期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 55, 期 3, 页码 1138-1142出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201509758
关键词
carbon nitride; electrocatalysis; oxygen-evolution reaction; porous materials; titanium carbide
资金
- Australian Research Council (ARC) through the Discovery Project programs [DP140104062, DP130104459]
- Discovery Early Career Researcher Award [DE150101306]
Free-standing flexible films, constructed from two-dimensional graphitic carbon nitride and titanium carbide (with MXene phase) nanosheets, display outstanding activity and stability in catalyzing the oxygen-evolution reaction in alkaline aqueous system, which originates from the Ti-N-x motifs acting as electroactive sites, and the hierarchically porous structure with highly hydrophilic surface. With this excellent electrocatalytic ability, comparable to that of the state-of-the-art precious-/transition-metal catalysts and superior to that of most free-standing films reported to date, they are directly used as efficient cathodes in rechargeable zinc-air batteries. Our findings reveal that the rational interaction between different two-dimensional materials can remarkably promote the oxygen electrochemistry, thus boosting the entire clean energy system.
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