Separation of overvoltage in electrochemical hydrogen pump

摘要

Electrochemical hydrogen pump (EHP) is a hydrogen gas compressor, which can boost in isothermal process with no mechanical links to perform. Thus, EHP has advantage in power consumption to compress, and is expected to be a necessary apparatus to sustain hydrogen energy society in next generation. Getting higher performance of EHP is determined just by smaller power consumption (less overvoltage). This study challenges to clarify overvoltage components in quantitative manner. A reference electrode method with intentionally thick polymer electrolyte membrane and low platinum loading catalyst layer succeeded to separate the overvoltage components between anode and cathode.