Not permeable low contact resistance pad for composite fuel cell stack

A fuel cell stack that includes a non-permeable shim plate positioned between a composite unipolar plate and a terminal plate at both ends of the stack, where the shim plate is made of a non-corrosivematerial, such as stainless steel, titanium or sealed graphite. Because the shim plate is non-permea...

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Bibliographic Details
Main Authors BRISBANE R. M, ABD ELHAMID M. H, ANDRIS-SCHOTT B
Format Patent
LanguageChinese
English
Published 24.02.2010
Subjects
BASIC ELECTRIC ELEMENTS
ELECTRICITY
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
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Summary:A fuel cell stack that includes a non-permeable shim plate positioned between a composite unipolar plate and a terminal plate at both ends of the stack, where the shim plate is made of a non-corrosivematerial, such as stainless steel, titanium or sealed graphite. Because the shim plate is non-permeable, it prevents cooling fluid that diffuses through the unipolar plate from contacting the terminal plate, which would otherwise corrode the terminal plate. The shim plate can be coated with a conductive material, such as gold, platinum, ruthenium oxide or mixtures thereof, to reduce its contact resistance.
Bibliography:Application Number: CN200710103921