Modulation of the Oxidation End-Product Toward Polysulfides-Free and Sustainable Lithium-Pyrite Thermal Batteries.

ABSTRACT: The FeS₂ has abundant reserves and a high specific capacity (894 mAh g^-1 ), commonly used to fabricate Li-FeS₂ primary batteries, like LiM_x -FeS₂ thermal batteries (working at ≈500 °C). However, Li-FeS₂ batteries struggle to function as rechargeable batteries due to serious issues such as pulverization and polysulfide shuttling. Herein, highly reversible solid-state Li-FeS₂ batteries operating at 300 °C are designed. Molten salt-based FeS₂ slurry cathodes address the notorious electrode pulverization problem by encapsulating pulverized particles in time with e^- and Li⁺ flow conductors. In addition, the solid electrolyte LLZTO tube serves as a hard separator and fast Li⁺ channel, ef

SUBMITTER: Jin Y 

PROVIDER: S-EPMC9951353 | biostudies-literature | 2023 Feb

REPOSITORIES: biostudies-literature