Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 789, Issue -, Pages 288-294Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2019.02.251
Keywords
v(2)O(3); Carbon framework; Anode; Lithium-ion batteries
Categories
Funding
- NSFC [21571176, 21671077, 21771075, 21871106]
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The development of intercalation-type V2O3 in lithium-ion batteries is greatly hindered by low reversible capacity, poor cycling stability and rate performance. It is believed that fabricating V2O3/3D carbon framework composite will bring about a superior electrochemical performance. Facile synthesis of this composite, however, is a great challenge. In this work, a facile strategy is developed to synthesize V2O3/porous N-doped 3D carbon nanosheet framework composite. The obtained V2O3 nanoparticles are grown in porous N-doped 3D carbon nanosheet framework, which can significantly elevate electrical conductivity, Li+ ion transfer and electrode stability. What's more, the strong chemical interactions between V2O3 and carbon are conducive to accelerate charge transfer. These features of V2O3/porous N-doped 3D carbon nanosheet framework composite are favorable for achieving high reversible capacity and excellent rate performance. When used as the anode for lithium-ion batteries, a high discharge capacity of 436 mA h g(-1) is retained at 500 mA g(-1) after 200 cycles. Even at 2000 mA g(-1), a capacity of 344 mA h g(-1) is achieved. This work will bring the new prospects for the synthesis and the potential application of metal oxide/3D carbon framework composite. (C) 2019 Elsevier B.V. All rights reserved.
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