Nanostructured C@CuS Core–Shell Framework with High Lithium-Ion Storage Performance
- Xi’an Technological University (China)
- Ames Laboratory, and Iowa State University, Ames, IA (United States)
In this study, we have synthesized a nanostructured core–shell framework of carbon-coated copper sulfide (C@CuS) through a one-step precipitation technique. The carbon sphere template facilitated the nucleation of CuS nanostructures. The synthesized nanocomposites have demonstrated remarkable lithium-ion storage capabilities when utilized as an anode in lithium-ion batteries. Notably, they exhibit an impressive rate capability of 314 mAh g-1 at a high current density of 5000 mA g-1, along with excellent long-term cycle stability, maintaining 463 mAh g-1 at 1000 mA g-1 after 800 cycles. This superior performance is due to the core–shell architecture of the composite, where the carbon core enhances the conductivity of CuS nanoparticles and mitigates volume expansion, thus preventing capacity loss. Our study not only elucidates the significance of carbon in the construction of nano-heterojunctions or composite electrodes but also presents a practical approach to significantly boost the electrochemical performance of CuS and other metal sulfides.
- Research Organization:
- Ames Laboratory (AMES), Ames, IA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division (MSE); National Natural Science Foundation of China (NSFC)
- Grant/Contract Number:
- AC02-07CH11358
- OSTI ID:
- 2448480
- Report Number(s):
- IS-J--11,433
- Journal Information:
- Journal of Composites Science, Journal Name: Journal of Composites Science Journal Issue: 9 Vol. 8; ISSN 2504-477X
- Publisher:
- MDPICopyright Statement
- Country of Publication:
- United States
- Language:
- English
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