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Composition Engineering–Triggered Bifunctionality of Free‐Standing Coral‐Like 1T‐MoS 2 for Highly Efficient Overall Water Splitting
Author(s) -
Ding Xiaoqing,
Li Xitao,
Lv Xinding,
Zheng Yan-Zhen,
Wu Qibing,
Ding Haiyang,
Wu Jiaojiao,
Li Ran,
Tao Xia
Publication year - 2020
Publication title -
energy technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.91
H-Index - 44
eISSN - 2194-4296
pISSN - 2194-4288
DOI - 10.1002/ente.202000268
Subject(s) - overpotential , water splitting , bifunctional , oxygen evolution , materials science , chemical engineering , nanotechnology , chemistry , electrochemistry , catalysis , electrode , biochemistry , photocatalysis , engineering
Metallic‐phase 1T‐MoS 2 with its good electronic conductivity and abundant active sites attracts more attention for energy conversion and storage. However, developing a high‐performance bifunctional 1T‐MoS 2 for overall water splitting still is a challenge. Herein, a composition (Fe and Mn)‐engineering approach that is capable of triggering efficient hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) bifunctionality into coral‐like 1T‐MoS 2 nanorods for overall water splitting is reported. The results demonstrate that composition engineering induces rich crystal defects and electronic structure variation of the freestanding coral‐like 1T‐MoS 2 , leading to outstanding HER (overpotential of 34.1 mV at 10 mA cm −2 ) and OER (overpotential of 220.0 mV at 50 mA cm −2 ) activity and excellent stability in alkaline media. The facile composition‐engineering activation strategy is also feasible to endow the other transition metal dichalcogenides with dual/multiple functionality.