High-rate oxygen evolution reaction on Al-doped LiNiO2.
LiNi0.8 Al0.2 O2 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 IrO2 . 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.
Texas Materials Institute, The University of Texas at Austin, Austin, TX, 78712, USA.
Asha
A
Gupta
Texas Materials Institute, The University of Texas at Austin, Austin, TX, 78712, USA.
William D
WD
Chemelewski
Texas Materials Institute, The University of Texas at Austin, Austin, TX, 78712, USA.|McKetta Department of Chemical Engineering and Department of Chemistry, The University of Texas at Austin, Austin, Texas, 78712, USA.
C
C
Buddie Mullins
Texas Materials Institute, The University of Texas at Austin, Austin, TX, 78712, USA.
John B
JB
Goodenough
Al-doped LiNiO2; X-ray photoelectron spectroscopy (XPS); electrocatalysis; oxygen evolution reaction; solution combustion synthesis