An Integrated Interfacial Design for High-Energy, Safe Solid-State Batteries

Abstract

Solid-state lithium metal batteries promise high-energy density and enhanced safety but are hindered by interfacial instability and poor electrode–electrolyte contact. Now, Qiang Zhang and colleagues have developed a fluorinated polyether-based polymer electrolyte that enables in situ formation of amorphous LiF-rich interphases on both high-voltage cathodes and lithium-free and lithium anodes, enabling a potentially high specific energy density of 604 Wh kg⁻¹ in a demo pouch cell with exceptional thermal safety.

Keywords

lithium-free anode / lithium-rich manganese-based layered oxides / polymer electrolyte / solid-state batteries

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RIGHTS & PERMISSIONS

2025 The Author(s). Energy & Environmental Materials published by John Wiley & Sons Australia, Ltd on behalf of Zhengzhou University.