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Kinetic Evaluation on Lithium Polysulfide in Weakly Solvating Electrolyte toward Practical Lithium-Sulfur Batteries.
Li, Xi-Yao; Feng, Shuai; Song, Yun-Wei; Zhao, Chang-Xin; Li, Zheng; Chen, Zi-Xian; Cheng, Qian; Chen, Xiang; Zhang, Xue-Qiang; Li, Bo-Quan; Huang, Jia-Qi; Zhang, Qiang.
Afiliación
  • Li XY; Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China.
  • Feng S; College of Chemistry and Chemical Engineering, Taishan University, Taian, Shandong 271021, China.
  • Song YW; Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China.
  • Zhao CX; Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China.
  • Li Z; Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China.
  • Chen ZX; Advanced Research Institute of Multidisciplinary Science, Beijing Institute of Technology, Beijing 100081, China.
  • Cheng Q; School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China.
  • Chen X; Advanced Research Institute of Multidisciplinary Science, Beijing Institute of Technology, Beijing 100081, China.
  • Zhang XQ; School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China.
  • Li BQ; Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China.
  • Huang JQ; Advanced Research Institute of Multidisciplinary Science, Beijing Institute of Technology, Beijing 100081, China.
  • Zhang Q; School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China.
J Am Chem Soc ; 146(21): 14754-14764, 2024 May 29.
Article en En | MEDLINE | ID: mdl-38754363
ABSTRACT
Lithium-sulfur (Li-S) batteries are highly considered as next-generation energy storage techniques. Weakly solvating electrolyte with low lithium polysulfide (LiPS) solvating power promises Li anode protection and improved cycling stability. However, the cathodic LiPS kinetics is inevitably deteriorated, resulting in severe cathodic polarization and limited energy density. Herein, the LiPS kinetic degradation mechanism in weakly solvating electrolytes is disclosed to construct high-energy-density Li-S batteries. Activation polarization instead of concentration or ohmic polarization is identified as the dominant kinetic limitation, which originates from higher charge-transfer activation energy and a changed rate-determining step. To solve the kinetic issue, a titanium nitride (TiN) electrocatalyst is introduced and corresponding Li-S batteries exhibit reduced polarization, prolonged cycling lifespan, and high actual energy density of 381 Wh kg-1 in 2.5 Ah-level pouch cells. This work clarifies the LiPS reaction mechanism in protective weakly solvating electrolytes and highlights the electrocatalytic regulation strategy toward high-energy-density and long-cycling Li-S batteries.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: J Am Chem Soc Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Estados Unidos
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: J Am Chem Soc Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Estados Unidos