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Preparation method of poly(2-phenylindole) supported catalyst electrode of fuel cell

A technology for supporting catalysts and phenylindole, applied in battery electrodes, circuits, electrical components, etc., can solve the problems of deactivation of the electrochemical activity of conductive polymers and limiting the use range of catalyst carriers

Inactive Publication Date: 2016-03-09
SHANGHAI NAT ENG RES CENT FORNANOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in alkaline solution, traditional conductive polymers are prone to degradation and electrochemical activity deactivation, which limits their application range as catalyst supports.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Dissolve 0.19g of 2-phenylindole in 100mL of a mixed solution of boron trifluoride diethyl ether and diethyl ether to prepare an electrochemical solution with a molar concentration of 10mmol / L. Put the prepared electrochemical solution into the electrochemical reaction device. The device uses the matrix material carbon as the working electrode, platinum as the counter electrode, and Ag / AgCl as the reference electrode. Nitrogen is passed through the solution for 20 minutes to remove the solution. Dissolved oxygen in the medium; the constant potential method is adopted, the control potential is 0.5V (relative to the saturated calomel electrode), and the polymerization power is 65mC / cm 2 , electrodeposited poly(2-phenylindole) layers on carbon matrix materials. Using poly(2-phenylindole) modified carbon matrix material as working electrode, insert 3mmol / LH 2 PtCl 6 In an aqueous solution of +0.1mol / L KCl, under the protection of nitrogen, use a constant potential method ...

Embodiment 2

[0020] Dissolve 0.58g of 2-phenylindole in 100mL of a mixed solution of boron trifluoride diethyl ether and diethyl ether to prepare an electrochemical solution with a molar concentration of 30mmol / L. Put the prepared electrochemical solution into the electrochemical reaction device. The device uses copper matrix material as the working electrode, platinum as the counter electrode, and Ag / AgCl as the reference electrode. Nitrogen gas is passed into the solution for 20 minutes to remove the solution. Dissolved oxygen in the medium; using the constant potential method, the control potential is 1.0V (relative to the saturated calomel electrode), and the polymerization power is 70mC / cm 2 , electrodeposited a poly(2-phenylindole) layer on a copper matrix material. The copper matrix material modified by poly(2-phenylindole) was used as the working electrode, and 3mmol / LH 2 PtCl 6 In an aqueous solution of +0.1mol / L KCl, under the protection of nitrogen, use cyclic voltammetry (-0....

Embodiment 3

[0022] Dissolve 0.95g of 2-phenylindole in 100mL of a mixed solution of boron trifluoride ether and ether to prepare an electrochemical solution with a molar concentration of 50mmol / L. Put the prepared electrochemical solution into the electrochemical reaction device. The device uses iron matrix material as the working electrode, platinum as the counter electrode, and Ag / AgCl as the reference electrode. Nitrogen gas is passed into the solution for 20 minutes to remove the solution. Dissolved oxygen in the medium; using the constant potential method, the control potential is 1.5V (relative to the saturated calomel electrode), and the polymerization power is 75mC / cm 2 , electrodeposited poly(2-phenylindole) layers on iron matrix materials. Using poly(2-phenylindole) modified iron matrix material as working electrode, put 3mmol / LH 2 AuCl 6 In an aqueous solution of +0.1mol / L KCl, under the protection of nitrogen, use the constant potential method (-0.2V, relative to a saturated...

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Abstract

The invention discloses a preparation method of a poly(2-phenylindole) supported catalyst electrode of a fuel cell. The preparation method of the catalyst electrode mainly comprises three steps: preparation of an electrochemical solution, electrochemical polymerization of 2-phenylindole and electro-deposition of a catalyst. The conductive poly(2-phenylindole) as a catalyst carrier has good thermal and electrochemical properties and chemical stability and relatively high conductivity in alkaline and acidic environments, and has high adhesive force in a matrix material, so that, according to the catalyst electrode prepared by the preparation method, the dispersity of the catalyst and the durability of the electrode can be improved; and the utilization rate of a noble metal catalyst is improved.

Description

technical field [0001] The invention belongs to the technical field of fuel cell electrode materials, and in particular relates to a method for preparing a fuel cell poly(2-phenylindole)-loaded catalyst electrode. Background technique [0002] Fuel cells have many advantages such as high energy efficiency, no pollution, and rapid start-up. They have been highly valued and widely studied in the scientific and industrial circles. Commonly used fuel cell catalysts are platinum or platinum alloys (such as PtRu, PtRuOsIr, etc.), because platinum and other noble metals have empty d orbitals, which can adsorb many charged species, and have moderate strength, oxidation resistance, corrosion resistance and The ability to withstand high temperature is very strong. However, as a scarce resource, platinum is very expensive. Therefore, it is necessary to increase the utilization rate of platinum as much as possible. At present, people mainly use carbon black as the catalyst carrier, bu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/88H01M4/90
CPCH01M4/8878H01M4/9008Y02E60/50
Inventor 何丹农李玉真陈俊琛张春明金彩虹
Owner SHANGHAI NAT ENG RES CENT FORNANOTECH