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Tuning the D-Band Center of Bi2S3─MoS2 Heterostructure Towards Superior Lithium-Sulfur Batteries.
Li, Yanan; Li, Tengyu; Deng, Yirui; Tang, Wenhao; Wu, Hao; Feng, Ming; Yan, Peng; Liu, Ruiping.
Afiliação
  • Li Y; School of Chemical & Environmental Engineering, China University of Mining & Technology (Beijing), Beijing, 100083, P. R. China.
  • Li T; Shenzhen Institute of Advanced Electronic Materials, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, P. R. China.
  • Deng Y; School of Chemical & Environmental Engineering, China University of Mining & Technology (Beijing), Beijing, 100083, P. R. China.
  • Tang W; School of Chemical & Environmental Engineering, China University of Mining & Technology (Beijing), Beijing, 100083, P. R. China.
  • Wu H; School of Chemical & Environmental Engineering, China University of Mining & Technology (Beijing), Beijing, 100083, P. R. China.
  • Feng M; Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun, 130103, P. R. China.
  • Yan P; School of Chemical & Environmental Engineering, China University of Mining & Technology (Beijing), Beijing, 100083, P. R. China.
  • Liu R; School of Chemical & Environmental Engineering, China University of Mining & Technology (Beijing), Beijing, 100083, P. R. China.
Small ; 20(40): e2401921, 2024 Oct.
Article em En | MEDLINE | ID: mdl-38813749
ABSTRACT
Lithium-sulfur (Li-S) batteries are one of the most promising energy storage devices due to their environmental friendliness, low cost, and high specific capacity. However, the slow electrochemical kinetics and the "shuttle effect" have seriously hindered their commercialization. Herein, the nanoflower Bi2S3─MoS2 (BMS) heterostructure is synthesized by a two-step hydrothermal method, and then the Bi2S3─MoS2-Polypropylene (BMS-PP) interlayer is constructed. The heterostructure is rich in active sites, in which BMS has strong adsorption to lithium polysulfides (LiPSs) and can effectively anchor LiPSs while catalyzing LiPSs and promote the redox of Li2S at the same time, which can improve the utilization of active substances. More importantly, the d-band center can be tuned by the formation of Bi2S3─MoS2 heterostructure. Thus, Li-S batteries containing the BMS-PP interlayer show excellent rate performance (841.6 mAh g-1 at 5 C) and cycling performance (70.3% capacity retention after 500 cycles at 3 C). This work provides a new route for high-performance lithium-sulfur batteries.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Ano de publicação: 2024 Tipo de documento: Article

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Ano de publicação: 2024 Tipo de documento: Article