Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 55, Issue 49, Pages 15240-15245Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201607651
Keywords
alkaline hydrogen evolution; chevrel phase; electrocatalysts; NiMo3S4; water splitting
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Funding
- CAS Pioneer Hundred Talents Program
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Electrochemical water splitting to generate molecular hydrogen requires catalysts that are cheap, active, and stable, particularly for alkaline electrolyzers, where the cathodic hydrogen evolution reaction is slower in base than in acid even on platinum. Herein, we describe the synthesis of new hollow Chevrel-phase NiMo3S4 and its alkaline hydrogen evolution reaction (HER) performance: onset potential of -59mV, Tafel slope of 98mV per decade, and exchange current density of 3.9x10(-2)mAcm(-2). This Chevrel-phase chalcogenide also demonstrates outstanding long-term stability under harsh HER cycling conditions. Chevrel-phase nanomaterials show promise as efficient, low-cost catalysts for alkaline electrolyzers.
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