CATHODE FELT OF SODIUM SULFUR BATTERY AND METHOD FOR MANUFACTURING THE FELT

摘要

Provided is a cathode material of a sodium-sulfur battery, comprising: a felt which are formed by sequentially depositing a plurality of plate sheets with different densities in the order of higher density, wherein the felt is bent to have a concave surface and a convex surface; plate sheets with relatively higher density are arranged on the convex surface, and plate sheets with relatively lower density are arranged on the concave surface, so that the structure of the cathode material can be compressed when being bent, thereby forming more uniform density in the thickness direction in a cathode material.