of the lead wire of the electrode sample 202 to be detected, which is not covered by the epoxy resin layer. The detecting unit 204 is used for detecting the voltage value of the electrolysis process and determining the enhanced life of the electrode sample 202 to be detected according to the voltage value, and the principle of detecting the enhanced life of the electrode sample 202 to be detected is consistent with the principle of detecting the enhanced life in the related art.
In some embodiments of the present application, the electrode sample 202 to be tested may be a coated electrode in the field of electrochemical water treatment, such as a titanium-based coated electrode, or may be other electrodes requiring enhanced lifetime detection. The inert cathode 203 may be a cathode electrode in a general electrolytic reaction, and may be a platinum sheet electrode, for example. The electrolytic reaction tank 201 contains an electrolyte, which may be an electrolyte generally used in accelerated life test, such as a sulfuric acid solution having a concentration of 0.5 mol/L. Wherein, the electrode sample 202 to be measured and the inert cathode 203 are both partially immersed in the electrolyte to form an electrolytic system.
When the electrode sample 202 to be tested is fixed, the side, which is not wrapped by the epoxy resin layer, of the filament electrode to be tested in the electrode sample 202 to be tested is placed downwards, so that the filament electrode to be tested is in contact with the electrolyte, and an electrolytic system is formed. In addition, because the epoxy resin layer wraps part of the filamentous electrode to be detected and part of the lead, only the part of the filamentous electrode to be detected which is not wrapped participates in the electrolysis process, and the diameter of the filamentous electrode to be detected and the length of the part of the filamentous electrode to be detected which is not wrapped by the epoxy resin layer can be determined according to actual requirements, so that the use of electrode materials can be reduced, the surface area of the electrode which participates in the electrolysis process can also be reduced due to the use of the electrode wires, and the energy consumption in the process of strengthening the service life detection can be reduced.
As an embodiment, the electrode sample to be measured as shown in fig. 2 may be prepared by: welding a filamentous electrode to be detected on a lead, wherein the diameters of the filamentous electrode to be detected and the lead are both 2mm, placing the welded filamentous electrode to be detected and the lead in a tip plastic tube with the inner diameter of 6mm, wherein the length of the filamentous electrode to be detected leaking out of the tip side of the tip plastic tube is 10mm, and the length of the lead leaking out of the non-tip side of the tip plastic tube is 2mm; and filling epoxy resin into gaps formed between the lead and the part of the filamentous electrode to be detected positioned in the pointed plastic tube and the pointed plastic tube respectively, placing for 48 hours after filling, and removing the plastic tube after the epoxy resin is completely hardened to obtain the electrode sample to be detected as shown in figure 2.
According to the device for detecting the service life of the electrode, the detection unit is respectively connected with the electrode sample to be detected and the inert cathode which are prepared on the basis of the filamentous electrode to be detected, constant current is applied to the electrode sample to be detected and the inert cathode, so that an electrolysis process is formed in the electrolysis reaction tank, and the detection of the service life of the electrode is enhanced. Because the electrode sample to be tested in the scheme is prepared on the basis of the filamentous electrode to be tested, the material consumption can be reduced compared with an electrode test piece, and the energy consumption can be reduced under the condition that the test current density is not changed due to the reduction of the area of the electrode sample to be tested.
Fig. 3 is a block diagram of another structure of an electrode enhanced lifetime detection apparatus according to an embodiment of the present disclosure. As shown in fig. 3, the apparatus includes: an electrolytic reaction tank 301, an electrode sample to be tested 302, an inert cathode 303, a detection unit 304 and a constant temperature water bath unit 305. The connection mode and structure of the electrolytic reaction cell 301, the electrode sample 302 to be detected, the inert cathode 303, and the detection unit 304 are the same as those of the above embodiments, and the constant temperature water bath unit 305 is configured to provide a preset constant temperature environment for the electrolytic reaction cell 301, and generally, in the detection process of the electrode enhanced life, the temperature of the constant temperature water bath may be set to 50 to 70 ℃, so as to reduce the duration of the detection process.
