Patent ID: 11955602
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 15:
16. A solid electrolyte having an Argyrodite structure for an all-solid secondary battery, the solid electrolyte comprising a compound of Formula 1:

(Li1-xNax)7-yPS6-yCly  Formula 1, wherein, in Formula 1,
molar amounts of Li and Na satisfy 0<Na/(Li+Na)≤0.07, and
x and y satisfy 0<x≤0.07 and 0≤y≤2,
wherein, the solid electrolyte has a first peak at a position of 30.01°±0.50° 2θ and a second peak at a position of 33.65°±0.50° 2θ when analyzed by X-ray diffraction using CuKα radiation,
wherein a ratio of an intensity of the second peak to an intensity of the first peak is about 0.01 to about 0.1, and
wherein the solid electrolyte has an ion conductivity of greater than 2×10−3 Siemens per centimeter to 5.1×10−3 Siemens per centimeter or less.