Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 58, Issue 23, Pages 7739-7743Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201902583
Keywords
CoS2; CuS; nanoboxes; nanosheets; sodium-ion batteries
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Funding
- National Research Foundation (NRF) of Singapore via the NRF investigatorship [NRF-NRFI2016-04]
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Metal sulfides have received considerable attention for efficient sodium storage owing to their high capacity and decent redox reversibility. However, the poor rate capability and fast capacity decay greatly hinder their practical application in sodium-ion batteries. Herein, an elegant multi-step templating strategy has been developed to rationally synthesize hierarchical double-shelled nanoboxes with the CoS2 nanosheet-constructed outer shell supported on the CuS inner shell. Their structure and composition enable these hierarchical CuS@CoS2 nanoboxes to show boosted electrochemical properties with high capacity, outstanding rate capability, and long cycle life.
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