Large-Scale Nanofiber Manufacturing| Decoupling Interfacial Stability and lon Transport in SolidPolymer Electrolyte by Tailored Ligand Chemistry for LithiumMetal Battery

Prof. Yueping Xiong at Harbin Institute of Technology: Novel Polymer Electrolyte Enhances Interfacial Stability and Ion Transport

Challenge: Creating optimal Li⁺ coordination environments for ideal interfacial chemistry remains difficult. Simultaneously achieving fast ion transport kinetics and high interfacial stability poses a significant challenge for polymer electrolytes in solid-state lithium batteries.

Approach: Prof. Yueping Xiong and Assistant Prof. Yingmin Jin's team at Harbin Institute of Technology developed a hierarchical composite electrolyte by leveraging the tunable properties of organic ligands in metal-organic frameworks (MOFs). They incorporated heterogeneous and spatially confined MOF nanofillers into a poly(1,3-dioxolane) matrix.

Innovation 1: The assembled Li||LiFePO₄ full cell demonstrated exceptional cycling stability, maintaining 92.7% capacity retention after 2,000 cycles at 2C rate.

Innovation 2: The developed electrolyte showed outstanding compatibility with high-voltage cathodes, achieving 80% capacity retention after 630 cycles with LiNi₀.₅Co₀.₂Mn₀.₃O₂.