Journal
CHEMICAL PHYSICS LETTERS
Volume 741, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.cplett.2019.137061
Keywords
Double-layer WS2; Hollow carbon spheres; Lithium ion battery; Sodium ion battery
Funding
- National Natural Science Foundation of China [31601529]
- Equipment Preresearch Field Fund [61409220110]
- National Defense Science and technology innovation special zone projects [18-163-21-TS-001-046-01]
- Fundamental Research Funds for the Central Universities [ZYGX2019Z022]
- Sichuan Science and Technology Program [2018GZ0134]
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Double-layer WS2/hollow carbon composite designed as WS2 growing on nano-sized hollow carbon spheres is used as anodes for lithium- and sodium-ion batteries (LIBs, SIBs) adopting a modified one step in situ hydrothermal method. The hollow carbon spheres significantly increase the specific surface area and electrical conductivity, and thus achieve high specific capacities of 987 mAhg(-1) at 100 mAg(-1) and 826 mAhg(-1) at 1000 mAg(-1) for LIBs, and those of 575 mAhg(-1) at 100 mAg(-1) and 379 mAhg(-1) at 1000 mAg(-1) for SIBs; and obtain long cycling lives under high current density. Thus, the composite has a great potential application in LIBs and SIBs.
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