Title:
MEMBRANE ELECTRODE ASSEMBLY FOR FUEL CELL AND FUEL CELL
Document Type and Number:
WIPO Patent Application WO/2008/023773
Kind Code:
A1
Abstract:
A membrane electrode assembly for fuel cell that maintains the moistness of polymeric
electrolyte membrane even under low humidification condition or high temperature
condition, or in high current density region, exhibiting excellent output performance.
Further, there is provided a fuel cell including the above assembly.The membrane
electrode assembly for fuel cell and fuel cell is one including a polymeric electrolyte
membrane containing at least one type of proton conductive polymer; a fuel electrode
disposed on one major surface of the polymeric electrolyte membrane; and an oxidizer
electrode disposed on the other major surface of the polymeric electrolyte membrane,
characterized in that the polymeric electrolyte membrane exhibits different
hydrophilicities on the two opposite major surfaces thereof, and that when the
side with relatively high hydrophilicity is referred to as a first surface while
the side with relatively low hydrophilicity is referred to as a second surface,
the fuel electrode is disposed on the first surface of the polymeric electrolyte
membrane and the oxidizer electrode disposed on the second surface thereof.
The provided fuel cell is one having the above assembly.
Inventors:
KAWAHARA, Mitsuyasu (1 Toyota-cho, Toyota-sh, Aichi 71, 4718571, JP)
川原 光泰 (〒71 愛知県豊田市トヨタ町１番地 トヨタ自動車株式会社内 Aichi, 4718571, JP)
TAKAMI, Masayoshi (1 Toyota-cho, Toyota-sh, Aichi 71, 4718571, JP)
高見 昌宜 (〒71 愛知県豊田市トヨタ町１番地 トヨタ自動車株式会社内 Aichi, 4718571, JP)
川原 光泰 (〒71 愛知県豊田市トヨタ町１番地 トヨタ自動車株式会社内 Aichi, 4718571, JP)
TAKAMI, Masayoshi (1 Toyota-cho, Toyota-sh, Aichi 71, 4718571, JP)
高見 昌宜 (〒71 愛知県豊田市トヨタ町１番地 トヨタ自動車株式会社内 Aichi, 4718571, JP)
Application Number:
JP2007/066387
Publication Date:
February 28, 2008
Filing Date:
August 23, 2007
Export Citation:
Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA (1 Toyota-cho, Toyota-shi Aichi, 71, 4718571, JP)
トヨタ自動車株式会社 (〒71 愛知県豊田市トヨタ町１番地 Aichi, 4718571, JP)
SUMITOMO CHEMICAL COMPANY, LIMITED (27-1, Shinkawa 2-chome Chuo-k, Tokyo 60, 1048260, JP)
住友化学株式会社 (〒60 東京都中央区新川二丁目２７番１号 Tokyo, 1048260, JP)
KAWAHARA, Mitsuyasu (1 Toyota-cho, Toyota-sh, Aichi 71, 4718571, JP)
川原 光泰 (〒71 愛知県豊田市トヨタ町１番地 トヨタ自動車株式会社内 Aichi, 4718571, JP)
トヨタ自動車株式会社 (〒71 愛知県豊田市トヨタ町１番地 Aichi, 4718571, JP)
SUMITOMO CHEMICAL COMPANY, LIMITED (27-1, Shinkawa 2-chome Chuo-k, Tokyo 60, 1048260, JP)
住友化学株式会社 (〒60 東京都中央区新川二丁目２７番１号 Tokyo, 1048260, JP)
KAWAHARA, Mitsuyasu (1 Toyota-cho, Toyota-sh, Aichi 71, 4718571, JP)
川原 光泰 (〒71 愛知県豊田市トヨタ町１番地 トヨタ自動車株式会社内 Aichi, 4718571, JP)
International Classes:
H01M8/02; C08G61/12; C08G81/00; C08J5/22; H01M8/10; H01M8/02; C08G61/00; C08G81/00; C08J5/20; H01M8/10
Attorney, Agent or Firm:
KISHIMOTO, Tatsuhito et al. (3rd Floor Oak Building Kyobashi, 16-10, Kyobashi 1-chome, Chuou-k, Tokyo 31, 1040031, JP)