Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 58, Issue 23, Pages 7744-7748Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201902988
Keywords
copper sulfides; Cu9S5; hollow structures; ion-exchange; sodium-ion batteries
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Funding
- Ministry of Education of Singapore through AcRF Tier-1 funding [RG5/17(S), M4011783.120]
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Metal sulfides with excellent redox reversibility and high capacity are very promising electrode materials for sodium-ion batteries. However, their practical application is still hindered by the poor rate capability and limited cycle life. Herein, a template-based strategy is developed to synthesize nitrogen-doped carbon-coated Cu9S5 bullet-like hollow particles starting from bullet-like ZnO particles. With the structural and compositional advantages, these unique nitrogen-doped carbon-coated Cu9S5 bullet-like hollow particles manifest excellent sodium storage properties with superior rate capability and ultra-stable cycling performance.
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