Title:
A membrane electrode zygote and a fuel cell
Document Type and Number:
Japanese Patent JP6135644
Kind Code:
B2
Abstract:
An object is to prevent an increase in overall thickness of a membrane electrode assembly. There is provided a membrane electrode assembly. The membrane electrode assembly comprises an electrolyte membrane; a catalyst layer that is formed on a surface of the electrolyte membrane and includes a catalyst and an ionomer; and a gas diffusion layer that is formed on a surface of the catalyst layer on an opposite side to the electrolyte membrane. The catalyst layer includes a first layer that is in contact with the electrolyte membrane and a second layer that is in contact with the gas diffusion layer. An amount of the ionomer in a first portion of the first layer that is in contact with the electrolyte membrane is larger than an amount of the ionomer in a second portion of the first layer that is in contact with the second layer. An amount of the ionomer in a third portion of the second layer that is in contact with the gas diffusion layer is larger than the amount of the ionomer in the first portion.
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Inventors:
General Hamano
Yoshio Daio
Tsunemasa Nishida
Yoshio Daio
Tsunemasa Nishida
Application Number:
JP2014230631A
Publication Date:
May 31, 2017
Filing Date:
November 13, 2014
Export Citation:
Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA
International Classes:
H01M4/86; H01M8/02
Domestic Patent References:
| JP2013093166A | ||||
| JP2010218721A | ||||
| JP2008176990A | ||||
| JP2004193106A | ||||
| JP2013145652A | ||||
| JP2008192490A | ||||
| JP2005135787A | ||||
| JP2010257720A | ||||
| JP2006185800A | ||||
| JP2010021056A | ||||
| JP2002289230A | ||||
| JP2004158388A | ||||
| JP2005216834A |
Foreign References:
| US20100330452 |
Attorney, Agent or Firm:
Meisei International Patent Office