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High‐Rate Oxygen Evolution Reaction on Al‐Doped LiNiO 2
Author(s) -
Gupta Asha,
Chemelewski William D.,
Buddie Mullins C.,
Goodenough John B.
Publication year - 2015
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201502256
Subject(s) - oxygen evolution , redox , materials science , octahedron , oxygen , oxide , oxygen reduction reaction , doping , inorganic chemistry , combustion , crystallography , chemistry , metallurgy , electrochemistry , crystal structure , electrode , optoelectronics , organic chemistry
LiNi 0.8 Al 0.2 O 2 with a higher Ni 3+ /Li + ordering , synthesized by the solution‐combustion method, gives oxygen‐evolution‐reaction (OER) activity in alkaline solution that is comparable to that of IrO 2 . This confirms that the octahedral‐site Ni IV /Ni III couple in an oxide is an active redox center for the OER with redox energy pinned at the top of the O‐2p bands.