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US 2024/0322227 A1Published application
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.
Claims15
1:
- A metal element-comprising sulfide solid electrolyte, comprising:
- Li;
- S;
- P;
- a halogen element, and
- a metal element of Periodic Table Group 3 to 12 and Period 4 or higher,
- wherein an Li/P molar ratio in the metal element-comprising sulfide solid electrolyte is in a range of from 2.4 to 12, and
- wherein an S/P molar ratio of the S to the P in the metal element-comprising sulfide solid electrolyte is in a range of from 3.7 to 12.
5 more elements
2:
- The electrolyte of claim 1, having an (M/P) molar ratio of the metal element to the P is in a range of from more than 0 to 2.
3:
- The electrolyte of claim 1, wherein the metal element does not comprise Ba or Ti.
4:
- The electrolyte of claim 1, wherein the metal element comprises a metal element from Periodic Table Group 4 to 12 and Period 4 or higher.
5:
- The electrolyte of claim 1, wherein the metal element comprises a metal element from Periodic Table Group 6 to 12 and Period 4 or higher.
6:
- The electrolyte of claim 1, wherein the metal element comprises a metal element from Periodic Table Group 4, 5, or 12 and Period 4 or higher.
7:
- The electrolyte of claim 1, wherein the metal element comprises Ca, V, Mn, Fe, Co, Ni, Cu, Zn, Zr, Mo, and/or Ag.
8:
- The electrolyte of claim 1, wherein the M/P molar ratio of the metal element to the P is in a range of from 0.001 to 2.
9:
- The electrolyte of claim 1, wherein the M/P molar ratio of the metal element to the P is 0.03 or less.
10:
- The electrolyte of claim 1, wherein the M/P molar ratio of the metal element to the P is in a range of from 0.001 to 2,
- wherein the halogen element comprises Cl, Br, and/or I, and
- wherein the metal element comprises Mn, Fe, and/or Zn.
11:
- A method for producing a metal element-comprising sulfide solid electrolyte, the method comprising:
- bringing into contact, with a metal compound, (i) a sulfide solid electrolyte comprising Li, S, and P, or (ii) two or more starting materials together comprising a Li, S, and P,
- wherein an Li/P molar ratio in the metal element-containing sulfide solid electrolyte is in a range of from 2.4 to 12,
- wherein an S/P molar ratio in the metal element-containing sulfide solid electrolyte is in a range of from 3.7 to 12, and
- wherein the metal compound comprises a metal element from Periodic Table Group 3 to 12 and Period 4 or higher.
2 more elements
:
- The method of claim 11, wherein an M/P molar ratio of the metal element to the P is in a range of from more than 0 to 2.
:
- The method of claim 11, wherein the metal compound comprises
- a metal halide comprising a halogen element and the metal element, and/or
- a metal sulfide comprising S and the metal element.
:
- The method of claim 11, wherein the sulfide solid electrolyte or the starting material further comprises a halogen element.
:
- The method of claim 11, wherein the halogen element in the sulfide solid electrolyte is the same as the halogen element of the metal halide.