TY  - JOUR
AU  - Kerkmann, Abhilasha
AU  - Schneller, T.
AU  - Valov, I.
AU  - Singh, I. B.
AU  - Srivastava, A. K.
AU  - Waser, R.
TI  - Copper facilitated nickel oxy-hydroxide films as efficient synergistic oxygen evolution electrocatalyst
JO  - Journal of catalysis
VL  - 384
SN  - 0021-9517
CY  - Amsterdam [u.a.]
PB  - Elsevier
M1  - FZJ-2020-03877
SP  - 189 - 198
PY  - 2020
AB  - Efficient catalysts made of cheap and abundant metal ions are in need to overcome the sluggish kinetics of the anodic water oxidation reaction. The development of an inexpensive catalyst with improved performance is key to produce hydrogen by the electrolytic water splitting reaction. The user friendly chemical solution deposition method was applied to prepare films with predecided mole concentrations of copper and nickel. The mixed metal oxide with equal mole ratio of Cu:Ni (1:1) achieved the maximum activity with the onset of water oxidation at overpotential of 0.40 V (1.63 V vs RHE) and achieved the current density of 1 mA/cm2 at an overpotential of 0.420 V at pH 13. The activity of this combination is attributed to the copper facilitated in-situ formation of a layered nickel oxy-hydroxide structure. The presence of both metal ions was found to be necessary indicating a synergy between Cu and Ni for the oxygen evolution reaction. The present work representing the simple synthesis process of the catalyst with the improved water oxidation activity is a promising step to develop electrodes for water electrolysis.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000525490600018
DO  - DOI:10.1016/j.jcat.2020.02.023
UR  - https://juser.fz-juelich.de/record/885496
ER  -