Invention Grant
- Patent Title: Cathode for fuel cell
- Patent Title (中): 燃料电池阴极
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Application No.: US12682868Application Date: 2008-10-08
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Publication No.: US08460836B2Publication Date: 2013-06-11
- Inventor: Hyuk Kim , Won-Ho Lee , Chang-Song Lee , Seong-Uk Jeong , Sang-Hyun Lee
- Applicant: Hyuk Kim , Won-Ho Lee , Chang-Song Lee , Seong-Uk Jeong , Sang-Hyun Lee
- Applicant Address: KR Seoul
- Assignee: LG Chem, Ltd.
- Current Assignee: LG Chem, Ltd.
- Current Assignee Address: KR Seoul
- Agency: McKenna Long & Adridge, LLP
- Priority: KR10-2007-0104206 20071016
- International Application: PCT/KR2008/005899 WO 20081008
- International Announcement: WO2009/051368 WO 20090423
- Main IPC: H01M8/24
- IPC: H01M8/24

Abstract:
A cathode for a fuel cell includes a gas diffusion layer contacting with a separator having a channel and a catalyst layer interposed between the gas diffusion layer and an electrolyte membrane. The catalyst layer of the cathode has two portions with different water-repelling properties, and a portion of the catalyst layer that does not face a channel has a higher water-repelling property than a portion that faces a channel. This cathode controls water-repelling property of the catalyst layer differently according to locations, so it is possible to keep an amount of moisture in an electrode in a suitable way and to restrain generation of flooding, thereby improving the performance of the cell.
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