Title:
ELECTROLYTE MEMBRANE, PROCESS FOR PRODUCING THE ELECTROLYTE MEMBRANE, AND MEMBRANE ELECTRODE ASSEMBLY
Document Type and Number:
WIPO Patent Application WO/2008/111625
Kind Code:
A1
Abstract:
This invention provides an electrolyte membrane which, in the operation of a
fuel cell, can avoid the formation of a large stress within the membrane by the
expansion of the electrolyte membrane due to hydration and can produce a high-performance
and durable membrane electrode assembly. In the production of the electrolyte
membrane, a fluorine-type electrolyte resin membrane (35) integrated with
a porous reinforcing film (32) is hydrolyzed to impart ion conductivity. Hydration
in the hydrolysis can provide a reinforcing film-integrated electrolyte resin
membrane (35A) which has been expanded in a state that undergoes restriction
by the porous reinforcing film (32). The outer periphery of the expanded reinforcing
film-integrated electrolyte resin membrane (35A) is fixed, for example, by
a clamp (20) and, in this state, is dried to produce a water-free electrolyte membrane.
Inventors:
SUZUKI, Hiroshi (1 Toyota-cho, Toyota-sh, Aichi 71, 4718571, JP)
Application Number:
JP2008/054557
Publication Date:
September 18, 2008
Filing Date:
March 06, 2008
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)
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)
International Classes:
H01M8/02; C08J5/22; H01B1/06; H01B13/00; H01M8/10
Attorney, Agent or Firm:
HIRAKI, Yusuke et al. (Kamiya-cho MT Bldg. 19F, 3-20 Toranomon 4-chome,Minato-k, Tokyo 01, 1050001, JP)
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