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Method for preparing nanowire sheet intercalated structure supported type direct alcohol fuel cell catalyst

A fuel cell and nanowire technology, used in fuel cells, battery electrodes, nanotechnology, etc., can solve the problems of nano-scale active component Pt particle poisoning, catalyst performance degradation, and alcohol fuel transmission obstruction.

Inactive Publication Date: 2017-02-15
TIANJIN POLYTECHNIC UNIV
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Problems solved by technology

[0003] The purpose of the present invention is to solve the problems of nano-scale active component Pt particle poisoning, alcohol fuel transmission obstruction and high catalyst preparation cost in the mechanism of the existing direct alcohol fuel cell catalyst performance decline, and provide a nanowire sheet Preparation method of direct alcohol fuel cell catalyst supported by intercalation structure

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  • Method for preparing nanowire sheet intercalated structure supported type direct alcohol fuel cell catalyst

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specific Embodiment approach 1

[0008] Specific embodiment one: the preparation method of nanowire sheet intercalation structure loading type direct alcohol fuel cell catalyst in this embodiment is to realize according to the following steps: one, graphene (GO) is dispersed in sodium hydroxide solution, Then slowly add Cu(NO 3 ) 2 , then add EDA to sonicate for 30min, and finally add 35% N 2 h 4 To obtain the mixed solution, the copper salt can be Cu(NO 3 ) 2 , Cu(NO 3 ) 2 2.5H 2 O, Cu(NO 3 ) 2 ·5H 2 O; 2. Pour the mixed solution obtained in step 1 into a 50ml quartz dish, and heat it at 80°C for 30 minutes with MW; 3. Cool the product to room temperature, wash with water and ethanol, and finally centrifuge and dry at low temperature to obtain CuNWs / GO structure supported direct alcohol fuel cell catalyst carrier. The carrier can also be doped with N, P, S and other amorphous non-metals and Fe 3 o 4 graphite and other transition metal oxides. Methods The catalyst support CuNWs / GO was prepared ...

specific Embodiment approach 2

[0010] Specific embodiment two: the difference between this embodiment and specific embodiment one is: the Cu(NO 3 ) 2 is Cu(NO 3 ) 2 2.5H 2 O, Cu(NO 3 ) 2 ·5H 2 O. Its steps and parameters are the same as those in the first embodiment.

specific Embodiment approach 3

[0011] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is: the Cu(NO 3 ) 2 CuCl 2 . Other steps and parameters are the same as those in Embodiment 1 or Embodiment 2.

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Abstract

A method for preparing a nanowire sheet intercalated structure supported type direct alcohol fuel cell catalyst and relates to a method for preparing a direct alcohol fuel cell catalyst. The problems that in an existing direct alcohol fuel cell catalyst performance degradation mechanism, nanoscale catalyst Pt particles are poisoned, alcohol fuel conveying is hindered, and catalyst preparation cost is high are solved. The method includes the steps that a graphite oxide sheet serves as a carrier, according to different properties of nanowires and graphene or a modified graphene carrier, and nanowires directly grow on the carrier to form the nanowire sheet intercalated structure supported type catalyst with different adsorption layers. The catalyst prepared through the method is beneficial to alcohol fuel conveying, and has the advantages of being low in cost, high in product poison resistance, high in activity and high in stability. The catalyst is mainly used for methyl alcohol fuel cells.

Description

technical field [0001] The invention relates to a preparation method of a direct alcohol fuel cell catalyst. Background technique [0002] Direct alcohol fuel cells (DAFCs) have attracted increasing interest from scientists all over the world due to their high energy density, simple structure, and low operating temperature. However, the reasons for the performance decline of existing direct alcohol fuel cell catalysts include the poisoning of nano-scale active component Pt particles, the obstruction of alcohol fuel transmission and the high cost of catalyst preparation; taking methanol fuel as an example, methanol oxidation starts with methanol Hydrogen starts, producing CH 2 A series of intermediate products such as OH, and then further oxidized to produce formic acid and adsorbed CO ads These poisoning species will occupy the active sites of Pt (poisoning them), hindering the adsorption and oxidation of methanol. Contents of the invention [0003] The purpose of the p...

Claims

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Application Information

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IPC IPC(8): H01M4/88H01M4/90H01M8/1011B82Y30/00
CPCB82Y30/00H01M4/88H01M4/9075H01M8/1011Y02E60/50
Inventor 初园园夏晓明司源
Owner TIANJIN POLYTECHNIC UNIV
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