Patent ID: 6685821
Filing Date: 2004-02-03
Classification: C25B,Y02E

Abstract:
A system for producing high-pressure hydrogen, comprising:(a) a first stack of at least one electrochemical hydrogen generating cell for generating hydrogen at a first pressure, said electrochemical hydrogen generating cell including a first anode and a first cathode; and (b) integrated with said first stack, a second stack of at least one electrochemical hydrogen compressor cell, said electrochemical hydrogen compressor cell including a second anode, wherein said second anode is a gas-diffusion electrode, a second cathode, and an ionic conductive membrane in intimate contact with and separating said second anode and said second cathode, said second anode oxidizing hydrogen generated by said first stack and said second cathode evolving hydrogen at a second pressure; wherein the first pressure is atmospheric or moderate pressure and the second pressure is greater than the first pressure.