On October 15, 2025, the Institute of Chemistry of the Chinese Academy of Sciences announced that its research and development team had made a major breakthrough in the field of polysiloxane solid electrolyte. Through the design of the main chain structure, side chain modification, and topological network regulation technology, the team successfully increased the room temperature ion conductivity to three times that of traditional materials, while solving the problem of uncontrolled interface reactions, increasing the lithium ion migration number to over 0.8, and achieving UL94 V-0 level flame retardant performance.


This technology optimizes the solubility of lithium salts in the polysiloxane matrix by introducing polar side chains, achieving a dual improvement in electrolyte mechanical strength and electrochemical performance while ensuring high thermal stability and wide temperature range flexibility. Experimental data shows that the all solid state battery using this material has a cycle life exceeding 2000 times, an energy density 40% higher than traditional liquid batteries, and maintains stable performance even under extreme temperature differences of -40 ℃ to 85 ℃.


This breakthrough has cleared key obstacles for the large-scale application of efficient energy storage devices, "said project leader and researcher Fei Huafeng." Polysilicon based solid electrolytes are expected to be the first to be applied in new energy vehicle power batteries and grid level energy storage systems, promoting the industry's transformation towards safety and high density. At present, the team is collaborating with several leading enterprises to promote pilot testing, and it is expected to achieve industrialization by 2026.


Industry experts point out that with the acceleration of global energy structure transformation, the solid-state battery market will exceed 100 billion yuan by 2030, and polysiloxane materials, with their unique molecular designability, will become the core carrier of the next generation of energy storage technology. This breakthrough not only consolidates China's global leading position in the field of organic silicon, but also provides key material support for the high-quality development of the new energy industry under the "dual carbon" goal.