Application of EDTA (Ethylene Diamine Tetraacetic Acid) to electrolyte addictive in direct formic acid fuel cell

A formic acid fuel cell, electrolyte additive technology, applied in fuel cells, solid electrolyte fuel cells, circuits, etc., can solve the problem of not being able to reduce the decomposition rate of formic acid at the same time, so as to improve electrocatalytic activity and stability, improve performance, inhibit The effect of self-decomposition

Inactive Publication Date: 2012-01-18
NANJING NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, many DFAFC electrolyte additives can only solve one of the problems, and cannot simultaneously reduce the decomposition rate of formic acid on the Pd / C catalyst and promote the electrocatalytic oxidation of formic acid by the Pd catalyst

Method used

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  • Application of EDTA (Ethylene Diamine Tetraacetic Acid) to electrolyte addictive in direct formic acid fuel cell
  • Application of EDTA (Ethylene Diamine Tetraacetic Acid) to electrolyte addictive in direct formic acid fuel cell
  • Application of EDTA (Ethylene Diamine Tetraacetic Acid) to electrolyte addictive in direct formic acid fuel cell

Examples

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Effect test

example 1

[0022] Example 1, the supporting electrolyte is H 2 SO 4 Aqueous solution, the concentration of formic acid is 2mol L -1 , adding electrolyte additive EDTA, the concentration is 2.5×10 -4 mol L -1 .

[0023]

example 2

[0024] Example two, the supporting electrolyte is HClO 4 Aqueous solution, the concentration of formic acid is 20 mol L -1 , add the electrolyte additive EDTA disodium salt, the concentration is 0.1mol L -1 .

[0025]

example 3

[0026] Example three, the supporting electrolyte is LiClO 4 Aqueous solution, the concentration of formic acid is 0.1mol L -1 , add the electrolyte additive EDTA dipotassium salt, the concentration is 1×10 -8 mol L -1 .

[0027]

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Abstract

The invention discloses application of ethylene diamine tetraacetic acid or salts thereof to an electrolyte addictive in a direct methanol fuel cell. A certain amount of ethylene diamine tetraacetic acid (EDTA) or salt compounds thereof are added in DFAFC (Direct Formic Acid Fuel Cell) electrolyte containing methanoic acid to obtain the DFAFC electrolyte with high performance; and the decomposition of formic acid on a Pd catalyst can be completely inhibited, the electrocatalytic activity and the stability to formic acid oxidation caused by the Pd catalyst can be remarkably improved simultaneously and the performance of the direct methanol fuel cell is improved.

Description

technical field [0001] The present invention relates to a kind of application of EDTA in direct formic acid fuel cell, be specifically related to a kind of purposes that EDTA is used for electrolyte additive in direct formic acid fuel cell, by adding a small amount of EDTA or its salt compound in electrolyte, can improve Performance of direct formic acid fuel cells. Background technique [0002] In the past 40 years, although proton exchange membrane fuel cells using hydrogen as fuel have been developed for many years, they have not yet been commercialized due to problems such as high price, no suitable hydrogen source, and freezing of Nafion membranes at sub-zero temperatures. Later, people began to study the direct methanol fuel cell (DMFC) which uses methanol as hydrogen instead of fuel. It has the advantages of convenient fuel storage, transportation and use, simple structure, small size, and high specific energy. However, during the research process, it was gradually d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/10H01M8/1018
CPCY02E60/521Y02E60/50
Inventor 唐亚文李焕芝陈煜陆天虹
Owner NANJING NORMAL UNIVERSITY
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