SULFIDE SOLID ELECTROLYTE FOR ALL-SOLID SECONDARY BATTERY, METHOD OF PREPARING THE SAME, AND ALL-SOLID SECONDARY BATTERY INCLUDING THE SAME
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Jan 19, 2023
app pub date -
Jul 1, 2022
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Jul 1, 2022
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A sulfide solid electrolyte for an all-solid secondary battery includes lithium, phosphorus, sulfur, oxygen, and halogen atoms, wherein the sulfide solid electrolyte has an argyrodite-type crystal structure, the halogen atoms includes chlorine and at least two of bromine, iodine, and fluorine, an atomic ratio of sulfur to oxygen in the sulfide solid electrolyte is about 4 or higher, and an atomic ratio of chlorine to the at least two of bromine, iodine, and fluorine is about 9 or higher.
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