To provide a solid polymer fuel cell having a sufficient startup property from a low temperature state under a freezing point.
An oxidant gas diffusion layer 48 of an oxidant electrode is formed while reaching an interface K with an oxidant gas catalyst layer 44 of that oxidant electrode and has a plurality of through-holes 70 for producing, along an inner circumferential edge, an ice block IB for condensing fine ice particles IA generated on the interface K between the oxidant gas catalyst layer 44 and the oxidant gas diffusion layer 48 through sublimation by freezing water produced from the oxidant gas catalyst layer 44 through oxidation reaction under a freezing point. The ice block IB generated along the inner circumferential edge of the through-holes 70 absorbs the fine ice particles IA generated on the interface K between the oxidant gas catalyst layer 44 and the oxidant gas diffusion layer 48 through its sublimation, thereby continuously supplying an oxidant gas into the oxidant gas catalyst layer 44 while suppressing clogging with ice on that interface K, so that a startup property of a solid polymer fuel cell in a low temperature state under the freezing point can be remarkably improved.
HASEGAWA IKUJI
HIRAMITSU YUSUKE
SATO TERUYUKI
| JP2005174768A | 2005-06-30 | |||
| JP2009283244A | 2009-12-03 | |||
| JP2010108914A | 2010-05-13 | |||
| JP2004030959A | 2004-01-29 | |||
| JP2008066208A | 2008-03-21 | |||
| JP2007328935A | 2007-12-20 | |||
| JP2005174768A | 2005-06-30 | |||
| JP2009283244A | 2009-12-03 | |||
| JP2010108914A | 2010-05-13 |
Kojiro Ikeda