Fuel cell

Patent metadata

Field	Value
Publication number	US-9105898-B2
Application number	US-201313779743-A
Country	US
Kind code	B2
Filing date	Feb 28, 2013
Priority date	Mar 9, 2012
Publication date	Aug 11, 2015
Grant date	Aug 11, 2015

Abstract

A fuel cell includes a membrane electrode assembly and a separator. The separator includes a water accumulation portion including at least one of a buffer portion, a lowermost channel groove, a channel junction portion, and a bypass channel. The buffer portion is connected to a reactant gas channel through which a reactant gas is to flow along a power generation surface of the membrane electrode assembly. The channel groove is provided in the reactant gas channel and located at a lowest position in the reactant gas channel in a direction of gravity when the membrane electrode assembly and the separator are in an upright position. Channel grooves of the reactant gas channel are joined in the channel junction portion. The membrane electrode assembly includes a water impermeable layer which is disposed outside of a power generation region and which faces the water accumulation portion.

First claim

What is claimed is:

1. A fuel cell comprising:
a membrane electrode assembly comprising:
a first electrode;
a second electrode; and
a solid polymer electrolyte membrane provided between the first electrode and the second electrode in a stacking direction; and

a separator, the membrane electrode assembly and the separator being stacked in the stacking direction, the separator including a water accumulation portion comprising at least one of
a buffer portion connected to a…

Assignees

• Honda Motor Co Ltd

Inventors

• Sugiura Seiji
• Goto Shuhei
• Ishida Kentaro

Classifications

• H01M8/0258

  Electricity · mapped topic

• Y02E60/521

  Cross-Sectional Technologies · mapped topic

• H01M8/0271

  Electricity · mapped topic

• H01M8/246

  Electricity · mapped topic

• H01M8/0267

  Electricity · mapped topic