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Direct methanol fuel cell anode catalyzer as well as preparation method and application thereof

A methanol fuel cell and catalyst technology, applied in battery electrodes, chemical instruments and methods, physical/chemical process catalysts, etc., to achieve the effect of easy operation, low cost, and promotion of methanol oxidation

Inactive Publication Date: 2008-05-14
SOUTH CHINA NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the use of platinum hydrogen tungsten bronze as an anode catalyst for alkaline direct methanol fuel cells has not been reported yet.

Method used

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  • Direct methanol fuel cell anode catalyzer as well as preparation method and application thereof
  • Direct methanol fuel cell anode catalyzer as well as preparation method and application thereof
  • Direct methanol fuel cell anode catalyzer as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Dissolve chloroplatinic acid and sodium tungstate in 0.55mol / L sulfuric acid at a molar ratio of 1:10, freshly make a uniform light yellow solution I, and dissolve chloroplatinic acid with the same molar concentration as I in 0.55mol / L of sulfuric acid solution II. Before electrodepositing the catalyst, the glassy carbon electrode should be pretreated by using 5# metallographic sandpaper and 0.5μm Al 2 o 3 After polishing with polishing powder, wash with twice distilled water, 2 SO 4 In the solution, 50 cyclic voltammetry scanning activations were carried out in the range of -0.65V to 0.5V, and the scanning speed was 50mV / s.

[0031] Then place the pretreated glassy carbon electrode in the above-mentioned solution I and chloroplatinic acid sulfuric acid solution II respectively, and scan 60 times of cyclic voltammetry in the potential range of -0.65 ~ 0.2V to prepare platinum evenly dispersed on the glassy carbon electrode. based composite catalyst Pt-H x WO 3 / G...

Embodiment 2

[0035] This embodiment is the same as Embodiment 1 except for the following features: carbon nanotubes are used instead of glassy carbon electrodes, and cyclic voltammetry scans are performed 20 times within the potential range of -0.65-0.45V.

Embodiment 3

[0037] This embodiment is the same as Embodiment 1 except for the following features: activated carbon is used instead of glassy carbon electrodes, and cyclic voltammetry scans are performed 40 times within the potential range of -0.65 to 0.45V.

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Abstract

The invention discloses an anode catalyst for direct methanol fuel cells, belonging to platinum based composite catalyst field. The basic structural formula of the invention is Pt-HxWO3 (0 B01J 23 / 652 H01M 4 / 92 2 6 1 2007 / 12 / 7 101176844 2008 / 5 / 14 000000000 South China Normal University Guangzhou 510630 Yang Hongyan Li Weishan yangxiao song 44245

Description

technical field [0001] The invention relates to fuel cell catalyst technology, in particular to a direct methanol fuel cell anode catalyst and its preparation method and application. Background technique [0002] A fuel cell is an efficient and clean power generation device that directly and continuously converts chemical energy into electrical energy, using small organic molecules such as hydrogen and methane as fuel. However, due to the great safety hazards in the storage, transportation and use of hydrogen, and the high cost of establishing a complete transportation, transit, and consumption system, it is highly feasible to replace hydrogen with liquid fuels as fuel. Direct methanol fuel cells using methanol as fuel have the advantages of high battery mass (or volume) energy density, low environmental pollution, and low operating temperature, and have broad development prospects in the fields of laptop computers and electric vehicles. [0003] At ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/652H01M4/92
CPCY02E60/50
Inventor 杨红艳李伟善
Owner SOUTH CHINA NORMAL UNIVERSITY