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Mo‐Doped Ni 3 S 2 Nanowires as High‐Performance Electrocatalysts for Overall Water Splitting
Author(s) -
Du Cheng,
Men Yana,
Hei Xiuze,
Yu Jiahao,
Cheng Gongzhen,
Luo Wei
Publication year - 2018
Publication title -
chemelectrochem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.182
H-Index - 59
ISSN - 2196-0216
DOI - 10.1002/celc.201800630
Subject(s) - water splitting , nanowire , cathode , materials science , anode , doping , bifunctional , hydrothermal circulation , current density , nickel , catalysis , chemical engineering , nanotechnology , optoelectronics , electrode , chemistry , metallurgy , biochemistry , physics , photocatalysis , quantum mechanics , engineering
Abstract The search for highly active and stable bifunctional electrocatalysts toward overall water splitting is essential for renewable energy technologies. Here, 3D Mo‐doped Ni 3 S 2 nanowire networks directly grown on Ni foam through a successive hydrothermal and sulfidization process have been synthesized. Thanks to the unique 3D hierarchical nanowire networks and efficient Mo doping, the as‐synthesized Mo‐doped Ni 3 S 2 /NF exhibits superior catalytic activities and stability toward HER/OER, with overpotentials of 61 and 213 mV to reach a current density of 10 mA cm −2 for HER and OER, respectively. Furthermore, when used as both anode and cathode for overall water splitting, a cell voltage of 1.485 V is required to achieve a current density of 10 at mA cm −2 in alkaline solution.