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Core Insights - A research team led by Professor Zhang Qiang from Tsinghua University has made significant advancements in polymer electrolytes for lithium batteries, providing new strategies and technical support for the development of practical high-safety, high-energy-density solid-state lithium batteries [1][2] Group 1: Research Findings - The current challenges in solid-state batteries include poor interface contact due to rigid solid-solid materials and the difficulty of electrolytes to withstand extreme chemical environments with high voltage cathodes and strong reducing anodes [1] - The team proposed a new strategy called "anion-rich solvent structure design," successfully developing a novel fluorinated polyether electrolyte that enhances physical contact and ionic conductivity at solid-state interfaces [1] - The polymer battery assembled with this electrolyte demonstrated excellent electrochemical performance, achieving an energy density of 604Wh/kg under 1MPa external pressure, significantly surpassing current commercial batteries [1] Group 2: Safety and Future Implications - The battery successfully passed safety tests, including puncture and exposure to a 120°C heat chamber for 6 hours without 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]