Differential pressure water electrolysis system
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United States of America Patent
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Aug 21, 2018
Grant Date -
May 5, 2016
app pub date -
Oct 27, 2015
filing date -
Nov 5, 2014
priority date (Note) -
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Abstract
A differential pressure water electrolysis system includes high-pressure water electrolysis cells, first and second end plates, and a high pressure hydrogen manifold. The high pressure hydrogen manifold is provided to distribute hydrogen in a stacking direction. Each of the high-pressure water electrolysis cells includes an electrolyte membrane, an anode current collector, a cathode current collector, an anode separator, a cathode separator, an elastic member, a manifold member, and a cylindrical porous member. The manifold member is disposed between the anode separator and the electrolyte membrane to surround the high pressure hydrogen manifold and includes a seal chamber in which a sealing member is disposed to encircle and seal the high pressure hydrogen manifold. The cylindrical porous member is disposed in the manifold member between the seal chamber and the high pressure hydrogen manifold.
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