期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 60, 期 39, 页码 21550-21557出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202108992
关键词
hydrogen evolution reaction; molten salt synthesis; sulfide oxidation reaction; WS2 nanosheets
资金
- National Natural Science Foundation of China [21875253]
- CAS-Commonwealth Scientific and Industrial Research Organization (CSIRO) Joint Research Projects [121835KYSB20200039]
- Scientific Research and Equipment Development Project of CAS [YJKYYQ20190007]
WS2 nanosheets synthesized with a reliable, scalable, and high-yield strategy exhibit excellent electrocatalytic properties for both alkaline S2- oxidation reaction and acidic hydrogen evolution reaction. A hybrid alkali-acid electrochemical cell utilizing WS2 nanosheets as bifunctional electrode catalysts shows promise for self-power or low-electricity electrolytic H-2 generation and environmentally friendly sulfion recycling with enhanced electron utilization efficiency.
WS2 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 WS2 nanosheets, which exhibit highly desirable electrocatalytic properties toward both the alkaline sulfion (S2-) oxidation reaction (SOR) and the acidic hydrogen evolution reaction (HER). The findings prompted us to develop a hybrid alkali-acid electrochemical cell with the WS2 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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