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Intrinsic Nonflammable Ether Electrolytes for Ultrahigh-Voltage Lithium Metal Batteries Enabled by Chlorine Functionality.
Tan, Lijiang; Chen, Shunqiang; Chen, Yawei; Fan, Jiajia; Ruan, Digen; Nian, Qingshun; Chen, Li; Jiao, Shuhong; Ren, Xiaodi.
Afiliación
  • Tan L; Department of Materials Science and Engineering, University of Science and Technology of China, Hefei, 230026, China.
  • Chen S; Department of Materials Science and Engineering, University of Science and Technology of China, Hefei, 230026, China.
  • Chen Y; Department of Materials Science and Engineering, University of Science and Technology of China, Hefei, 230026, China.
  • Fan J; Department of Materials Science and Engineering, University of Science and Technology of China, Hefei, 230026, China.
  • Ruan D; Department of Materials Science and Engineering, University of Science and Technology of China, Hefei, 230026, China.
  • Nian Q; Department of Materials Science and Engineering, University of Science and Technology of China, Hefei, 230026, China.
  • Chen L; Department of Materials Science and Engineering, University of Science and Technology of China, Hefei, 230026, China.
  • Jiao S; Key Laboratory of Structure and Functional Regulation of Hybrid Materials, Anhui University, Hefei, 230601, China.
  • Ren X; Department of Materials Science and Engineering, University of Science and Technology of China, Hefei, 230026, China.
Angew Chem Int Ed Engl ; 61(32): e202203693, 2022 Aug 08.
Article en En | MEDLINE | ID: mdl-35388586
The issues of inherent low anodic stability and high flammability hinder the deployment of the ether-based electrolytes in practical high-voltage lithium metal batteries. Here, we report a rationally designed ether-based electrolyte with chlorine functionality on ether molecular structure to address these critical challenges. The chloroether-based electrolyte demonstrates a high Li Coulombic efficiency of 99.2 % and a high capacity retention >88 % over 200 cycles for Ni-rich cathodes at an ultrahigh cut-off voltage of 4.6 V (stable even up to 4.7 V). The chloroether-based electrolyte not only greatly improves electrochemical stabilities of Ni-rich cathodes under ultrahigh voltages with interphases riched in LiF and LiCl, but possesses the intrinsic nonflammable safety feature owing to the flame-retarding ability of chlorine functional groups. This study offers a new approach to enable ether-based electrolytes for high energy density, long-life and safe Li metal batteries.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Angew Chem Int Ed Engl Año: 2022 Tipo del documento: Article País de afiliación: China Pais de publicación: Alemania
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Angew Chem Int Ed Engl Año: 2022 Tipo del documento: Article País de afiliación: China Pais de publicación: Alemania