The United States developed a new lithium-based solid-state electrolyte material

Researchers at the U.S. National Oak Ridge National Laboratory (ORNL) have developed a new lithium-based solid-state electrolyte material, Li9N2Cl3. The material exhibits excellent lithium compatibility and atmospheric stability, and can be used to fabricate high-area-capacity, long-lasting all-solid-state lithium-metal batteries.

Li9N2Cl3 has a disordered lattice structure and vacancies, which effectively promotes lithium ion transport and resists dendrite formation at a current density of 10mA/cm2 and an area capacity of 10mAh/cm2 due to its inherent lithium metal stability. The researchers combined the material into a nickel-rich LiNi0.83Co0.11Mn0.06O2 cathode all-solid-state battery and achieved remarkable cycling stability (90.35% capacity retention after 1,500 cycles at 0.5C) and high area capacity (4.8 mAh/cm2). The related research results were published in the journal Science-Progress.