Synthesis of Flower-Like Vanadium Disulfide for Lithium Storage Application

Authors

Pan LI, Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), College of Chemistry, Nankai University, Tianjin 300071, China;
Jian LIU, Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), College of Chemistry, Nankai University, Tianjin 300071, China;
Wei-yi SUN, Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), College of Chemistry, Nankai University, Tianjin 300071, China;
Hai-xia LI, Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), College of Chemistry, Nankai University, Tianjin 300071, China;Follow
Zhan-liang TAO, Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), College of Chemistry, Nankai University, Tianjin 300071, China;

Corresponding Author

Hai-xia LI(lihaixia@nankai.edu.cn)

Abstract

In order to improve the electrochemical properties of vanadium disulfide (VS₂) as an electrode material in Li-ion battery, the flower-like VS₂ was prepared by a one-step hydrothermal method with the addition of polyethylene glycol 400. The phase and morphology of the product were characterized by using X-ray diffraction and field emission scanning electron microscopy. During the growth process, it was observed that the flower-like VS₂ was interspersed with several hexagonal vanadium disulfide nanosheets, which had a high specific surface area and excellent structural stability. The flower-like VS₂ was used for the cathode material test in lithium ion batteries. The results showed that the spheroidal VS₂ had excellent cycle stability at a voltage range of 1 ~ 3 V and current density of 200 mA·g^-1, while after 50 cycles the discharge capacity was 450 mAh·g^-1.

Graphical Abstract

Keywords

vanadium disulfide, surfactant, self-assembly, lithium-ion batteries

DOI Link

https://doi.org/10.13208/j.electrochem.180549

Publication Date

2019-02-28

Online Available Date

2019-01-15

Revised Date

2019-01-15

Received Date

2018-12-05

Recommended Citation

Pan LI, Jian LIU, Wei-yi SUN, Hai-xia LI, Zhan-liang TAO. Synthesis of Flower-Like Vanadium Disulfide for Lithium Storage Application[J]. Journal of Electrochemistry, 2019 , 25(1): 104-111.
DOI: 10.13208/j.electrochem.180549
Available at: https://jelectrochem.xmu.edu.cn/journal/vol25/iss1/8