Apparatus and method for maintaining compression of the active area in an electrochemical cell
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United States of America Patent
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Apr 8, 2008
Grant Date -
Jun 5, 2003
app pub date -
Sep 27, 2001
filing date -
Oct 7, 1999
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An electrochemical cell includes a first electrode, a second electrode, a proton exchange membrane disposed between and in intimate contact with the electrodes, and a pressure pad disposed in electrical communication with the first electrode. The pressure pad is an electrically conductive sheet and is of a structure that is conformable to pressure variations within the cell. Methods of forming the pressure pad include disposing dimples or corrugations at the electrically conductive member. A method of maintaining compression within the cell includes disposing the electrically conductive member and the compression member at the first electrode, applying a load at the cell to compress the cell components, and maintaining electrical communication through the electrically conductive member.
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