High-Performance LiF@C-Coated FeF₃·0.33H₂O Lithium-Ion Batteries with an Ionic Liquid Electrolyte.

ABSTRACT: A new lithium-ion battery cathode material of LiF@C-coated FeF₃·0.33H₂O of 20 nm primary particles and 200-500 nm secondary particles is synthesized. The redox reaction mechanisms of the new cathode material and the influence of different electrolytes on the electrochemical performance of LiF@C-coated FeF₃·0.33H₂O are investigated. We show that LiF@C-coated FeF₃·0.33H₂O using a LiFSI/Pyr_1,3 FSI ionic liquid electrolyte exhibits high reversible capacities of 330.2 and 147.6 mAh g^-1 at 200 and 3600 mA g^-1, respectively, as well as maintains high capacity over cycling. Electrochemical characterization shows that the high performance is attributed to higher electronic conductivity of the coating,

SUBMITTER: Zeng C 

PROVIDER: S-EPMC8756601 | biostudies-literature | 2022 Jan

REPOSITORIES: biostudies-literature