Bipolar plate for proton exchange membrane fuel cell

A proton exchange membrane and fuel cell technology, applied in the direction of fuel cells, fuel cell components, battery electrodes, etc., can solve the problem that the conductivity is difficult to meet the increasing requirements of bipolar plates, reduce battery performance and life, Increase the internal resistance of the battery and other issues to achieve the effect of saving valuable modified materials, improving performance and life, and improving performance

CN101667647AInactive Publication Date: 2010-03-10SUNRISE POWER CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2010-03-10
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a bipolar plate for a proton exchange membrane fuel cell, which is a metal bipolar plate with an air or cooling liquid passage formed by a bulge and a groove. The surface of the groove of the metal bipolar plate with the air or cooling liquid passage formed by the bulge and the groove is provided with a corrosion-resistant protective layer, and the top surface of the bulgeis provided with a surface modification layer for improving conductivity and corrosion resistance. The invention has the advantages that the surface modification layer has good binding force, compaction and high corrosion resistance and conductivity and can greatly enhance the property and prolong the service life of the bipolar plate in PEMFC, has very economic processing process and mature technology and can effectively reduce the preparing cost of the bipolar plate, only carry out the conductive and corrosion-resistant modification on a platform of the bipolar plate, save a large quantity of valuable modification materials and reduce the cost of the bipolar plate.
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