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Interface Engineering of Needle‐Like P‐Doped MoS 2 /CoP Arrays as Highly Active and Durable Bifunctional Electrocatalyst for Overall Water Splitting
Author(s) -
Hu Yan,
Yu Hongbo,
Qi Luoluo,
Dong Jiaxin,
Yan Puxuan,
Taylor Isimjan Tayirjan,
Yang Xiulin
Publication year - 2021
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.202002873
Subject(s) - bifunctional , electrocatalyst , overpotential , water splitting , catalysis , oxygen evolution , materials science , electrolysis , electrochemistry , chemical engineering , electrolysis of water , bifunctional catalyst , noble metal , nanotechnology , alkaline water electrolysis , inorganic chemistry , electrode , chemistry , metal , metallurgy , organic chemistry , photocatalysis , engineering , electrolyte
Abstract Developing a bifunctional water splitting catalyst with high efficiency and low cost are crucial in the electrolysis water industry. Here, we report a rational design and simple preparation method of MoS 2 ‐based bifunctional electrocatalyst on carbon cloth (CC). The optimized P‐doped MoS 2 @CoP/CC catalyst presents low overpotentials for the hydrogen (HER) and oxygen evolution reactions (OER) of 64 and 282 mV in alkaline solution as well as 72 mV HER overpotential in H 2 SO 4 at a current density of 10 mA cm −2 . Furthermore, P‐MoS 2 @CoP/CC as a bifunctional catalyst delivered relatively low cell voltages of 1.83 and 1.97 V at high current densities of 500 and mA cm −2 in 30 % KOH. The two‐electrode system showed a remarkable stability for 30 h, even outperformed the benchmark RuO 2 ||Pt/C catalyst. The excellent electrochemical performance can be credited to the unique microstructure, high surface area, and the synergy between metal species. This study presents a possible alternative for noble metal‐based catalysts to overcome the challenges of industrial applications.