发明授权
US08722284B2 Synthesis of stable and durable catalyst composition for fuel cell
有权
燃料电池稳定耐用的催化剂组合物的合成
- 专利标题: Synthesis of stable and durable catalyst composition for fuel cell
- 专利标题(中): 燃料电池稳定耐用的催化剂组合物的合成
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申请号: US13499068申请日: 2010-09-30
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公开(公告)号: US08722284B2公开(公告)日: 2014-05-13
- 发明人: Stephen A. Campbell , Natalia Kremliakova
- 申请人: Stephen A. Campbell , Natalia Kremliakova
- 申请人地址: DE Stuttgart US MI Dearborn
- 专利权人: Daimler AG,Ford Motor Company
- 当前专利权人: Daimler AG,Ford Motor Company
- 当前专利权人地址: DE Stuttgart US MI Dearborn
- 代理机构: Patent Central LLC
- 代理商 Stephan A. Pendorf
- 国际申请: PCT/EP2010/005955 WO 20100930
- 国际公布: WO2011/038907 WO 20110407
- 主分类号: H01M4/04
- IPC分类号: H01M4/04
摘要:
Provided is a catalyst composition comprising an intermetallic phase comprising Pt and a metal selected from either Nb or Ta, and a dioxide of the metal. Also provided is a low temperature method for making such compositions that results in the formation of intermetallic phase with small crystallite size and thus greater mass activity. In particular, a Pt3Nb—NbO2 catalyst composition can be prepared that is useful as a fuel cell catalyst and offers a very stable chemical substrate along with good electrode activity and remarkable durability. The use of Pt3Nb—NbO2 can considerably prolong fuel cell lifetime by reducing Pt dissolution levels and subsequent voltage losses. The Pt3Nb—NbO2 can be used in the cathode and/or anode of a fuel cell.