期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 59, 期 6, 页码 2465-2472出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201913170
关键词
electrospinning; hollow nanofibers; lithium ion batteries; tin; tin oxide
资金
- National Natural Science Foundation of China (NSFC) [21774005, 21975007, 21433012, 51772010]
- National Natural Science Foundation for Outstanding Youth Foundation
- National Postdoctoral Program for Innovative Talents [BX20190027]
- China Postdoctoral Science Foundation [2019M650431]
- Natural Science Foundation of Hebei Province [B2019204009]
- Fundamental Research Funds for the Central Universities
- National Program for Support of Top-notch Young Professionals
- 111 project [B14009]
Multi-wall Sn/SnO2@carbon hollow nanofibers evolved from SnO2 nanofibers are designed and programable synthesized by electrospinning, polypyrrole coating, and annealing reduction. The synthesized hollow nanofibers have a special wire-in-double-wall-tube structure with larger specific surface area and abundant inner spaces, which can provide effective contacting area of electrolyte with electrode materials and more active sites for redox reaction. It shows excellent cycling stability by virtue of effectively alleviating pulverization of tin-based electrode materials caused by volume expansion. Even after 2000 cycles, the wire-in-double-wall-tube Sn/SnO2@carbon nanofibers exhibit a high specific capacity of 986.3 mAh g(-1) (1 A g(-1)) and still maintains 508.2 mAh g(-1) at high current density of 5 A g(-1). This outstanding electrochemical performance suggests the multi-wall Sn/SnO2@ carbon hollow nanofibers are great promising for high performance energy storage systems.
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