In some embodiments of the present application, the electrolytic reaction cell 301 may be equipped with a sealing cover 301-1, and the sealing cover 301-1 has a gas outlet 301-2 for discharging gas generated during electrolysis. Since the electrolytic reaction tank 301 is equipped with a sealing lid, evaporation of the electrolytic solution at the temperature of the water bath can be avoided. In addition, in order to fix the electrode, at least two slots 301-3 may be reserved on the sealing cover 301-1, and the at least two slots 301-3 are respectively used for fixing the electrode sample 302 to be measured and the inert cathode 303.
The life of the electrodes may be as long as several tens to several thousands of hours, and if the detection device can detect only the life of one electrode under test, it takes a long time to detect the life of a plurality of electrodes under test. In order to solve the above problem, in some embodiments of the present application, the detection unit 304 may include a plurality of test channels 304-1, so that when there are a plurality of electrode samples to be tested, a multi-channel parallel test may be implemented to improve test efficiency and test accuracy. It should be noted that the number of the slots reserved on the sealing cover 301-1 may also be multiple, and the number may be determined based on the actual application requirement, so as to fix the multiple electrode samples to be tested and the inert cathode.
In one embodiment, the number of the electrode samples to be tested is multiple, and the number of the inert cathodes is multiple, each inert cathode corresponds to an electrode, and each electrode to be tested and the corresponding inert cathode form a first electrode group. Each first electrode group is connected with any one of the plurality of test channels, and each test channel is connected with at most one first electrode group. Each test channel is used for providing constant current for the first electrode group connected with the test channel and detecting the strengthened service life of the corresponding electrode sample to be tested. And the electrode sample to be tested and the inert electrode in each first electrode group are connected with the corresponding test channel.
In fig. 3, the number of the slots 301-3 on the sealing cover 301-1 is 8, the number of the testing channels 304-1 is 4, the number of the electrode samples 302 to be tested is 2, and the number of the inert cathodes 303 is 2, wherein the electrode samples to be tested and the inert cathodes form 2 first electrode groups, each first electrode group is connected with any one of the 4 testing channels 304-1, that is, the electrode samples 302 to be tested and the inert cathodes 303 in each first electrode group are connected with the corresponding testing channel 304-1, and each testing channel 304-1 is connected with at most one first electrode group. Thus, if test channel 304-1 is connected, the connected test channel 304-1 can provide a constant current to the first electrode set connected thereto and detect the enhanced life of the electrode coupon 302 under test in the first electrode set connected thereto.
In another embodiment, the number of the electrode samples to be tested in the apparatus is multiple, the multiple electrode samples to be tested share one inert cathode, each electrode to be tested and the inert cathode form a second electrode group, and the detection unit includes multiple test channels, wherein each second electrode group is connected to any one of the multiple test channels, and at most one second electrode group is connected to each test channel. And the electrode sample to be tested and the inert electrode in each second electrode group are connected with the corresponding test channel. Each test channel is used for providing constant current for the second electrode group connected with the test channel and detecting the strengthened service life of the corresponding electrode sample to be tested.
According to the reinforced life detection device of the electrode, the constant-temperature water bath unit is additionally arranged, so that the corresponding environment temperature can be provided for the electrolysis process, and the detection process is accelerated. In addition, including a plurality of test channels in the detecting element, when being a plurality of to the electrode sample that awaits measuring, can not only promote detection efficiency for strengthening the life-span to different electrode samples that await measuring through a plurality of parallel test channels detects, also can promote the detection precision.
Next, in order to verify the life enhancement testing apparatus for an electrode in the embodiment of the present application, the life enhancement of an electrode sample to be tested was tested by the following experiment.
