Abstract

The inorganic proton conductor CsH2PO4 (CDP) was investigated as a proton exchange membrane for electrochemical hydrogen separation at temperatures from 230 °C to 250 °C. In pure hydrogen, electrodes based on carbon-supported Pt reversibly oxidize and evolve hydrogen at 550 mA/cm2. In a simulated reformate stream containing 7% CO, a maximum hydrogen oxidation current of 260 mA/cm2 was observed.

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