Single-Crystal Silicon Membranes with High Lithium Conductivity and Application in Lithium-Air Batteries

摘要

Silicon has become an intriguing anode material in lithium ion secondary batteries because of its theoretical high gravimetric and volumetric capacity for lithiation (i.e., 4200 and 1750 mA h cm~(-3), respectively). To approach the theoretical limits, the conductivity of lithium in silicon should be high because the diffusion rate of lithium in and out of silicon determines the discharge/charge speed and influences the battery performance.