Ionic Liquid Enabled High-Energy-Density Solid-State Lithium Batteries with High-Areal-Capacity Cathode and Scaffold-Supported Composite Electrolyte.

ABSTRACT: Solid-state lithium batteries (SSLBs) with composite solid electrolytes (CSEs) offer enhanced energy density and high safety. However, their performance is hindered by large thickness and limited Li⁺ conductivity of CSEs, and large electrode/electrolyte interface resistance. This study develops an 18 µm-thick CSE using a polyethylene scaffold, which incorporates garnet-type Li_6.25La₃Zr₂Ga_0.25O₁₂ (LLZGO) oxide and an ionic liquid (IL) additive in a poly(vinylidene fluoride-co-hexafluoropropylene)/polypropylene carbonate matrix, achieving a high ionic conductivity of 8.6 × 10^-4 S cm^-1 at 30 °C. The IL increases Li⁺ conduction of the CSE and reduces the interfacial resistance. The constructed LiNi_0.8<

SUBMITTER: Kuo TY 

PROVIDER: S-EPMC12444873 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature