发明申请
- 专利标题: Fuel cell collector plates containing grafted polyolefins
- 专利标题(中): 含有接枝聚烯烃的燃料电池收集板
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申请号: US10562480申请日: 2004-04-04
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公开(公告)号: US20060147781A1公开(公告)日: 2006-07-06
- 发明人: Yuqi Cai , Sassan Hojabr , John Fisher
- 申请人: Yuqi Cai , Sassan Hojabr , John Fisher
- 国际申请: PCT/CA04/00976 WO 20040404
- 主分类号: H01M8/02
- IPC分类号: H01M8/02 ; H01B1/24 ; C08J5/00
摘要:
A conductive composition for fuel cell collector plates and the molding methods thereof are provided. The molding composition includes a polymer resin and conductive fillers, wherein the polymer resin is a polymer blend comprising (1) from about 10 to 100 wt %, preferably from about 50 to about 100 wt % of a grafted polyolefin or a blend of grafted polyolefins and (2) from 0 to about 90 wt %, preferably from about 0 to about 50 wt % of at least one other thermoplastic polymer having a melting point below 280° C. One type of or a combination of different types of highly conductive fillers are selected from carbon, graphite, metallic fillers and mixtures thereof. The polymer resin and conductive fillers are blended into a homogeneous mixture and molded into a collector plate. A preferred method of injection molding and a preferred method of injection-compression molding are provided to mold the composition into the shape of a fuel cell collector plate having a volume resistivity of not more than about 0.1 ohm.cm. The collector plate is particularly suitable for, but not limited to, use in polymer electrolyte membrane fuel cells.
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