C@SnS2 core-shell 0D/2D nanocomposite with excellent electrochemical performance as lithium-ion battery anode
Journal Article
·
· Electrochimica Acta
- Xi'an Univ. of Technology, Xi'an, Shaanxi (China)
- Ames Lab., and Iowa State Univ., Ames, IA (United States)
C@SnS2 core-shell 0D/2D nanocomposite was successfully prepared by a one-step hydrothermal method. The SnS2 nanosheets were heterogeneously nucleated and grown on the surface of carbon spheres. As an anode for lithium-ion batteries, the electrochemical performance of the C@SnS2 composite outperforms that of SnS2 nanoflowers. After 100 cycles, the reversible discharge specific capacity reaches an impressive value of 802 mAh g-1 at a current density of 100 mA g-1. Even after 600 cycles, the discharge specific capacity remains a value of 442 mAh g-1, under a high current density of 1 A g-1. Further, this remarkable lithium-ion storage performance can be attributed to the unique core-shell nanostructure and the synergy between SnS2 nanosheets and carbon spheres. This study advances our understanding of the vital role of carbon in fabricating nano-heterojunction or composite electrodes and provides a feasible route to significantly improve the electrochemical properties of SnS2 and other metal sulfides.
- Research Organization:
- Ames Laboratory (AMES), Ames, IA (United States)
- Sponsoring Organization:
- National Natural Science Foundation of China (NSFC); USDOE; USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division (MSE)
- Grant/Contract Number:
- AC02-07CH11358
- OSTI ID:
- 2278837
- Alternate ID(s):
- OSTI ID: 2274841
- Report Number(s):
- IS-J--11,229
- Journal Information:
- Electrochimica Acta, Journal Name: Electrochimica Acta Vol. 476; ISSN 0013-4686
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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