A painted layer for high-rate and high-capacity solid-state lithium–metal batteries

Abstract

A flake-graphite painted layer (an electron/ion dual-conductive framework) was prepared by a spraying method and the resulting improved interface contact between a lithium–metal anode and garnet electrolyte was demonstrated. Experiments showed that a large decrease in the interface resistance, from 3062 to 40 Ω cm², was obtained. Besides a long cycling performance, the new interface also endured a tremendous Li volume change of 4.8 μm cm⁻² in each stripping/plating step.