An inorganic-rich but LiF-free interphase for fast charging and long cycle life lithium metal batteries.

ABSTRACT: Li metal batteries using Li metal as negative electrode and LiNi_1-x-yMn_xCo_yO₂ as positive electrode represent the next generation high-energy batteries. A major challenge facing these batteries is finding electrolytes capable of forming good interphases. Conventionally, electrolyte is fluorinated to generate anion-derived LiF-rich interphases. However, their low ionic conductivities forbid fast-charging. Here, we use CsNO₃ as a dual-functional additive to form stable interphases on both electrodes. Such strategy allows the use of 1,2-dimethoxyethane as the single solvent, promising superior ion transport and fast charging. LiNi_1-x-yMn_xCo_yO₂ is protected by the nitrate-derived species. On the

SUBMITTER: Rahman MM 

PROVIDER: S-EPMC10728193 | biostudies-literature | 2023 Dec

REPOSITORIES: biostudies-literature