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Salt-in-Salt Reinforced Carbonate Electrolyte for Li Metal Batteries.
Liu, Sufu; Xia, Jiale; Zhang, Weiran; Wan, Hongli; Zhang, Jiaxun; Xu, Jijian; Rao, Jiancun; Deng, Tao; Hou, Singyuk; Nan, Bo; Wang, Chunsheng.
Afiliación
  • Liu S; Department of Chemical and Biomolecular Engineering, University of Maryland, College Park, MD 20740, USA.
  • Xia J; Department of Chemical and Biomolecular Engineering, University of Maryland, College Park, MD 20740, USA.
  • Zhang W; Department of Materials Science and Engineering, University of Maryland, College Park, MD 20740, USA.
  • Wan H; Department of Chemical and Biomolecular Engineering, University of Maryland, College Park, MD 20740, USA.
  • Zhang J; Department of Chemical and Biomolecular Engineering, University of Maryland, College Park, MD 20740, USA.
  • Xu J; Department of Chemical and Biomolecular Engineering, University of Maryland, College Park, MD 20740, USA.
  • Rao J; Maryland Nanocenter, University of Maryland, College Park, MD 20740, USA.
  • Deng T; Department of Chemical and Biomolecular Engineering, University of Maryland, College Park, MD 20740, USA.
  • Hou S; Department of Chemical and Biomolecular Engineering, University of Maryland, College Park, MD 20740, USA.
  • Nan B; Department of Chemical and Biomolecular Engineering, University of Maryland, College Park, MD 20740, USA.
  • Wang C; Department of Chemical and Biomolecular Engineering, University of Maryland, College Park, MD 20740, USA.
Angew Chem Int Ed Engl ; 61(43): e202210522, 2022 Oct 24.
Article en En | MEDLINE | ID: mdl-36040840
The instability of carbonate electrolyte with metallic Li greatly limits its application in high-voltage Li metal batteries. Here, a "salt-in-salt" strategy is applied to boost the LiNO3 solubility in the carbonate electrolyte with Mg(TFSI)2 carrier, which enables the inorganic-rich solid electrolyte interphase (SEI) for excellent Li metal anode performance and also maintains the cathode stability. In the designed electrolyte, both NO3 - and PF6 - anions participate in the Li+ -solvent complexes, thus promoting the formation of inorganic-rich SEI. Our designed electrolyte has achieved a superior Li CE of 99.7 %, enabling the high-loading NCM811||Li (4.5 mAh cm-2 ) full cell with N/P ratio of 1.92 to achieve 84.6 % capacity retention after 200 cycles. The enhancement of LiNO3 solubility by divalent salts is universal, which will also inspire the electrolyte design for other 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: Estados Unidos Pais de publicación: Alemania
Texto completo
Añadir a Mi BVS
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XML
PubMed Links
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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: Estados Unidos Pais de publicación: Alemania