The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 07, 2010
Filed:
Dec. 30, 2003
Heung-yong Ha, Seoul, KR;
Soon-jong Kwak, Seoul, KR;
Daejin Kim, Gyeongsangbuk-do, KR;
Juno Shim, Seoul, KR;
In-hwan OH, Seoul, KR;
Seong-ahn Hong, Seoul, KR;
Tae-hoon Lim, Seoul, KR;
Suk-woo Nam, Seoul, KR;
Heung-Yong Ha, Seoul, KR;
Soon-Jong Kwak, Seoul, KR;
Daejin Kim, Gyeongsangbuk-do, KR;
Juno Shim, Seoul, KR;
In-Hwan Oh, Seoul, KR;
Seong-Ahn Hong, Seoul, KR;
Tae-Hoon Lim, Seoul, KR;
Suk-Woo Nam, Seoul, KR;
Korea Institute of Science & Technology, Seoul, KR;
Abstract
The present invention, by coating the polymer electrolyte membranes for fuel cells with inorganic thin films via a PECVD method or a reactive sputtering method, reduces the methanol crossover sizably without seriously reducing the ionic conductivity of polymer electrolyte membranes, thereby, when applied to fuel cells, realizes a high performance of fuel cells. A surface of membrane can be coated with inorganic thin films made of inorganic materials, which are for example silicone oxide, titanium oxide, etc., so as to make composite polymer electrolyte membrane. For coating, plasma enhanced chemical vapor deposition method or reactive method can be used.