Humidity preservation composite film used for proton exchange film fuel battery and its preparation method
Title：
Humidity preservation composite film used for proton exchange film fuel battery and its preparation method
Application Number：
 02103832
Application Date：
 2002/03/29
Announcement Date：
 2003/09/17
Pub. Date：
Publication Number：
 1442913
Announcement Number：
 1224119
Grant Date：
 2005-10-19
Granted Pub. Date：
 2005-10-19
ApplicationType：
 Invention
State/Country：
 11[China|beijing]
IPC：
 H01M 2/14, H01M 4/94, H01M 4/88
Applicant(s)：
 Tsinghua Univ.
Inventor(s)：
 Mao Zongqiang, Wang Cheng, Xu Jingming
Key Words：
 Humidity preservation, composite film, proton exchange film, fuel battery, preparation
Abstract：
 A self-moisture-retaining composite film used for fuel cell of proton-exchange film structure is made up by combining a proton-exchange film and a coating layer with moisture-retaining function, and the coating layer is added with inorganic substance or its oxide powder to organic solution of organic substance with the same composition as the organic film and then to coat in on one side or both sides of the organic film. Its preparation method is to use the organic film with proton exchanging ability as matrix, grind the inorganic substance or its oxide into powder of 0.1-10 micron and to mix it uniformly with the organic solvent and the organic substance with the same composition as the organic film to obtain a slurry, and the self-moisture-retaining composite film can be produced by coating the slurry on the surface of the organic film matrix and followed by drying and solidifying.
Claim：
Priority：
PCT：
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2008-4-17
  Selected patents owned by Tsinghua University filed in 2005 are loaded.
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