Method for manufacturing solid electrolyte membrane for all solid type battery and solid electrolyte membrane manufactured by the method

Abstract

A solid electrolyte membrane and method of preparing, including a plurality of polymer filaments arranged crossed as a 3-dimensional structure in the form of a net of nonwoven fabric-like shape, and a plurality of inorganic solid electrolytes inserted and uniformly distributed in the structure. By this structural feature, a large amount of solid electrolyte particles are uniformly distributed and filled in the electrolyte membrane, contact between the particles is good, and ionic conduction paths are sufficiently provided. Additionally, the durability of the solid electrolyte membrane is improved by the 3-dimensional structure, and the flexibility and strength increase. The nonwoven fabric composite solid electrolyte membrane has an effect in preventing inorganic solid electrolyte particle from being disconnected therefrom.