Electrochemical characterization of hydrogen pump with internal humidifier and dead-end anode channel

Kohei Ito, Yang Ming Hao, Hironori Nakajima, Hiroshi Yoshizumi, Kazunari Sasaki

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Hydrogen gas is compressed with a new electrochemical pump, where internal humidifier is built in, and dead-end at anode is considered for a practical situation. Both the voltage and current efficiency of the hydrogen pump is evaluated experimentally. The pump is operated up to 2 MPaG under the temperature condition of 293 and 333 K. The voltage efficiency indicates nearly 50% at most and the maximum current efficiency is 96%. Overpotentials inherently involved in the pump are discussed with electrochemical impedance spectroscopy.

Original languageEnglish
Pages (from-to)681-691
Number of pages11
JournalECS Transactions
Volume58
Issue number1
DOIs
Publication statusPublished - 2013

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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