Journal
CERAMICS INTERNATIONAL
Volume 42, Issue 13, Pages 14595-14600Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2016.06.075
Keywords
Self-standing electrode; V2O5 nanobelts; Cycling stability; Lithium-ion batteries
Categories
Funding
- Program for New Century Excellent Talents in University, Ministry of Education, China [NCET-11-0810]
- China Postdoctoral Science Foundation [200902381]
- Fundamental Research Funds for Central Universities [HIT. BRETIII.201203]
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Self-standing V2O5 nanobelt electrode free of binders, conductive carbon or current collectors was successfully prepared via a simple one-step hydrothermal reaction. The length of V2O5 nanobelts was up to several hundreds micrometers and the thickness was around 40 nm. Ultralong nanobelts as building blocks and internal voids provide a robust mechanical flexibility and shortened ion/electron transport pathway. The self-standing electrode delivered an initial specific capacity of 127.4 mA h g(-1) at a current density of 60 mA g(-1) and exhibited excellent cycling stability with capacity retention up to 89.8% after 200 cycles. The outstanding cycling performance can be attributed to the excellent network stability, shortened Li-ion diffusion pathway and the high surface area between electrolyte/electrode interfaces. (C) 2016 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
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