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US 11,699,812 B2Granted
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.
Claims20
A sulfide solid electrolyte comprising at least Li2S, P2S5 and a dopant MxS2O3, characterized in that, M is one or more selected from Na and K, and 1≤x≤2;
- in the sulfide solid electrolyte,
- a mole percentage of Li2S is greater than or equal to 60% and is less than or equal to 79%,
- a mole percentage of P2S5 is greater than or equal to 16% and is less than or equal to 30%, and
- a molar percentage of MxS2O3 is greater than 0% and is less than or equal to 10%.
1 more element
Dependencies are inferred from the claim text.