固态电池，我国科学家取得重要研究进展

Core Viewpoint - A research team led by Professor Zhang Qiang from Tsinghua University has made significant advancements in solid-state battery polymer electrolyte research, developing a novel fluorinated polyether electrolyte that enhances physical contact and ionic conductivity at solid-solid interfaces, providing new insights and technical support for high safety and high energy density solid-state lithium batteries [1][2]. Group 1 - The new fluorinated polyether electrolyte was developed using a thermal initiation in-situ polymerization technique, which effectively improves the physical contact and ionic conductivity at the solid-state interface [1]. - The research addresses two major challenges in solid-state batteries: poor interface contact due to rigid solid-solid materials and the electrolyte's compatibility with high voltage cathodes and highly reducing anodes in extreme chemical environments [1]. - The research findings were published in the journal Nature under the title "Tailoring polymer electrolyte solvation for 600 Wh kg1 lithium batteries" on September 24 [1]. Group 2 - The polymer battery assembled with the new electrolyte demonstrated excellent electrochemical performance, achieving an energy density of 604 Wh/kg under 1 MPa external pressure, significantly surpassing current commercial batteries [2]. - The battery successfully passed safety tests, including puncture and exposure to a 120°C heat chamber for six hours without any incidents of combustion or explosion, showcasing its superior safety performance [2]. - The research outcomes are expected to provide important technical references for the development of mature solid-state battery products in the future [2].