Solid electrolyte, all-solid-state battery, solid electrolyte solution, and method for producing solid electrolyte

• Main Authors: SASAKI IZURU, NAGAMINE KENTA, YABE HIROKI
• Format: Patent
• Language: Chinese; English
• Published: 21.07.2023
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

The invention provides a solid electrolyte, an all-solid-state battery, a solid electrolyte solution, and a method for producing the solid electrolyte. The solid electrolyte contains lithium, phosphorus, sulfur, and a halogen, and when the solid electrolyte is measured by a TG-MS method, a first peak caused by cyclic sulfur appears in a temperature range of 170 DEG C or more and less than 250 DEG C, a second peak caused by cyclic sulfur appears in a temperature range of 250 DEG C or more and less than 300 DEG C, and the peak intensity (P1) of the first peak is higher than the peak intensity (P2) of the second peak. 本公开提供固体电解质、全固体电池、固体电解质溶液、以及固体电解质的制造方法。固体电解质包含锂、磷、硫和卤素，在采用TG-MS法对固体电解质进行测定时，在170℃以上且低于250℃的温度范围出现由环状硫引起的第1峰，在250℃以上且低于300℃的温度范围出现由环状硫引起的第2峰，第1峰的峰强度(P1)高于第2峰的峰强度(P2)。