全固态电池实现超低温稳定运行

Core Insights - A new type of halide electrolyte with ultra-high ionic conductivity has been developed, enabling stable operation of all-solid-state batteries in ultra-low temperature environments [1][4] - The research team has successfully created a mixed anion structural design strategy, resulting in a highly crystalline oxygen-containing halide Li3Ta3O4Cl10, which allows for three-dimensional continuous lithium ion transport [2][4] - The all-solid-state battery based on this new electrolyte has demonstrated over 4000 cycles of stable operation at room temperature and over 2000 cycles at -50 degrees Celsius, showcasing excellent low-temperature cycling stability [4] Group 1 - The core material of all-solid-state batteries, solid electrolyte materials, is a major research focus, with halides emerging as a new direction due to issues with sulfides [1][2] - The breakthrough in understanding lithium ion conduction mechanisms in amorphous oxygen-containing halides has been a key challenge in developing high ionic conductivity halide electrolytes [1][2] Group 2 - The new halide-based solid electrolyte has set a record for room temperature ionic conductivity at 13.7 mS/cm, surpassing previous benchmarks [2] - The research provides a new technical pathway for the preparation of ultra-stable all-solid-state batteries, potentially accelerating their transition from laboratory to practical applications [4]