Solid polymer fuel cell unit and its cell stack

A fuel cell unit, solid polymer technology, applied in solid electrolyte fuel cells, fuel cells, fuel cell grouping, etc., to achieve the effects of compact structure, increased output power, and improved energy utilization efficiency

Inactive Publication Date: 2004-02-25
TSINGHUA UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Aiming at the deficiencies and defects of the prior art, the object of the present invention is to provide a solid polymer fuel cell unit and its battery stack with a novel structure, on the one hand simplify the complex power generation system, effectively reduce the cost and preparation process of the battery; on the other hand On the one hand, there is no need to use complex membrane structures and metal wires to achieve complex electrical connections, reduce the internal resistance of the battery, and further increase the output voltage of the battery unit under the same output power

Method used

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  • Solid polymer fuel cell unit and its cell stack
  • Solid polymer fuel cell unit and its cell stack
  • Solid polymer fuel cell unit and its cell stack

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Embodiment Construction

[0026] The principle, structure, best implementation and examples of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0027]The solid polymer fuel cell unit provided by the present invention is composed of a separated strip membrane electrode assembly and flow field distribution plates 10 arranged on both sides of the assembly. The strip-shaped membrane electrode assembly is composed of a whole piece of solid polymer membrane 3 and n (n is an integer greater than 2) strip-shaped electrodes 1 distributed on both sides of the membrane and arranged alternately in positive and negative charges; There is a blank area 15 between each strip-shaped electrode, and the blank area has no diffusion layer and no catalytic layer, which plays a role of separating the electron flow of the electrodes. The width of the blank area is suitable between 0.1 and 2cm, such as image 3 shown. The strip electrode among the present invention is m...

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Abstract

The present invention relates to a solid polymer fuel cell unit and its cell pile, and relates to a structure design of solid polymer fuel cell using membrane electrode three-into-one component as core. The cell unit is formed from separated strip membrane electrode component and flow field distributing plates arranged at two sides of said component, and the strip membrane electrode component is formed from one whole piece of solid polymer membrane and several separated strip electrodes which are distributed at two sides of the membrane and alternatively arranged according to positive and negative polarities, and its cell pile is made up by longitudinally-arranging several blocks of cell units.

Description

technical field [0001] The invention relates to a solid polymer fuel cell, in particular to a structural design of a solid polymer fuel cell with a three-in-one membrane electrode assembly as the core, and belongs to the technical field of fuel cell electrochemistry. Background technique [0002] A fuel cell (FC) is an energy conversion device that directly converts chemical energy stored in fuel and oxidant into electrical energy in an efficient and environmentally friendly manner. Its single cell is composed of positive and negative electrodes and an electrolyte. The energy active materials of primary and secondary batteries are stored inside the battery, thus limiting the battery capacity. The positive and negative poles of the fuel cell itself do not contain active materials, but are only power generating devices. When the battery is working, the fuel and oxidant are supplied from the outside, as long as the reactants are continuously input, the fuel cell can continuous...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/1006H01M8/2465
CPCY02E60/521Y02E60/50
Inventor 毛宗强王诚徐景明谢晓峰
Owner TSINGHUA UNIV
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