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One‐Pot Hydrothermal Synthesis of Ni 3 S 2 /MoS 2 /FeOOH Hierarchical Microspheres on Ni Foam as a High‐Efficiency and Durable Dual‐Function Electrocatalyst for Overall Water Splitting
Author(s) -
Fan Chen,
Yue Xiaoyang,
Shen Xiaoping,
Cheng Jia,
Ke Wentao,
Ji Zhenyuan,
Yuan Aihua,
Zhu Guoxing
Publication year - 2021
Publication title -
chemelectrochem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.182
H-Index - 59
ISSN - 2196-0216
DOI - 10.1002/celc.202001430
Subject(s) - electrocatalyst , materials science , water splitting , electrochemistry , electrolysis , hydrothermal circulation , bifunctional , chemical engineering , hydrogen production , hydrothermal synthesis , electrolysis of water , nanotechnology , electrode , catalysis , chemistry , photocatalysis , electrolyte , biochemistry , engineering
Electrochemical water splitting is a valid way for production of the pollution‐free, cost‐effective and sustainable hydrogen energy. Herein, Ni 3 S 2 /MoS 2 /FeOOH hierarchical microspheres constructed by nanobelt building blocks were directly grown on Ni foam via a simple one‐pot hydrothermal approach. Benefitting from the synergistic effect of these components as well as the unique hierarchical microsphere structure, Ni 3 S 2 /MoS 2 /FeOOH exhibits superior dual‐function electrocatalytic activity for water splitting in 1.0 M KOH, with low overpotentials of 219 mV for OER at 100 mA cm −2 and 76 mV for HER at 10 mA cm −2 . The electrolyzer based on the Ni 3 S 2 /MoS 2 /FeOOH electrodes only needs a low cell voltage of 1.52 V to drive water splitting at 10 mA cm −2 , which is comparable to the state‐of‐the‐art Pt−C||IrO 2 couple (1.50 V). The cost‐efficient and high‐performance Ni 3 S 2 /MoS 2 /FeOOH bifunctional electrocatalyst developed in this work exhibits a potential application prospect in industrial hydrogen production.