发明名称 |
FUEL CELL SYSTEMS AND CONTROL METHODS |
摘要 |
The disclosure relates to fuel cell systems and methods for improving the operating efficiency and lifetime of fuel cells. In one aspect, the disclosure provides fuel cell systems including a fuel cell containing a fuel electrode, an oxidizer electrode, an electrolyte film between the fuel electrode and the oxidizer electrode, and a first catalyst layer including a first reversibly oxidized catalyst surface on a first catalyst support situated between the electrolyte film and the oxidizer electrode. In certain embodiments, the fuel cell system includes a second catalyst layer including a second reversibly oxidized catalyst surface on a second catalyst support situated between the electrolyte film and the fuel electrode. The disclosure also provides methods for operating a fuel cell in which an active catalyst surface is reversibly oxidized at the time of starting-up, shutting-down or altering the power output of the fuel cell by applying a voltage to the electrodes from a secondary energy storage cell such as a battery. The method may reduce irreversible degradation of a catalyst layer during fuel cell start-up, thereby improving fuel cell cycle stability and lifetime. |
申请公布号 |
WO2006077461(A3) |
申请公布日期 |
2006.09.21 |
申请号 |
WO2005IB03387 |
申请日期 |
2005.11.12 |
申请人 |
NISSAN MOTOR CO. LTD.;NISSAN NORTH AMERICA;TAKAICHI, SATOSHI;OGAWA, YUKI |
发明人 |
TAKAICHI, SATOSHI;OGAWA, YUKI |
分类号 |
H01M8/04;H01M4/92;H01M16/00 |
主分类号 |
H01M8/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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