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Electrochemical hydrogen pump using a high-temperature-type proton conductor: improvement of pumping capacity

Authors
Journal
Solid State Ionics
0167-2738
Publisher
Elsevier
Publication Date
Volume
145
Identifiers
DOI: 10.1016/s0167-2738(01)00907-9
Keywords
  • High-Temperature-Type Proton Conductor
  • Hydrogen Pump
  • Current Efficiency
  • Water Vapor
  • Ionic Transport Number
Disciplines
  • Chemistry

Abstract

Abstract In the electrochemical hydrogen pump based on SrCe 0.95Yb 0.05O 3− α proton conductor cell, effects of water vapor supplied to the cathode and operation temperature on the pumping characteristics were examined. Hydrogen-pumping capacity could be enhanced by increasing water vapor supply to the cathode and by reducing operation temperature within the examined range of 700–900°C. Presence of sufficient water vapor at the cathode would keep the current efficiency of the hydrogen pump.

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