Electrochemical testing device suitable for single-double working electrode system

Abstract

The invention belongs to the field of electrochemical testing, and particularly relates to an electrochemical testing device suitable for a single-double working electrode system, which comprises a tank body, a working plate, a pressing plate, a working electrode communicating hole, a groove and a pressing bolt, an electrolyte cavity is arranged in the cell body, two sides of the cell body are respectively connected with a working plate, the working plates are connected with a pressing plate through bolts and nuts, the center of each working plate is provided with a working electrode communicating hole, and the center of each pressing plate is provided with a pressing bolt; the electrolyte cavity can contain various types of electrolyte solutions, the working electrode is pressed and fixed through the pressing plate, and the distance between the working plate and the pressing plate can be adjusted through the four sets of adjusting bolts and the adjusting nuts so as to be suitable for the working electrodes of various shapes and sizes. The device is simple and stable in structure, good in sealing performance, simple and convenient in electrode clamping, and suitable for various electrochemical tests such as alternating current impedance spectroscopy, linear polarization scanning and electrochemical noise of metal, film and coating systems.

Description

Technical Field

[0001] This invention belongs to the field of electrochemical testing, specifically relating to an electrochemical testing device suitable for single and dual working electrode systems. Background Technology

[0002] Three-electrode electrochemical testing devices are commonly used in electrochemical research and testing. However, conventional three-electrode electrochemical testing can only be performed on single-working-electrode systems, such as AC impedance spectroscopy or linear polarization scanning. Since electrochemical noise testing systems often employ two working electrodes and one reference electrode, and the two electrodes must be identical in shape, size, and exposure area during testing, conventional devices often cannot simultaneously meet these requirements. Furthermore, current electrochemical testing devices also have the following drawbacks and limitations: (1) The complex structure and poor sealing result in unstable testing; (2) The electrode clamping is unstable and cannot effectively fix the metal sample to be tested, and the working electrode area is difficult to guarantee uniformity; (3) High requirements for the shape and size of the working electrode; (4) The working electrode often needs to be mounted, which makes the testing process complicated.

[0003] Therefore, there is an urgent need to provide an electrochemical testing device that is simple and stable in structure, easy to assemble, easy to operate, and applicable to both dual-working-electrode and single-working-electrode systems, so as to achieve convenient, fast, highly stable, and multifunctional electrochemical testing. Summary of the Invention

[0004] This invention proposes an electrochemical testing device suitable for single and dual working electrode systems, in order to solve the problems of complex structure, poor sealing and adaptability of existing electrochemical testing devices.

[0005] To achieve the above objectives, the present invention proposes the following technical solution: An electrochemical testing device suitable for single and dual working electrode systems includes a tank, a working plate, a clamping plate, a working electrode connecting hole, a groove, and clamping bolts; The tank is equipped with an electrolyte chamber inside. A working plate is connected to each side of the tank. Each working plate is connected to a clamping plate. A working electrode communication hole is provided in the center of the working plate. A clamping bolt is provided in the center of the clamping plate. The top of the tank is provided with a central electrode placement hole, and a side electrode placement hole is provided on each side of the central electrode placement hole.

[0006] Preferably, the upper outer side of the working plate is provided with a groove.

[0007] Preferably, a gasket groove is provided on the outside of the working electrode connecting hole.

[0008] Preferably, the working electrode pressure plate and the clamping plate are connected and assembled by four sets of adjusting bolts and adjusting nuts.

[0009] Preferably, the adjusting bolt and adjusting nut are made of stainless steel.

[0010] Preferably, the groove and the clamping plate are made of acrylic.

[0011] Preferably, the clamping bolt is made of polytetrafluoroethylene.

[0012] The advantages of this invention are: This invention proposes an electrochemical testing device for single and dual working electrode systems. The electrolyte chamber can hold various types of electrolyte solutions. The working electrodes are fixed by clamping on a clamping plate. The distance between the working plate and the clamping plate can be adjusted by four sets of adjusting bolts and adjusting nuts to accommodate working electrodes of various shapes and sizes. This invention features a simple and stable structure, good sealing performance, and easy and convenient electrode clamping. It is suitable for various electrochemical tests, such as AC impedance spectroscopy, linear polarization scanning, and electrochemical noise analysis, of metal, film, and coating systems. Attached Figure Description

