Integrated bipolar plate used for solid oxide fuel cell

A solid oxide and fuel cell technology, applied in fuel cells, circuits, electrical components, etc., can solve problems such as increasing the difficulty of manufacturing, hindering the development of fuel cells, reducing the efficiency of fuel cells, etc., and achieving the effect of surface treatment optimization

CN107293766APending Publication Date: 2017-10-24上海中弗新能源科技股份有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2017-10-24

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Abstract

The invention discloses an integrated bipolar plate used for a solid oxide fuel cell. The integrated bipolar plate comprises a substrate and a surface coating; a gas channel is formed in the surface of the substrate; and long-waist-shaped holes are formed in the edge of the substrate for allowing homopolar gas to come in and go out. By integrating parts, such as a positive electrode gas channel frame, a negative electrode gas channel frame, a partition plate, nickel foam, a silver net, a gas channel plate and the like, on a metal plate named as the bipolar plate, design optimization is performed in structure, and optimization is also performed in the aspects of material selection, processing process, surface treatment and the like.
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Description

Technical field

[0001] The invention relates to fuel cell technology, specifically an integrated bipolar plate for solid oxide fuel cells. Background technique

[0002] The connection between solid oxide fuel cell single cells (hereinafter referred to as "bipolar plate") has always been a difficulty in high-temperature fuel cell stack manufacturing technology due to constraints on processing technology and material costs. The bipolar plate is one of the core components of the fuel cell stack system. Its mass accounts for approximately 80% of the entire stack system, and its manufacturing cost accounts for approximately 45% of the total manufacturing cost of the entire fuel cell stack system. The bipolar plate mainly consists of two parts: a substrate and a flow field; among them, the main function of the substrate is to conduct electricity and collect electricity, and the main function of the flow field is to block the gases at the anode and cathode and guide the flow of gas...

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Embodiment Construction

[0017] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0018] See figure 1 , An integrated bipolar plate for solid oxide fuel cells, comprising a substrate 3 and a surface coating. The surface of the substrate 3 is provided with a gas flow channel 1, and the edge of the substrate 3 is provided with a long waist hole 2 for Gas in and out of the same pole.

[0019] The conductivity of the substrate 3 and the coating is greater than 1S·cm -1 . The coating is a layer of metal oxide covering the ...