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NiSe Nanowire Film Supported on Nickel Foam: An Efficient and Stable 3D Bifunctional Electrode for Full Water Splitting
Author(s) -
Tang Chun,
Cheng Ningyan,
Pu Zonghua,
Xing Wei,
Sun Xuping
Publication year - 2015
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201503407
Subject(s) - overpotential , bifunctional , nickel , oxygen evolution , nanowire , electrolysis , electrode , water splitting , materials science , alkaline water electrolysis , chemical engineering , catalysis , electrolysis of water , inorganic chemistry , chemistry , nanotechnology , metallurgy , electrochemistry , organic chemistry , photocatalysis , electrolyte , engineering
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) in situ 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 270 mV required to achieve 20 mA cm −2 and strong durability in 1.0 M 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 10 mA cm −2 at a cell voltage of 1.63 V.