Amorphous-Carbon-Coated 3D Solid Electrolyte for an Electro-Chemomechanically Stable Lithium Metal Anode in Solid-State Batteries

• DOI: 10.1021/acs.nanolett.1c01748
• Publication Date: 2021-07-14T15:40:02Z
• Authors: Hua Xie; Chunpeng Yang; Yaoyu Ren; Shaomao Xu; Tanner R. Hamann; Dennis Wayne McOwen; Eric D. Wachsman; Liangbing Hu
• Keywords: Carbon fibers; Amorphous carbon; Plating (geology); Lithium metal

The use of solid-state electrolyte may be necessary to enable safe, high-energy-density Li metal anodes for next-generation energy storage systems. However, the inhomogeneous local current densities during long-term cycling result in instability and detachment anode from electrolyte, which greatly hinders practical application. In this study, we report a new approach maintain stable | interface by depositing an amorphous carbon nanocoating on garnet-type electrolyte. provides both electron ion conducting capability, helps homogenize lithium stripping plating processes. After coating, find metal/garnet displays at 3 mA/cm2 more than 500 h, demonstrating interface's outstanding electro-chemomechanical stability. This work suggests coatings promising strategy achieving interfaces reliable batteries.