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Air self-breathing type micro-direct alcohol fuel cell structure and making method

A methanol fuel cell, self-breathing technology, used in fuel cells, circuits, electrical components, etc., can solve problems such as battery power consumption, and achieve the effects of improving performance, preventing leakage, and reducing contact resistance

Inactive Publication Date: 2005-03-09
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the cathode is directly in contact with the air, the anode uses a micropump to circulate methanol, which not only adds micropumps, methanol sensors and other components to the system, but also consumes battery power.

Method used

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  • Air self-breathing type micro-direct alcohol fuel cell structure and making method
  • Air self-breathing type micro-direct alcohol fuel cell structure and making method
  • Air self-breathing type micro-direct alcohol fuel cell structure and making method

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Embodiment Construction

[0048] Using the existing membrane electrode (MEA) preparation technology, such as smearing method, rotating pressure method, etc., first prepare the membrane electrode (MEA) without current collecting net, and then hot press the current collecting net to the surface of the membrane electrode (MEA). On the surface. The current collecting net and the diffusion layer of the electrode can also be integrated, such as: the diffusion layer slurry is directly applied to the current collecting net to form a diffusion layer containing the current collecting net, which can reduce the material transmission resistance and significantly reduce the internal resistance of the battery. The current collecting net can adopt metal nets with small thickness, such as platinum nets, gold nets, iron nets, stainless steel nets, nickel nets, titanium nets, metal nets with plating, etc.

[0049] The present invention can connect different numbers of cells in series or in parallel according to different...

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Abstract

This invention relates to a structure of a direct alcohol fuel battery and its manufacturing method. It is composed of baffle plates, sealing pieces, end plates and bolt devices characterizing that the sealing pieces are set at both sides of the baffle plate, a membrane pole is at the outside of the sealing pieces, the end plate is out of the membrane pole and the bolt device is set around the end plate. This invention makes one end of the flow collector net to completely contact with the anode of a single cell, the other is contacted with cathode of an adjacent single cell to hot-press the membrane with the flow collector anode, cathode and electrolyte to form a membrane pole so as to get a battery set.

Description

technical field [0001] The invention relates to fuel cell technology, in particular to a structure and a manufacturing method of a direct alcohol fuel cell. Background technique [0002] In recent years, portable electronic products have developed rapidly, but the various batteries currently on the market are expensive, have low energy density, short service life, and there are various waste disposal problems. Therefore, there is an urgent demand for mobile power supplies with power ranging from several watts to hundreds of watts, high energy density, long service life, and pollution-free. [0003] A fuel cell is an electrochemical reaction device that directly converts the chemical energy of fuel and oxidant into electrical energy. Due to no pollution, no noise, high energy conversion efficiency, and long service life during power generation, it has broad application prospects in the fields of national defense communications, aerospace transportation, and mobile power supp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/0273H01M8/0297H01M8/1011
CPCY02E60/50Y02P70/50
Inventor 孙公权赵钢刘建国陈利康赵锋良辛勤
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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