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Composite Nanoarchitectonics with CoS2 Nanoparticles Embedded in Graphene Sheets for an Anode for Lithium-Ion Batteries.
Li, Tongjun; Dong, Hongyu; Shi, Zhenpu; Yue, Hongyun; Yin, Yanhong; Li, Xiangnan; Zhang, Huishuang; Wu, Xianli; Li, Baojun; Yang, Shuting.
Afiliación
  • Li T; School of Physics, Henan Normal University, Xinxiang 453007, China.
  • Dong H; School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, China.
  • Shi Z; National and Local Joint Engineering Laboratory of Motive Power and Key Materials, Henan Normal University, Xinxiang 453007, China.
  • Yue H; Collaborative Innovation Center of Henan Province for Motive Power and Key Materials, Henan Normal University, Xinxiang 453007, China.
  • Yin Y; School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, China.
  • Li X; National and Local Joint Engineering Laboratory of Motive Power and Key Materials, Henan Normal University, Xinxiang 453007, China.
  • Zhang H; Collaborative Innovation Center of Henan Province for Motive Power and Key Materials, Henan Normal University, Xinxiang 453007, China.
  • Wu X; School of Physics, Henan Normal University, Xinxiang 453007, China.
  • Li B; School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, China.
  • Yang S; School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, China.
Nanomaterials (Basel) ; 12(4)2022 Feb 21.
Article en En | MEDLINE | ID: mdl-35215052
Cobalt sulfides are attractive as intriguing candidates for anodes in Lithium-ion batteries (LIBs) due to their unique chemical and physical properties. In this work, CoS2@rGO (CSG) was synthesized by a hydrothermal method. TEM showed that CoS2 nanoparticles have an average particle size of 40 nm and were uniformly embedded in the surface of rGO. The battery electrode was prepared with this nanocomposite material and the charge and discharge performance was tested. The specific capacity, rate, and cycle stability of the battery were systematically analyzed. In situ XRD was used to study the electrochemical transformation mechanism of the material. The test results shows that the first discharge specific capacity of this nanocomposite reaches 1176.1 mAhg-1, and the specific capacity retention rate is 61.5% after 100 cycles, which was 47.5% higher than that of the pure CoS2 nanomaterial. When the rate changes from 5.0 C to 0.2 C, the charge-discharge specific capacity of the nanocomposite material can almost be restored to the initial capacity. The above results show that the CSG nanocomposites as a lithium-ion battery anode electrode has a high reversible specific capacity, better rate performance, and excellent cycle performance.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Nanomaterials (Basel) Año: 2022 Tipo del documento: Article País de afiliación: China Pais de publicación: Suiza
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Nanomaterials (Basel) Año: 2022 Tipo del documento: Article País de afiliación: China Pais de publicación: Suiza