Volume 8, Issue 3 1900986
Full Paper

Facile Synthesis of Flock-Like V2O3/C with Improved Electrochemical Performance as an Anode Material for Li-Ion Batteries

Leichao Meng

Leichao Meng

Key Laboratory of Advanced Ceramics and Machining Technology of Ministry of Education, School of Materials Science and Engineering, Tianjin University, Tianjin, 300072 China

School of Physics and Electronic Information Engineering, Qinghai Nationalities University, Xining, 810007 China

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Ruisong Guo

Corresponding Author

Ruisong Guo

Key Laboratory of Advanced Ceramics and Machining Technology of Ministry of Education, School of Materials Science and Engineering, Tianjin University, Tianjin, 300072 China

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Fuyun Li

Fuyun Li

Key Laboratory of Advanced Ceramics and Machining Technology of Ministry of Education, School of Materials Science and Engineering, Tianjin University, Tianjin, 300072 China

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Yuanliang Ma

Yuanliang Ma

School of Physics and Electronic Information Engineering, Qinghai Nationalities University, Xining, 810007 China

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Jianhong Peng

Jianhong Peng

School of Physics and Electronic Information Engineering, Qinghai Nationalities University, Xining, 810007 China

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Tingting Li

Tingting Li

Key Laboratory of Advanced Ceramics and Machining Technology of Ministry of Education, School of Materials Science and Engineering, Tianjin University, Tianjin, 300072 China

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Yani Luo

Yani Luo

Key Laboratory of Advanced Ceramics and Machining Technology of Ministry of Education, School of Materials Science and Engineering, Tianjin University, Tianjin, 300072 China

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Youzhen Li

Youzhen Li

School of Physics and Electronic Information Engineering, Qinghai Nationalities University, Xining, 810007 China

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Xiaohong Sun

Corresponding Author

Xiaohong Sun

Key Laboratory of Advanced Ceramics and Machining Technology of Ministry of Education, School of Materials Science and Engineering, Tianjin University, Tianjin, 300072 China

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First published: 07 December 2019
Citations: 11

Abstract

V2O3 is considered to be a potential anode material due to its large specific capacity and rich resources. Herein, flock-like V2O3 coated with carbon is prepared through a facile and simple solvothermal method followed by annealing at a relatively low temperature. The structure of V2O3/C is composed of porous strips. Due to the unique morphology and structure, the V2O3/C anode material shows excellent electrochemical performance. It delivers a specific discharge capacity of 696 mAh g−1 after 100 cycles, which is 95% of the specific discharge capacity (732 mAh g−1) after the sixth cycle. The V2O3/C anode material annealed at 360 °C (V2O3/C-360) delivers 601 mAh g−1 at a current density of 300 mA g−1 after 500 cycles. It implies superior cyclic stability of V2O3/C-360. In addition, the anode also shows excellent rate capability. Specific capacities of approximately 600, 420, and 300 mAh g−1 are obtained at the current densities of 0.3, 2, and 5 A g−1, respectively. The large current contribution of the capacitive reveals favorable superior lithium storage kinetics. This anode material presents great application potential in high-performance lithium-ion batteries.

Conflict of Interest

The authors declare no conflict of interest.

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