Development of Fluorine-Free Electrolytes for Aqueous-Processed Olivine-Type Phosphate Cathodes.

ABSTRACT: Environmental impacts and resource availability are significant concerns for the future of lithium-ion batteries. This study focuses on developing novel fluorine-free electrolytes compatible with aqueous-processed cobalt-free cathode materials. The new electrolyte contains lithium 1,1,2,3,3-pentacyanopropenide (LiPCP) salt. After screening various organic carbonates, a mixture of 30:70 wt.% ethylene carbonate and dimethyl carbonate was chosen as the solvent. The optimal salt concentration, yielding the highest conductivity of 9.6 mS·cm^-1 at 20 °C, was 0.8 mol·kg^-1. Vinylene carbonate was selected as a SEI-stabilizing additive, and the electrolyte demonstrated stability up to 4.4 V vs. Li+/Li. LiFePO₄ and LiMn_0.6Fe_0.4PO₄ were

SUBMITTER: Limachi C 

PROVIDER: S-EPMC11477786 | biostudies-literature | 2024 Oct

REPOSITORIES: biostudies-literature