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Scalable Synthesis of Tungsten Disulfide Nanosheets for Alkali‐Acid Electrocatalytic Sulfion Recycling and H 2 Generation
Author(s) -
Yi Luocai,
Ji Yaxin,
Shao Ping,
Chen Junxiang,
Li Junwei,
Li Hao,
Chen Kai,
Peng Xinxin,
Wen Zhenhai
Publication year - 2021
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.202108992
Subject(s) - bifunctional , alkali metal , environmentally friendly , electrochemistry , anode , materials science , electrolyte , catalysis , tungsten disulfide , nanotechnology , chemistry , chemical engineering , electrode , inorganic chemistry , organic chemistry , metallurgy , ecology , engineering , biology
Abstract WS 2 nanosheets hold great promise for a variety of applications yet faces a grand challenge in terms of large‐scale synthesis. We report a reliable, scalable, and high‐yield (>93 %) synthetic strategy to fabricate WS 2 nanosheets, which exhibit highly desirable electrocatalytic properties toward both the alkaline sulfion (S 2− ) oxidation reaction (SOR) and the acidic hydrogen evolution reaction (HER). The findings prompted us to develop a hybrid alkali‐acid electrochemical cell with the WS 2 nanosheets as bifunctional electrode catalysts of alkaline anodic SOR and acidic cathodic HER. The proof‐of‐concept device holds promise for self‐power or low‐electricity electrolytic H 2 generation and environmentally friendly recycling of sulfion with enhanced electron utilization efficiency.
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