Sulfide solid electrolyte
A sulfide solid electrolyte containing the following (A) and (B): (A) a sulfide solid electrolyte having an argyrodite-type crystal structure; and (B) a sulfide solid electrolyte having a crystal structure different from the argyrodite-type crystal structure of the above-mentioned (A).
1. A sulfide solid electrolyte, comprising:
(A) a sulfide solid electrolyte having an argyrodite-type crystal structure, and
(B) a sulfide solid electrolyte having a crystal structure different from the argyrodite type crystal structure of the sulfide solid electrolyte (A),
wherein (B) has exothermic peaks in the range of 150 to 350° C. in thermogravimetry-differential thermal analysis.
2. The sulfide solid electrolyte of claim 1 , wherein the sulfide solid electrolyte (A) comprises lithium, sulfur, phosphorus, and at least one halogen as constituent elements.
3. The sulfide solid electrolyte of claim 2 , wherein the at least one halogen is Cl or Br.
4. The sulfide solid electrolyte of claim 2 , wherein the at least one halogen is Cl and Br.
5. The sulfide solid electrolyte of claim 1 , wherein the sulfide solid electrolyte (B) has a thio-LISICON Region II-type crystal structure or a crystal structure similar to the thio-LISICON Region II-type crystal structure.
6. The sulfide solid electrolyte of claim 5 , wherein the sulfide solid electrolyte (B) comprises lithium, sulfur, phosphorus, and at least one halogen as constituent elements.
7. The sulfide solid electrolyte of claim 6 , wherein the at least one halogen comprises Br.
8. The sulfide solid electrolyte of claim 1 , wherein a mass ratio of (A) and (B) [(A):(B)] is 5:95 to 95:5.
9. An electrode mix, comprising the sulfide solid electrolyte of claim 1 and an active material.
10. A lithium ion battery, comprising at least one sulfide solid electrolyte of claim 1 and an electrode mix comprising an active material and at least one of the at least one sulfide solid electrolyte.
11. The sulfide solid electrolyte according to claim 1 , wherein
the sulfide solid electrolyte (A) comprises lithium, sulfur, phosphorus, and at least one halogen as constituent elements, and
the sulfide solid electrolyte (B) has a thio-LISICON Region II-type crystal structure or a crystal structure similar to the thio-LISICON Region II-type crystal structure.
12. The sulfide solid electrolyte according to claim 1 , wherein
the sulfide solid electrolyte (A) comprises lithium, sulfur, phosphorus, and at least one halogen as constituent elements,
the sulfide solid electrolyte (B) comprises lithium, sulfur, phosphorus, and at least one halogen as constituent elements, and
the at least one halogen of (B) comprises Br.
13. The sulfide solid electrolyte according to claim 1 , wherein
the sulfide solid electrolyte (A) comprises lithium, sulfur, phosphorus, and at least one halogen as constituent elements,
the sulfide solid electrolyte (B) comprises lithium, sulfur, phosphorus, and at least one halogen as constituent elements,
the at least one halogen of (B) comprises Br, and
a mass ratio of (A) and (B) [(A):(B)] is 5:95 to 95:5.
14. The sulfide solid electrolyte according to claim 1 , wherein
the sulfide solid electrolyte (A) comprises lithium, sulfur, phosphorus, and at least one halogen as constituent elements,
the at least one halogen of (A) is Cl or Br, and
the sulfide solid electrolyte (B) has a thio-LISICON Region II-type crystal structure or a crystal structure similar to the thio-LISICON Region II-type crystal structure.
15. The sulfide solid electrolyte according to claim 1 , wherein
the sulfide solid electrolyte (A) comprises lithium, sulfur, phosphorus, and at least one halogen as constituent elements,
the at least one halogen of (A) is Cl or Br,
the sulfide solid electrolyte (B) comprises lithium, sulfur, phosphorus, and at least one halogen as constituent elements, and
the at least one halogen of (B) comprises Br.
16. The sulfide solid electrolyte according to claim 1 , wherein
the sulfide solid electrolyte (A) comprises lithium, sulfur, phosphorus, and at least one halogen as constituent elements,
the at least one halogen of (A) is Cl or Br,
the sulfide solid electrolyte (B) comprises lithium, sulfur, phosphorus, and at least one halogen as constituent elements,
the at least one halogen of (B) comprises Br, and
a mass ratio of (A) and (B) [(A):(B)] is 5:95 to 95:5.
17. The sulfide solid electrolyte according to claim 1 , wherein
the sulfide solid electrolyte (A) comprises lithium, sulfur, phosphorus, and at least one halogen as constituent elements,
the at least one halogen of (A) is Cl and Br, and
the sulfide solid electrolyte (B) has a thio-LISICON Region II-type crystal structure or a crystal structure similar to the thio-LISICON Region II-type crystal structure.
18. The sulfide solid electrolyte according to claim 1 , wherein
the sulfide solid electrolyte (A) comprises lithium, sulfur, phosphorus, and at least one halogen as constituent elements,
the at least one halogen of (A) is Cl and Br,
the sulfide solid electrolyte (B) comprises lithium, sulfur, phosphorus, and at least one halogen as constituent elements, and
the at least one halogen of (B) comprises Br.
19. The sulfide solid electrolyte according to claim 1 , wherein
the sulfide solid electrolyte (A) comprises lithium, sulfur, phosphorus, and at least one halogen as constituent elements,
the at least one halogen of (A) is Cl and Br,
the sulfide solid electrolyte (B) comprises lithium, sulfur, phosphorus, and at least one halogen as constituent elements,
the at least one halogen of (B) comprises Br, and
a mass ratio of (A) and (B) [(A):(B)] is 5:95 to 95:5.
20. The sulfide solid electrolyte according to claim 1 , wherein
the sulfide solid electrolyte (B) has a thio-LISICON Region II-type crystal structure or a crystal structure similar to the thio-LISICON Region II-type crystal structure, and
a mass ratio of (A) and (B) [(A):(B)] is 5:95 to 95:5.
21. The sulfide solid electrolyte of claim 1 , wherein the (A) and (B) are different particles.