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Air cathode-based miniature direct formic acid fuel cell

A formic acid fuel cell, air cathode technology, applied in fuel cells, fuel cell additives, fuel cell heat exchange, etc. Formic acid corrosion performance is durable, overcomes the effect of being easily corroded by formic acid, and reduces the internal resistance of the battery

Inactive Publication Date: 2011-07-27
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the electrode plate is made of graphite, the material is fragile, difficult to process, and limited in pressure capacity. At the same time, the entire battery needs additional auxiliary equipment to supply fuel and oxygen, which will inevitably affect the efficiency and practicability of the entire battery.

Method used

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  • Air cathode-based miniature direct formic acid fuel cell
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  • Air cathode-based miniature direct formic acid fuel cell

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] Catalyst preparation method, comprises the steps:

[0055] (1) Weigh 83.4 mg metal precursor PdCl 2 , add 0.2ml concentrated hydrochloric acid (mass concentration 36%), join in the flask that fills 15ml ethylene glycol after ultrasonic dissolution, the power of ultrasonic wave is 150W, and frequency is 40KHz, obtains component A;

[0056] (2) 200mg XC-72R (conductive carbon black produced by U.S. Cabot Company, code-named: Vulcan XC-72R) joins in the 50ml flask of filling 10ml ethylene glycol, ultrasonic dispersion obtains component B; The power of ultrasonic wave is 150W, The frequency is 40KHz.

[0057] (3) Weigh 1035 mg of sodium citrate and add it to a 50 ml beaker containing 15 ml of ethylene glycol to obtain component C according to the molar ratio of sodium citrate to metal precursor being 7.5:1;

[0058] (4) Add component C dropwise to component B to obtain component D;

[0059] (5) Add component A dropwise to component D to obtain component E.

[0060] (6) ...

Embodiment 2

[0062] Similar to the preparation of Pd / C in Example 1, there are the following differences: the metal precursor H used in component A 2 PtCl 6 ·6H 2 O130mg, the prepared catalyst is marked as Pt / C.

Embodiment 3

[0064] Similar to the preparation of Pd / C in Example 1, there are the following differences: the metal precursor H used in component A 2 PtCl 6 ·6H 2 O 80mg, PdCl 2 30mg, the prepared catalyst is marked as PdPt / C. image 3 Show the catalytic performance of different catalysts to formic acid.

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Abstract

The invention discloses an air cathode-based miniature direct formic acid fuel cell. A seal washer is respectively arranged inside an anode collector plate and a cathode collector plate; a membrane electrode is arranged between the two seal washers; one side, positioned on the cathode collector plate, of the membrane electrode is provided with a cathode gas diffusion layer; one side, positioned on the anode collector plate, of the membrane electrode is provided with an anode diffusion layer; an end plate is arranged outside the anode collector plate; a liquid storage cavity is reserved between the anode collector plate and the end plate; and a seal washer is arranged between the anode collector plate and the liquid storage cavity as well as between the liquid storage cavity and the end plate. In the cell, formic acid serves as a fuel; a proton exchange membrane on which a catalyst is sprayed serves as the membrane electrode; an air electrode is adopted directly; the structure is simple; the cell is convenient to detach; cell weight is reduced; reaction heat is collected effectively; the volatilization of the formic acid is reduced by a relatively closed system; and different discharge requirements of equipment on a power supply can be met by adopting different catalysts.

Description

technical field [0001] The invention relates to the field of fuel cells, in particular to an air cathode-based miniature direct formic acid fuel cell and its anode catalyst. Background technique [0002] With the continuous entry of a large number of new electronic products such as mobile phones, notebook computers, and personal digital devices (PDAs) into people's lives, people's requirements for power sources have increased rapidly, and the commonly used primary and secondary batteries have been unable to meet people's needs. demand. As a device that can directly convert chemical energy into electrical energy, fuel cells have significant advantages such as high efficiency, environmental protection, rapid start-up, and high mass-to-energy ratio compared with ordinary batteries. Therefore, it is of great significance to research and develop new power sources based on fuel cells. Current research focuses on proton exchange membrane fuel cells (PEMFC) and direct methanol fue...

Claims

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Application Information

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IPC IPC(8): H01M8/10H01M8/04H01M4/86H01M4/90B01J23/44B01J23/42H01M8/04007H01M8/1004
CPCY02E60/521Y02E60/50
Inventor 廖世军洪平黄新建钟轶良罗凡
Owner SOUTH CHINA UNIV OF TECH
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