Sulfide solid electrolyte and method for the preparation thereof, all-solid-state lithium secondary battery, and apparatus containing the same
AssigneeContemporary Amperex Technology Co., Limited
InventorsChengdu LIANG, Jiawei FU, Chengyong LIU, Yongsheng GUO, Bobing HU
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Abstract
The present application discloses a sulfide solid electrolyte and a method for the preparation thereof, an all solid state lithium secondary battery, and an apparatus containing the all solid state lithium secondary battery. The sulfide solid electrolyte is obtained by compounding at least Li2S, P2S5 and a dopant MxS2O3, wherein M is one or more selected from Na, K, Ba and Ca, and 1≤x≤2.
Claims15
A sulfide solid electrolyte obtained by compounding at least Li2S, P2S5 and a dopant MxS2O3, wherein M is one or more selected from Na, K, Ba and Ca, and 1≤x≤2.
A method for the preparation of a sulfide solid electrolyte, comprising:
- performing a ball milling treatment on Li2S, P2S5 and the dopant MxS2O3 in the presence of an organic solvent to obtain an incipient wet material;
- removing the organic solvent from the incipient wet material to obtain a mixed material;
- and
- performing a heat treatment on the mixed material at a temperature of 150° C. to 450° C. for 0.5 h to 20 h to obtain the sulfide solid electrolyte.
Dependencies are inferred from the claim text.