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A kind of self-supporting electrode and its preparation method and use

A self-supporting electrode and electrode technology, applied in the direction of electrodes, battery electrodes, circuits, etc., can solve the problems of high cost, poor industrialization prospects, and long process, and achieve the effects of not easy to fall off, excellent performance, and simplified preparation methods

Active Publication Date: 2021-08-24
THE NAT CENT FOR NANOSCI & TECH NCNST OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that the process is long, the cost is high, and the industrialization prospect is not good.

Method used

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  • A kind of self-supporting electrode and its preparation method and use
  • A kind of self-supporting electrode and its preparation method and use
  • A kind of self-supporting electrode and its preparation method and use

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] This embodiment provides a method for preparing a self-supporting electrode, the specific method of which is:

[0061] (1) electroplating and growing polypyrrole coating film on carbon cloth, specifically comprising the following steps:

[0062] (A) 3.0g anhydrous sodium perchlorate is dissolved in 200mL deionized water, obtains sodium perchlorate aqueous solution;

[0063] (B) Add 10 mL of pyrrole monomer into the sodium perchlorate solution obtained in step (A), and stir until clear and transparent to obtain pyrrole-sodium perchlorate aqueous solution;

[0064] (C) Place the pyrrole-sodium perchlorate aqueous solution gained in step (B) in the electrolytic cell, the carbon cloth is used as the working electrode, the silver / silver chloride electrode is used as the reference electrode, and the platinum plate electrode is used as the counter electrode, at 0.5V voltage Under electrolysis for 500s, a polypyrrole film coated with carbon cloth was obtained;

[0065] (D) th...

Embodiment 2

[0078] This embodiment provides a method for preparing a self-supporting electrode, the specific method of which is:

[0079] (1) electroplating and growing polypyrrole coating film on carbon cloth, specifically comprising the following steps:

[0080] (A) 5.0g anhydrous sodium perchlorate is dissolved in 100mL deionized water, obtains sodium perchlorate aqueous solution;

[0081] (B) Add 6 mL of pyrrole monomer into the sodium perchlorate solution obtained in step (A), and stir until clear and transparent to obtain pyrrole-sodium perchlorate aqueous solution;

[0082] (C) Place the pyrrole-sodium perchlorate aqueous solution gained in step (B) in the electrolytic cell, the carbon cloth is as the working electrode, the silver / silver chloride electrode is as the reference electrode, and the platinum plate electrode is as the counter electrode, at 1.0V voltage Under electrolysis for 50s, a polypyrrole film coated with carbon cloth was obtained;

[0083] (D) the obtained polypy...

Embodiment 3

[0093]This embodiment provides a method for preparing a self-supporting electrode, the specific method of which is:

[0094] (1) electroplating and growing polypyrrole coating film on carbon cloth, specifically comprising the following steps:

[0095] (A) 1.0g of anhydrous sodium perchlorate is dissolved in 20mL of deionized water to obtain an aqueous solution of sodium perchlorate;

[0096] (B) Add 10 mL of pyrrole monomer into the sodium perchlorate solution obtained in step (A), and stir until clear and transparent to obtain pyrrole-sodium perchlorate aqueous solution;

[0097] (C) Pyrrole-sodium perchlorate aqueous solution obtained in step (B) is placed in the electrolytic cell, the carbon cloth is used as the working electrode, the saturated calomel electrode is used as the reference electrode, and the carbon rod is used as the counter electrode, and electrolysis is performed at a voltage of 0.5V for 500s , to obtain a polypyrrole film wrapped in carbon cloth;

[0098]...

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Abstract

The invention provides a self-supporting electrode and its preparation method and application. The self-supporting electrode includes a conductive base and a metal carbonitride electrode material supported on the conductive base. The preparation method comprises: (1) growing a polypyrrole film on a conductive substrate to obtain a polypyrrole-coated conductive substrate; (2) growing a metal precursor on the polypyrrole-coated conductive substrate described in step (1), obtaining an electrode precursor; (3) calcining and carbonizing the electrode precursor in step (2) to obtain the self-supporting electrode. The self-supporting electrode is used for electrocatalytic water splitting, electrocatalytic oxygen reduction or lithium ion battery. The self-supporting electrode provided by the invention has high stability, high electron transfer efficiency, and high catalytic efficiency; the preparation method provided by the invention simplifies the preparation method of the synthesized self-supporting electrode, and improves the catalytic efficiency of the self-supporting electrode, ensuring that the product excellent performance.

Description

technical field [0001] The invention belongs to the field of nanometer material preparation, and in particular relates to a self-supporting electrode and a preparation method thereof. Background technique [0002] Due to their excellent stability and electrical conductivity, metal carbonitrides have attracted extensive attention in the field of catalysis, especially in the fields of electrocatalytic water splitting, electrocatalytic oxygen reduction, and lithium-ion batteries. However, the synthesis of metal carbonitrides, especially the methods for in situ preparation on electrodes are still very few. Currently, most metal carbonitride electrodes are prepared by attaching powdered catalysts to the electrode surface by spin-coating. Conductive polymers are usually introduced as binders for catalysts and electrode substrates during electrode preparation. This traditional electrode preparation method mainly has the following disadvantages: 1) The microscopic morphology of th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/36H01M4/583H01M4/62H01M10/0525C25B11/052C25B11/075C25B1/04
CPCC25B1/04C25B11/075H01M4/362H01M4/583H01M4/62H01M10/0525Y02E60/10Y02E60/36
Inventor 朴玲钰曹爽吴志娇伏兵于海宁
Owner THE NAT CENT FOR NANOSCI & TECH NCNST OF CHINA