[0013] The accompanying drawings, which form part of this specification, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings: Figure 1 This is a schematic diagram of an electrochemical testing device suitable for single and dual working electrode systems. Figure 2 A top view of an electrochemical testing device suitable for single and dual working electrode systems; Figure 3 This is a cross-sectional view of an electrochemical testing device suitable for single and dual working electrode systems. Detailed Implementation

[0014] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0015] The following detailed description is exemplary and intended to provide further detailed explanation of the invention. Unless otherwise specified, all technical terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used in this invention is for describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention. Example

[0016] Please see Figure 1 As shown, the present invention provides an electrochemical testing device suitable for single and dual working electrode systems, including a tank 1, a working plate 2, a clamping plate 3, an electrolyte chamber 4, a working electrode connecting hole 5, a central electrode placement hole 6, a side electrode placement hole 7, a washer groove 8, a groove 9, a clamping bolt 10, an adjusting bolt 11, and an adjusting nut 12.

[0017] The tank has a rectangular electrolyte cavity 4 in the middle, and symmetrical integrated working plates 2 on both sides. The working plate has a working electrode connecting hole 5 in the center, and a gasket groove 8 is provided on the outer center of the working electrode connecting hole 5 for placing a rubber gasket. The upper outer end of the working plate has a groove 9. The upper end of the tank has a center electrode placement hole 6 and a side electrode placement hole 7. The center of the clamping plate has a clamping bolt 10. The working electrode clamping plate and the clamping plate are connected and assembled by four sets of adjusting bolts 11 and adjusting nuts 12.

[0018] The purpose of this invention is to provide an electrochemical testing device with dual working electrodes and a single working electrode system. The device has a simple and stable structure, good sealing performance, and simple and convenient electrode clamping. It is suitable for various electrochemical tests such as AC impedance spectroscopy, linear polarization scanning, and electrochemical noise in metal, film and coating systems.

[0019] An electrochemical testing device suitable for single and dual working electrode systems according to the present invention is implemented as follows: The electrolyte chamber 4 can hold various types of electrolyte solutions, which contact the working electrode through the working electrode connecting hole 5. The working electrode is placed on the working electrode connecting hole 5 and pressed and fixed by the clamping plate 3. The center electrode placement hole 6 and the side electrode placement hole 7 can be fitted with corks containing the reference electrode and auxiliary electrode.

[0020] The distance between the working plate 2 and the clamping plate 3 can be adjusted by the four sets of adjusting bolts 11 and the adjusting nuts 12. The clamping plate 3 is parallel to the back of the working sample to accommodate working electrodes of various shapes and sizes.

[0021] The working electrode connecting holes 5 are all the same size, and one working electrode can be fixedly placed in each hole simultaneously, which is suitable for electrochemical testing of a dual-working-electrode system. Alternatively, a fixed non-conductive flat glass plate can be placed in one of the working electrode connecting holes 5, and a working electrode can be placed in the other working electrode connecting hole 5, which is suitable for electrochemical testing of a single-working-electrode system. Example

[0022] For electrochemical testing of a dual-working-electrode system, as shown in Example 1, an electrochemical testing device suitable for single and dual-working-electrode systems can be operated using the following steps: The first step is to place the first working electrode plate into the working electrode connecting hole 5 on one side, and then tighten the working electrode with the clamping bolt 10 to ensure that it is tightly attached to the rubber ring and has good sealing performance.

[0023] The second step is to place the second working electrode plate into the working electrode connecting hole 5 on the other side, and tighten the working electrode with the clamping bolt 10 to ensure that it is tightly attached to the rubber ring and has good sealing performance.

[0024] The third step is to inject electrolyte solution into the electrolyte chamber 4, ensuring that the liquid level covers the working electrode hole.

[0025] Fourth step: After removing air bubbles from the surface of the working electrode, place the cork containing the Luggin capillary into the side electrode placement hole 7 near the working electrode, and then insert the reference electrode into the upper end of the Luggin capillary.

[0026] Fifth step, insert the cork containing the auxiliary electrode into the center electrode placement hole 6, ensuring that the auxiliary electrode is placed parallel to the working electrode.

[0027] The sixth step is to connect the electrodes of the assembled electrochemical testing device to the electrochemical workstation and conduct electrochemical noise testing.

[0028] In this embodiment, the tank 1 and the clamping plate 3 are made of acrylic, the Lugin capillary tube is made of glass, the clamping bolt 10 is made of polytetrafluoroethylene, and the adjusting bolt 11 and the adjusting nut 12 are made of stainless steel.

