| abstract |
Regarding a sulfide-based solid electrolyte containing lithium, phosphorus, sulfur and halogen, Li 7-a having an Argyrodite-type crystal structure as a novel solid electrolyte capable of suppressing the generation of hydrogen sulfide and securing ion conductivity. PS 6-a Ha a (Ha represents halogen. a is 0.2 < a ≤ 1.8.) and Li 3 PS 4 In an X-ray diffraction pattern obtained by measurement by X-ray diffraction method (XRD) , the peak intensity at the diffraction angle 2θ = 24.9 to 26.3° derived from the Argyrodite crystal structure, and the peak intensity at the diffraction angle 2θ = 26.0 to 28.8° derived from Li 3 PS 4 A solid electrolyte is proposed, characterized in that the ratio is 0.04 to 0.3. |