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Aluminum‐Doped Hafnium Oxynitride: Effect of Cation Doping on Oxygen‐Reduction‐Reaction Activity in Acid Media
Author(s) -
Chisaka Mitsuharu,
Muramoto Hirokazu
Publication year - 2014
Publication title -
chemelectrochem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.182
H-Index - 59
ISSN - 2196-0216
DOI - 10.1002/celc.201300271
Subject(s) - doping , hafnium , oxygen , valence (chemistry) , oxygen reduction reaction , inorganic chemistry , materials science , chemistry , electrode , electrochemistry , zirconium , organic chemistry , optoelectronics
Al atoms are doped into Hf sites in HfO x nanoparticles supported on carbon black to incorporate O defects without decreasing the Hf valence. The oxygen reduction reaction activity is enhanced by the Al doping, and Al atoms are stable following the N doping into the O sites and accelerated degradation tests involving 20 000 potential cycles.