[0029] The working electrode hole diameter in this embodiment is 10cm.

[0030] In this embodiment, the two working electrodes are the same 40mm×40mm×3mm aluminum alloy, and the reference electrode is a saturated calomel electrode.

[0031] The electrolyte in this embodiment is a 3.5% sodium chloride solution.

[0032] The electrochemical workstation used in this embodiment is model CHI604D. Example

[0033] For electrochemical testing of a single working electrode system, as shown in Example 1, an electrochemical testing device suitable for single and dual working electrode systems can be operated using the following steps: The first step is to place a glass plate on one side of the working electrode connecting hole 5 and tighten it with the clamping bolt 10 to seal the working electrode hole on that side.

[0034] The second step is to place the working electrode plate into the working electrode connecting hole 5 on the other side, and tighten the working electrode with the clamping bolt 10 to ensure that it is in close contact with the rubber ring.

[0035] The third step is to inject electrolyte solution into the electrolyte chamber 4, ensuring that the liquid level covers the working electrode hole.

[0036] Fourth step: After removing air bubbles from the surface of the working electrode, place the cork containing the Luggin capillary into the side electrode placement hole 7 near the working electrode, and then insert the reference electrode into the upper end of the Luggin capillary.

[0037] Fifth step, insert the cork containing the auxiliary electrode into the center electrode placement hole 6, ensuring that the auxiliary electrode is placed parallel to the working electrode.

[0038] The sixth step is to connect the electrodes of the assembled electrochemical testing device to the electrochemical workstation and perform AC impedance spectroscopy testing.

[0039] In this embodiment, the tank 1 and the clamping plate 3 are made of acrylic, the Lugin capillary tube is made of glass, the clamping bolt 10 is made of polytetrafluoroethylene, and the adjusting bolt 11 and the adjusting nut 12 are made of stainless steel.

[0040] The working electrode hole diameter in this embodiment is 10cm.

[0041] In this embodiment, the working electrode is a 40mm×40mm×3mm aluminum alloy, the reference electrode is a saturated calomel electrode, and the auxiliary electrode is a 2mm×2mm platinum electrode.

[0042] The electrolyte in this embodiment is a 3.5% sodium chloride solution.

[0043] The electrochemical workstation used in this embodiment is model CHI604D.

[0044] As is known from common technical knowledge, this invention can be implemented through other embodiments that do not depart from its spirit or essential characteristics. Therefore, the disclosed embodiments described above are merely illustrative in all respects and are not the only ones. All modifications within the scope of this invention or its equivalents are included in this invention.

[0045] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, systems, or computer program products. Therefore, the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0046] This invention is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0047] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0048] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of the present invention. Any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention should be covered within the protection scope of the claims of the present invention.

Claims

1. An electrochemical test device suitable for use with single double working electrode systems, characterized in that, Includes the tank, working plate, clamping plate, working electrode connecting hole, groove and clamping bolt; The tank is equipped with an electrolyte chamber inside. A working plate is connected to each side of the tank. Each working plate is connected to a clamping plate. A working electrode communication hole is provided in the center of the working plate. A clamping bolt is provided in the center of the clamping plate. The top of the tank is provided with a central electrode placement hole, and a side electrode placement hole is provided on each side of the central electrode placement hole.

2. The electrochemical testing device suitable for single and dual working electrode systems as described in claim 1, characterized in that, The upper outer side of the working plate is provided with a groove.

3. The electrochemical testing device suitable for single and dual working electrode systems as described in claim 1, characterized in that, A gasket groove is provided on the outside of the working electrode connecting hole.

4. The electrochemical testing device suitable for single and dual working electrode systems as described in claim 1, characterized in that, The working electrode pressure plate and the clamping plate are connected and assembled by four sets of adjusting bolts and adjusting nuts.

5. An electrochemical testing device suitable for single and dual working electrode systems as described in claim 4, characterized in that, The adjusting bolt and adjusting nut are made of stainless steel.

6. The electrochemical testing device suitable for single and dual working electrode systems as described in claim 1, characterized in that, The groove and the clamping plate are made of acrylic.

7. The electrochemical testing device suitable for single and dual working electrode systems as described in claim 1, characterized in that, The clamping bolt is made of polytetrafluoroethylene.

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