Performance of a high temperature polymer electrolyte membrane water electrolyser

A high temperature polymer electrolyte membrane water electrolyser (PEMWE) was investigated at temperatures between 80 and 130 °C and pressures between 0.5 and 4 bar. Nanometer size Ru 0.7Ir 0.3O 2 and Pt/C were employed as anode and cathode catalysts respectively. The catalyst coated on membrane (C...

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Bibliographic Details
Published in:Journal of power sources 2011-11, Vol.196 (21), p.8918-8924
Main Authors: Xu, Wu, Scott, Keith, Basu, Suddhasatwa
Format: Article
Language:English
Subjects:
Catalysis
Catalysts
Chemistry
Current density
Electric potential
Electrochemistry
Electrolytes
Evolution
Exact sciences and technology
General and physical chemistry
High temperature
Kinetics and mechanism of reactions
Membranes
PEMWE
Polymer electrolyte membrane
Voltage
Water electrolyser
Water electrolysis
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Summary:A high temperature polymer electrolyte membrane water electrolyser (PEMWE) was investigated at temperatures between 80 and 130 °C and pressures between 0.5 and 4 bar. Nanometer size Ru 0.7Ir 0.3O 2 and Pt/C were employed as anode and cathode catalysts respectively. The catalyst coated on membrane (CCM) method was used to fabricate the membrane electrode assemblies. The membrane, oxygen evolution catalysts and MEAs were characterized with SEM, XRD and TEM. The influence of high temperature and pressure was investigated using in situ electrochemical measurements. Increasing temperature and pressure produced higher current densities for oxygen evolution, and smaller terminal voltages. The high temperature PEMWE achieved a voltage of 1.51 V at a current density of 1 A cm −2, at 130 °C and 4 bar pressure.
ISSN:0378-7753
1873-2755
DOI:10.1016/j.jpowsour.2010.12.039