Metal element-containing sulfide-type solid electrolyte and method for producing same
AssigneeIdemitsu Kosan Co., Ltd.
InventorHiroaki Yamada
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Abstract
A metal element-containing sulfide solid electrolyte may suppress H2S generation. Such a metal element-containing sulfide solid electrolyte may include a lithium element, a sulfur element, a phosphorus element, a halogen element, and at least one metal element selected from metal elements of Groups 3 to 12 and Period 4 or higher of the Periodic Table, in which the molar ratio of the lithium element to the phosphorus element (Li/P) is 2.4 or more and 12 or less, and the molar ratio of the sulfur element to the phosphorus element (S/P) is 3.7 or more and 12 or less.
Claims17
A metal element-comprising sulfide solid electrolyte, comprising:
- a sulfide solid electrolyte comprising Li, S, P, a halogen element, and a metal element comprising at least one metal element selected from the group consisting of V, Mn, Fe, Co, Ni, Cu, Zn, Zr, Mo and Ag,
- wherein an Li/P molar ratio in the sulfide solid electrolyte is in a range of from 2.4 to 12, and an S/P molar ratio of the S to the P in the sulfide solid electrolyte is in a range of from 3.7 to 12, and
- an M/P molar ratio of the metal element to the P is in a range of from more than 0 to 0.03.
A method for producing a metal element-comprising sulfide solid electrolyte, the method comprising:
- bringing into contact, with a metal compound, a sulfide solid electrolyte comprising Li, S, and P, or two or more starting materials together comprising a Li, S, and P,
- wherein an Li/P molar ratio in the sulfide solid electrolyte is in a range of from 2.4 to 12,
- an M/P molar ratio of the metal element to the P is in a range of from more than 0 to 0.03,
- an S/P molar ratio in the sulfide solid electrolyte is in a range of from 3.7 to 12, and
- the metal compound comprises at least one metal element selected from the group consisting of V, Mn, Fe, Co, Ni, Cu, Zn, Zr, Mo, and Ag.
Dependencies are inferred from the claim text.