Preparing a titanium electrode sample with a ruthenium-iridium coating and a titanium electrode sample with an iridium-tantalum coating by using the structure of the electrode sample to be detected for detecting the strengthened service life of the electrode in the embodiment, wherein the wire electrode diameter of the prepared electrode sample is 1mm, and the effective length of the prepared electrode sample is 10mm; taking a titanium electrode sample of the ruthenium iridium coating and a titanium electrode sample of the iridium tantalum coating as electrode samples to be detected, taking a platinum sheet electrode as an inert cathode, and placing the inert cathode and the platinum sheet electrode into an electrolytic reaction tank; by adopting a double-channel test, the titanium electrode sample of the ruthenium iridium coating and the corresponding platinum sheet electrode are connected with the test channel 1 of the detection unit, the titanium electrode sample of the iridium tantalum coating and the corresponding platinum sheet electrode are connected with the test channel 2 of the detection unit, and the current density provided by each test channel for the electrolytic reaction is 0.5A/cm 2 (ii) a Wherein the electrolyte in the electrolytic reaction tank is 0.5mol/L sulfuric acid solution, and the water bath temperature is 50 ℃; the preset voltage threshold is 5V, the test channel 1 and the test channel 2 detect the voltage value of the electrolysis process at the sampling density of 60/h, and when the voltage value is greater than or equal to 5V, the voltage value is used as a detection end point, namely the time from the beginning of detection to the end of detection is used as the strengthened service life of the electrode. Wherein the strengthening life of the prepared ruthenium iridium coated titanium electrode sample is 180h, and the strengthening life of the iridium tantalum coated titanium electrode sampleIs 1067h.
In the description of the present specification, reference to the description of "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Moreover, various embodiments or examples and features of various embodiments or examples described in this specification can be combined and combined by one skilled in the art without being mutually inconsistent.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless explicitly specified otherwise.
It should be understood that portions of the present application may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. If implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.
In addition, functional units in the embodiments of the present application may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may also be stored in a computer readable storage medium.
The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc. Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.
Claims (10)
1. An electrode specimen to be measured for electrode life-strengthening detection, comprising: filiform electrode, wire and the epoxy layer of awaiting measuring, wherein:
one end of the filamentous electrode to be tested is welded at one end of the lead, one part of the filamentous electrode to be tested and one part of the lead are wrapped by the epoxy resin layer, and the other part of the filamentous electrode to be tested and the other part of the lead are not wrapped by the epoxy resin layer.
2. The electrode specimen to be tested according to claim 1, wherein the epoxy resin layer is formed based on epoxy resin filled in a gap between the welded wire and the tip plastic tube.
3. An electrode-reinforced life detection device, comprising:
the electrode sample to be tested according to claim 1 or 2;
an electrolytic reaction tank;
an inert cathode and a detection cell, wherein,
the electrode sample to be tested and the inert cathode are positioned in the electrolytic reaction tank, wherein constant current is applied to the electrode sample to be tested and the inert cathode so as to form an electrolytic process in the electrolytic reaction tank;
and the detection unit is respectively connected with the lead and the inert cathode in the electrode sample to be detected.
4. The apparatus of claim 3, further comprising:
and the constant-temperature water bath unit is used for providing a preset constant-temperature environment for the electrolytic reaction tank.
5. The apparatus as claimed in claim 3, wherein the electrolytic reaction tank is equipped with a sealing cover, and the sealing cover is provided with a gas outlet.
6. The device according to claim 5, characterized in that at least two slots are reserved on the sealing cover, and the at least two slots are respectively used for fixing the electrode sample to be tested and the inert cathode.
7. The device according to any one of claims 3 to 6, wherein the electrode to be tested is a plurality of samples, the inert cathode is a plurality of samples, each electrode to be tested corresponds to one inert cathode, and each electrode to be tested and the corresponding inert cathode form a first electrode group; the detection unit comprises a plurality of test channels, wherein:
each first electrode group is connected with any one of the plurality of test channels, and each test channel is connected with at most one first electrode group.
8. The apparatus of claim 7, wherein the electrode sample to be tested and the inert electrode in each of the first electrode sets are connected to corresponding test channels.
9. The device according to any one of claims 3 to 6, wherein the electrode sample to be tested is a plurality of electrode samples, the plurality of electrode samples to be tested share one inert cathode, and each electrode to be tested and the inert cathode form a second electrode group; the detection unit comprises a plurality of test channels, wherein:
each second electrode group is connected with any one of the plurality of test channels, and each test channel is connected with at most one second electrode group.
10. The apparatus of claim 9, wherein the electrode sample to be tested and the inert electrode in each of the second electrode sets are connected to the corresponding test channel.
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