Lithium vanadate nanowires@reduced graphene oxide nanocomposites on titanium foil with super high capacities for lithium-ion batteries.
With a theoretically high capacity and suitable discharge/charge plateaus, lithium vanadates (such as Li0.04V2O5) can be used as cathode material for lithium ion batteries. Herein, Li0.04V2O5nanowires are densely anchored onto reduced graphene oxide (rGO) nanosheets to form a Li0.04V2O5@rGO nanocomposite by a hydrothermal method with subsequent thermal treatment. Due to this unique structure, the Li0.04V2O5@rGO exhibits remarkable rate performance and excellent cycling stability. Specifically, it delivers a reversible discharge capacity of 738.09mAhg-1at a current density of 100mAg-1in the voltage range of 2.0-4.0V. After 500 cycles, it still maintains a high capacity of 731.70mAhg-1, which represents 95.01% retention of the original reversible capacity. These results indicate that the Li0.04V2O5@rGO could be a promising candidate as cathode active material for long-term cycling performance in lithium-ion batteries.
Key Lab of Green Processing and Functional Textiles of New Textile Materials, Ministry of Education, College of Material Science and Engineering, Wuhan Textile University, Wuhan 430200, PR China.
Yunhe
Y
Cao
Key Lab of Green Processing and Functional Textiles of New Textile Materials, Ministry of Education, College of Material Science and Engineering, Wuhan Textile University, Wuhan 430200, PR China.
Danyang
D
Chai
Department of Chemistry and Physics, Fayetteville State University, Fayetteville, NC 28301, USA.
Zhiping
Z
Luo
Key Lab of Green Processing and Functional Textiles of New Textile Materials, Ministry of Education, College of Material Science and Engineering, Wuhan Textile University, Wuhan 430200, PR China.
Ming
M
Jiang
Key Lab of Green Processing and Functional Textiles of New Textile Materials, Ministry of Education, College of Material Science and Engineering, Wuhan Textile University, Wuhan 430200, PR China.
Weilin
W
Xu
Key Lab of Green Processing and Functional Textiles of New Textile Materials, Ministry of Education, College of Material Science and Engineering, Wuhan Textile University, Wuhan 430200, PR China.
Chuanxi
C
Xiong
Information and Engineering School, Wuchang University of Technology, Wuhan 430223, PR China.
Shan
S
Li
School of Metallurgy and Environment, Central South University, Changsha 410083, PR China.
Hui
H
Liu
Key Lab of Green Processing and Functional Textiles of New Textile Materials, Ministry of Education, College of Material Science and Engineering, Wuhan Textile University, Wuhan 430200, PR China. Electronic address: csufangdong@gmail.com.
Dong
D
Fang
Lithium ion battery; Lithium vanadate; Nanocomposite; Reduced graphene oxide