LITHIUM ION-CONDUCTIVE SOLID ELECTROLYTE, METHOD FOR PRODUCING SAME, SOLID ELECTROLYTE FOR LITHIUM SECONDARY BATTERY USING SUCH SOLID ELECTROLYTE, AND ALL-SOLID LITHIUM BATTERY USING SUCH SOLID ELECTROLYTE FOR SECONDARY BATTERY

摘要

Disclosed is a lithium ion-conductive solid electrolyte exhibiting high lithium ion conductivity even at room temperature which is hardly oxidized and free from problems of toxicity. The lithium ion-conductive solid electrolyte contains, as constituents, lithium (Li), boron (B), sulfur (S) and oxygen (O), and the ratio between sulfur and oxygen (O/S) is 0.01-1.43.