Solid electrolyte compositions for electrochemical cells
A solid-state electrolyte including an ion-conducting inorganic material represented by the formula Li 1+y Zr 2−x Me x (PO 4 ) 3 where 2>x>0, 0.2>y>−0.2, and Me is at least one element from Group 14, Group 6, Group 5, or combinations thereof.
1. A lithium ion battery, comprising:
a lithium-based anode;
a cathode comprising an active material; and
a solid-state electrolyte comprising a polymer binder and an ion-conducting inorganic material represented by the formula:
Li 1+y Zr 2−x Me x (PO 4 ) 3
where 2>x>0, 0.2>y>−0.2, and Me is tin (Sn), niobium (Nb), or combinations thereof, and a concentration of the ion-conducting inorganic material is no less than 61% by weight and no greater than 84% by weight relative to a total weight of the solid-state electrolyte.
2. The lithium ion battery of claim 1 , wherein Me is tin (Sn).
3. The lithium ion battery of claim 1 , wherein Me is niobium (Nb).
4. The lithium ion battery of claim 1 wherein the polymer binder comprises PVdF.
5. The lithium ion battery of claim 1 , wherein the solid-state electrolyte further comprises a lithium salt.
6. The lithium ion battery of claim 5 , wherein the lithium salt is selected from the group consisting of lithium bis(trifluoromethanesulfonyl)imide (CF 3 SO 2 NLiSO 2 CF 3 ), lithium tetrafluoroborate (LiBF 4 ), lithium hexafluoroarsenate (LiAsF 6 ), lithium bis(oxalato)borate (LiB(C 2 O 4 ) 2 ), lithium chlorate (LiClO 4 ), lithium hexafluorophosphate (LiPF 6 ), lithium triflate (LiCF 3 SO 3 ), lithium bis(fluorosulfonyl)imide (LiFSi), or combinations thereof.
7. The lithium ion battery of claim 5 wherein the lithium salt comprises lithium bis(trifluoromethanesulfonyl)imide (CF 3 SO 2 NLiSO 2 CF 3 ).
8. The lithium ion battery of claim 1 , wherein Me is the combination of niobium (Nb) and tin (Sn).
9. The lithium ion battery of claim 1 , wherein the solid-state electrolyte lacks a solvent.
10. A lithium ion battery, comprising:
a lithium-based anode;
a cathode comprising an active material; and
a solid-state electrolyte comprising an ion-conducting inorganic material represented by the formula:
Li 1+y Zr 2−x Me x (PO 4 ) 3
where 2>x>0, 0.2>y>−0.2, and Me is tin (Sn) or a combination of niobium (Nb) and tin (Sn), and wherein the solid-state electrolyte lacks a solvent.
11. The lithium ion battery of claim 10 , wherein the solid-state electrolyte further comprises a polymer binder.
12. The lithium ion battery of claim 11 , wherein the polymer binder comprises PVdF.
13. The lithium ion battery of claim 10 , wherein the solid-state electrolyte further comprises a lithium salt.
14. The lithium ion battery of claim 13 , wherein the lithium salt is selected from the group consisting of lithium bis(trifluoromethanesulfonyl)imide (CF 3 SO 2 NLiSO 2 CF 3 ), lithium tetrafluoroborate (LiBF 4 ), lithium hexafluoroarsenate (LiAsF 6 ), lithium bis(oxalato)borate (LiB(C 2 O 4 ) 2 ), lithium chlorate (LiClO 4 ), lithium hexafluorophosphate (LiPF 6 ), lithium triflate (LiCF 3 SO 3 ), lithium bis(fluorosulfonyl)imide (LiFSi), or combinations thereof.
15. The lithium ion battery of claim 13 , wherein the lithium salt comprises lithium bis(trifluoromethanesulfonyl)imide (CF 3 SO 2 NLiSO 2 CF 3 ).
16. The lithium ion battery of claim 10 , wherein Me is the combination of niobium (Nb) and tin (Sn).
17. The lithium ion battery of claim 10 , wherein a concentration of the ion-conducting inorganic material is no less than 61% by weight and no greater than 84% by weight relative to a total weight of the solid-state electrolyte.
18. A lithium ion battery, comprising:
a lithium-based anode;
a cathode comprising an active material; and
a solid-state electrolyte comprising an ion-conducting inorganic material represented by the formula:
Li 1+y Zr 2−x Me x (PO 4 ) 3
where 2>x>0, 0.2>y>−0.2, and Me is a combination of niobium (Nb) and tin (Sn).