High-voltage and intrinsically safe electrolytes for Li metal batteries.

ABSTRACT: Current electrolytes of mixing different functional solvents inherit both merits and weaknesses of each solvent, thus cannot simultaneously meet all the requirements of high energy, long cycle life, and high safety for Li metal batteries (LMBs). Here, we design a high voltage and safe electrolyte (VSE) by integrating different functional groups into one molecule. The VSE electrolyte has a wide electrochemical stability window of ~5.6 V enabling a Li anode to achieve high Coulombic efficiency of >99.3%, Li | |LiNi_0.8Co_0.1Mn_0.1O₂ coin cell to maintain capacity retention of 92% after 500 cycles, and the 3.5-Ah-grade Li | |LiNi_0.8Co_0.1Mn_0.1O₂ pouch cell to deliver a high energy density of 531 Wh kg^-1</

SUBMITTER: Xu Z 

PROVIDER: S-EPMC11564819 | biostudies-literature | 2024 Nov

REPOSITORIES: biostudies-literature