发明授权
- 专利标题: Polymer electrolyte fuel cell provided with a tightening pressure
- 专利标题(中): 聚合物电解质燃料电池具有紧固压力
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申请号: US11379239申请日: 2006-04-19
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公开(公告)号: US08012646B2公开(公告)日: 2011-09-06
- 发明人: Kazuhito Hatoh , Hiroki Kusakabe , Hideo Ohara , Susumu Kobayashi , Nobuhiro Hase , Shinsuke Takeguchi , Teruhisa Kanbara
- 申请人: Kazuhito Hatoh , Hiroki Kusakabe , Hideo Ohara , Susumu Kobayashi , Nobuhiro Hase , Shinsuke Takeguchi , Teruhisa Kanbara
- 申请人地址: JP Osaka
- 专利权人: Panasonic Corporation
- 当前专利权人: Panasonic Corporation
- 当前专利权人地址: JP Osaka
- 代理机构: Panitch Schwarze Belisario & Nadel LLP
- 优先权: JP2002-085277 20020326
- 主分类号: H01M2/38
- IPC分类号: H01M2/38 ; H01M2/40 ; H01M8/24 ; H01M2/08 ; H01M2/14
摘要:
The durability of a polymer electrolyte fuel cell is very significantly improved by using a tightening pressure of about 2 to 4 kgf/cm2 of area of electrode; or a tightening pressure of about 4 to 8 kgf/cm2 of contact area between electrode and separator plate; or by selecting a value not exceeding about 1.5 mS/cm2 for the short-circuit conductivity attributed to the DC resistance component in each unit cell; or by selecting a value not exceeding about 3 mA/cm2 for the hydrogen leak current per area of electrode of each MEA. Further, in a method of manufacturing or an inspection method for a polymer electrolyte fuel cell stack, fuel cells having high durability can be efficiently manufactured by removing such MEAs or unit cells using such MEAs or such cell stacks having short-circuit conductivity values and/or hydrogen leak current values exceeding predetermined values, respectively.
公开/授权文献
- US20060251944A1 Polymer electrolyte fuel cell 公开/授权日:2006-11-09