Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 58, Issue 3, Pages 760-763Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201810729
Keywords
hollow structures; microboxes; nitrogen-doped carbon; SnS; 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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The design and synthesis of hierarchical microboxes, assembled from SnS nanoplates coated with nitrogen-doped carbon (NC) as an anode material for sodium-ion batteries, is demonstrated. The template-engaged multistep synthesis of the SnS@NC microboxes involves sequential phase transformation, polydopamine coating, and thermal annealing in N-2. The SnS@NC composite with two-dimensional nano-sized subunits rationally integrates several advantages including shortening the diffusion path of electrons/Na+ ions, improving electric conductivity, and alleviating volume variation of the electrode material. As a result, the SnS@NC microboxes show efficient sodium storage performance with high capacity, good cycling stability, and excellent rate capability.
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