Direct methanol fuel cell with homogeneous assisted catalysis and porous carbon-supported platinum catalysis

A methanol fuel cell and methanol fuel technology, applied in fuel cells, battery electrodes, circuits, etc., can solve the problems of reduced loading of the main catalyst, failure to maximize the main catalyst and co-catalyst, and achieve uniform active centers and uniform distribution , to solve the effect of poisoning

Active Publication Date: 2019-12-13
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Alloying is currently the main means of promoting catalysts, but due to the conflict between the loading area of ​​the solid co-catalyst and the co-catalyst, increasing the loading of the co-catalyst will inevitably lead to a decrease in the loading of the main catalyst, so it is impossible to make the main catalyst and the co-catalyst Maximize the role of the catalyst

Method used

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  • Direct methanol fuel cell with homogeneous assisted catalysis and porous carbon-supported platinum catalysis
  • Direct methanol fuel cell with homogeneous assisted catalysis and porous carbon-supported platinum catalysis
  • Direct methanol fuel cell with homogeneous assisted catalysis and porous carbon-supported platinum catalysis

Examples

Experimental program
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Effect test

Embodiment 1

[0059] Embodiment one: (VO 2 ) 2 SO 4 Preparation of sulfuric acid solution

[0060] Take one liter of sulfuric acid with a concentration of 5wt% and heat it to 50°C; add 0.1mol of V 2 o 5 , stirred for 5h, filtered to obtain (VO 2 ) 2 SO 4 sulfuric acid solution.

Embodiment 2

[0061] Example 2: Preparation of Modified Methanol Fuel

[0062] Take one liter of sulfuric acid with a concentration of 7.5wt% and heat it to 60°C; add 0.5mol of V 2 o 5 , stirred for 5h, filtered to obtain (VO 2 ) 2 SO 4 sulfuric acid solution.

[0063] Cool to room temperature and add 1 liter of methanol aqueous solution of 50wt%, mix homogeneously and make (VO 2 ) 2 SO 4 Convert to (VO)SO 4 , to obtain the cocatalyst containing (VO)SO 4 modified methanol fuel.

Embodiment 3

[0064] Example 3: Preparation of High Concentration Modified Methanol Fuel

[0065] Take one liter of sulfuric acid with a concentration of 10wt% and heat it to 70°C; add 1mol of V 2 o 5 , stirred for 5h, filtered to obtain (VO 2 ) 2 SO 4 sulfuric acid solution.

[0066] Cool to room temperature and add 4 liters of methanol aqueous solution of 60wt%, mix homogeneously and make (VO 2 ) 2 SO 4 Convert to (VO)SO 4 , to obtain a high concentration of co-catalyst containing (VO)SO 4 modified methanol fuel.

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Abstract

The invention relates to a fuel cell technology and aims to provide a direct methanol fuel cell with homogeneous assisted catalysis and porous carbon-supported platinum catalysis. According to preparation of methanol fuel in the battery, 1 liter of sulfuric acid with a mass concentration of 5 to 10 wt% is taken and heated to 50 to 70 DEG C; 0.1 to 1 mol of V2O5 is added, reacting under stirring for 5 h is carried out, and after filtering, a (VO2)2SO4 sulfuric acid solution is obtained; after cooling to room temperature, 1 to 4 liters of methanol aqueous solution with a mass concentration of 50to 60 wt% are added, (VO2)2SO4 changes to (VO)SO4 through uniform mixing, and modified methanol fuel containing a cocatalyst (VO)SO4 is obtained. Oxidation and carbon monoxide poisoning on the surface of a platinum catalyst in the electrochemical oxidation process of methanol are avoided through the assisted catalytic effect of VO<2+> ions; and the performance of direct methanol fuel cell is improved through the synergy of the high activity of carbon-loaded platinum and the assisted catalytic effect of liquid phase VO<2+> ions. (VO)SO4 can be recycled, the cost can be effectively reduced, andthe application and the popularization of methanol fuel cells are facilitated.

Description

technical field [0001] The invention belongs to the technical field of fuel cells, in particular to a direct methanol fuel cell with homogeneous auxiliary catalysis and porous carbon-supported platinum catalysis. Background technique [0002] A fuel cell is an energy conversion device that directly converts chemical energy stored in fuel into electrical energy. Because it does not need to go through the Carnot cycle, it has high energy density and energy conversion efficiency. It is a new type of green energy technology. In recent years, due to innovative breakthroughs in fuel cell (Fuel Cell) technology, coupled with multiple pressures such as environmental protection issues and energy shortages, governments of various countries and industries such as automobiles, electric power, and energy have gradually attached importance to the development of fuel cell technology. Fuel cell is a new power generation technology with high efficiency, low pollution and diversified energy s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/1011H01M4/92
CPCH01M4/926H01M8/1011Y02E60/50
Inventor 刘宾虹李洲鹏
Owner ZHEJIANG UNIV
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