期刊
MATERIALS LETTERS
卷 143, 期 -, 页码 35-37出版社
ELSEVIER
DOI: 10.1016/j.matlet.2014.12.055
关键词
Core-shell; Sn; Carbon materials; Nanocomposites; Anode; Lithium-ion batteries
资金
- National Natural Science Foundation of China [51201002]
Core/shell-structured Sn/C nanocapsules with Sn nanoparticles as the core and defective onion-like carbon as the shell are synthesized by a modified arc-discharge method. The Sn/C nanocapsule anode maintains a high discharge capacity of 585 mAh g(-1) after 100 cycles at 0.1 A g(-1) and obtains a high reversible capacity of similar to 480 mAh g(-1) at 5 A g(-1). The remarkable electrochemical performance is attributed to the effective combination of the Sn nanoparticle cores and the defective onion-like carbon shells, which simultaneously solves the major problems of pulverization, loss of electrical contact, and particle aggregation encountered in Sn anode. (C) 2014 Elsevier B.V. All rights reserved.
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