Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 54, Issue 32, Pages 9351-9355Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201503407
Keywords
bifunctional catalysts; nanowires; nickel; selenium; water splitting
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Funding
- National Natural Science Foundation of China [21175129]
- National Basic Research Program of China [2011CB935800]
- Strategic Priority Research Program of the Chinese Academy of Sciences [XDA09030104]
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Active and stable electrocatalysts made from earth-abundant elements are key to water splitting for hydrogen production through electrolysis. The growth of NiSe nanowire film on nickel foam (NiSe/NF) insitu by hydrothermal treatment of NF using NaHSe as Se source is presented. When used as a 3D oxygen evolution electrode, the NiSe/NF exhibits high activity with an overpotential of 270mV required to achieve 20mAcm(-2) and strong durability in 1.0M KOH, and the NiOOH species formed at the NiSe surface serves as the actual catalytic site. The system is also highly efficient for catalyzing the hydrogen evolution reaction in basic media. This bifunctional electrode enables a high-performance alkaline water electrolyzer with 10mAcm(-2) at a cell voltage of 1.63V.
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