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A kind of method that uses walnut shell as raw material to make working electrode in three-electrode system

A three-electrode system and working electrode technology, applied in the fields of electrochemical variables of materials, analysis of materials, material analysis by electromagnetic means, etc., can solve the problems of complex production steps, achieve good conductivity, inhibit penetration, and easily control the size of electrodes Effect

Active Publication Date: 2019-12-31
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the production steps are relatively complicated, especially in non-aqueous solutions, some carriers will dissolve

Method used

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  • A kind of method that uses walnut shell as raw material to make working electrode in three-electrode system
  • A kind of method that uses walnut shell as raw material to make working electrode in three-electrode system
  • A kind of method that uses walnut shell as raw material to make working electrode in three-electrode system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] (1) immersing walnut shells in an aqueous solution to remove surface impurities, shaking, washing, and drying;

[0021] (2) Then walnut shells are cut into long strips, the length is 4cm, the width is 1cm, and the thickness is 0.3cm;

[0022] (3) heat-treat the strips of walnut shells obtained in step (2) at 800° C. for 4 hours to obtain a carbon material; the carbon material does not have a porous structure, and the BET specific surface area is 5 m 2 / g.

[0023] (4) Use the room temperature curing conductive silver glue A6 / HA6 (Guanpin Chemical Co., Ltd.) to connect the copper wire to one end of the short side of the carbon material in step (3), and place it at room temperature for 20 hours to make the silver paste solidify;

[0024] (5) Then use GD401 type one-component room temperature vulcanized silicone rubber (Chengdu Chenguang Chemical Research Institute Co., Ltd.) as an insulating material to coat to step (4) to obtain the upper surface of the carbon material ...

Embodiment 2

[0026] (1) immersing walnut shells in an aqueous solution to remove surface impurities, shaking, washing, and drying;

[0027] (2) Then walnut shells are cut into long strips, the length is 4.5cm, the width is 1cm, and the thickness is 0.3cm;

[0028] (3) heat-treat the strips of walnut shells obtained in step (2) at 800° C. for 4 hours to obtain a carbon material; the carbon material does not have a porous structure, and the BET specific surface area is 5 m 2 / g.

[0029] (4) Use room temperature curing conductive silver glue A6 / HA6 (Guanpin Chemical Co., Ltd.) to make one end of the short side of the carbon material in step (3) to connect the copper wire, and place it at room temperature for 10 hours to make the silver paste solidify;

[0030] (5) Then use GD401 type one-component room temperature vulcanized silicone rubber (Chengdu Chenguang Chemical Research Institute Co., Ltd.) as an insulating material to coat to step (4) to obtain the upper surface of the carbon materi...

Embodiment 3

[0032] (1) immersing walnut shells in an aqueous solution to remove surface impurities, shaking, washing, and drying;

[0033] (2) Then walnut shells are cut into long strips, the length is 5cm, the width is 1.5cm, and the thickness is 0.4cm;

[0034] (3) heat-treat the strips of walnut shells obtained in step (2) at 850° C. for 3 hours to obtain a carbon material; the carbon material does not have a porous structure, and the BET specific surface area is 10 m 2 / g.

[0035] (4) Use the room temperature curing conductive silver glue A6 / HA6 (Guanpin Chemical Co., Ltd.) to connect the copper wire to one end of the short side of the carbon material in step (3), and place it at room temperature for 20 hours to make the silver paste solidify;

[0036] (5) Then use GD401 type one-component room temperature vulcanized silicone rubber (Chengdu Chenguang Chemical Research Institute Co., Ltd.) as an insulating material to coat to step (4) to obtain the upper surface of the carbon materi...

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Abstract

Provided is method using walnut shells as raw materials for making a working electrode in a three-electrode system and belongs to the technical field of preparation, application and analysis and detection of carbon materials. The walnut shells are immersed in an aqueous solution to remove impurities on the surfaces, vibrating is conducted, the walnut shells are dried after washing, cut into stripsand then subjected to heat treatment at the temperature of 800DEG C-900DEG C for 2 hours-4 hours to obtain the carbon materials; copper wires are connected with one end surfaces of the short edges ofthe carbon materials through conductive silver adhesives, and the carbon materials are placed at room temperature for 10 hours-20 hours to solidify the conductive silver adhesives; vulcanized silicone rubbers are used as insulating materials to coat the upper surfaces of the carbon materials and the surfaces of the copper wires, and solidification is conducted at the room temperature for 12 hours-24 hours; exposed portions of the front sections of upper surfaces of the carbon materials are selected as the electrode, thereby preparing the working electrode. The main components of the working electrode is carbon, and the working electrode has the advantages of good conductivity, good stability, easy adjustment of electrode sizes and the like, and has important application prospects in the fields of electrochemical experiments and electrochemical analyses.

Description

technical field [0001] The invention belongs to the technical field of preparation, application and analysis and detection of carbon materials, and in particular relates to a method for making a working electrode in a three-electrode system by using walnut shells as raw materials. Background technique [0002] In the field of electrochemical analysis technology and application, the three-electrode system is currently a research system with high practical efficiency, especially in electrochemical experiments and electrochemical analysis and detection, the electrochemical analysis technology based on the three-electrode system has been widely used. Compared with the reference electrode and the counter electrode (also known as the auxiliary electrode), the working electrode is the key to the accuracy of the test, and its composition and structure are one of the main factors affecting the electrochemical performance. At present, commercial working electrodes mainly include metal...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/30
CPCG01N27/308
Inventor 刘森张彤费腾
Owner JILIN UNIV