A novel honeycomb-like WS2-x/CoS@C composite as anode for lithium ion batteries
2022
Lu, Shuangxing | Luo, Wenbin | Chao, Zisheng | Liu, Yanhui | Han, Shenghua | Fan, Jincheng
Two-dimensional tungsten disulfide (WS₂) is a promising anode material for lithium-ion batteries. The further development of WS₂ is restricted by the defects of electrical conductivity and structural stability. Here, a bimetallic sulfide/carbon composite WS₂₋X/CoS@C was prepared by a facile one-step MOFs-engaged method. The WS₂/CoS heterojunctions and sulfur vacancies were introduced into the material, which improved the electronic/ionic diffusion kinetics of the composite. A large number of honeycomb carbon nanotubes were formed on the surface of the composite, which could effectively increase the specific surface area and enhance the conductivity of the composite. The WS₂₋X/CoS@C electrode exhibited excellent electrochemical performance used as an anode for lithium-ion battery. The initial discharge capacity of the WS₂₋X/CoS@C delivered 936 mAh/g at 100 mA/g and retained high discharge capacity of 600 mAh/g at 200 mA/g after the 100 cycles.
Show more [+] Less [-]AGROVOC Keywords
Bibliographic information
This bibliographic record has been provided by National Agricultural Library