Lithium air battery having a cross-linked polysiloxane separator
A lithium-air battery includes a lithium anode; an air cathode; and a separator between the lithium anode and an air cathode the separator including a cross-linked polysiloxane.
1. A lithium-air battery comprising:
a lithium anode;
an air cathode; and
a separator between the lithium anode and the air cathode, the separator comprising a cross-linked polysiloxane.
2. The lithium-air battery of claim 1 , wherein the separator is a coating on a surface of the lithium anode.
3. The lithium-air battery of claim 2 , wherein the coating comprises one or more layers of the cross-linked polysiloxane on the surface of the lithium anode.
4. The lithium-air battery of claim 1 , wherein the separator further comprises a ceramic having a first surface and second surface, and the separator is disposed in the lithium-air battery, wherein the first surface is proximal to the lithium anode, and the second surface is proximal to the air cathode.
5. The lithium-air battery of claim 4 , wherein the cross-linked polysiloxane is laminated to the first surface in one or more layers of the cross-linked polysiloxane.
6. The lithium-air battery of claim 4 , wherein the ceramic comprises a glass or (Li 1+x+y Al x (Ti,Ge) 2−x Si y P 3−y O 12 ), x is 0≦x≦0.4, and y is 0<y≦0.6.
7. The lithium-air battery of claim 4 , wherein the ceramic is Li 2 O—Al 2 O 3 —SiO 2 —P 2 O 5 —TiO 2 GeO 2 .
8. A lithium-air battery comprising:
a lithium anode;
an air cathode; and
a separator between the lithium anode and the air cathode, the separator comprising an interpenetrating network polymer comprising a cross-linked polysiloxane and a second, cross-linked polymer.
9. The lithium-air battery of claim 8 , wherein the second, cross-linked polymer comprises a poly(meth)acrylate, a polyolefin, or a polyurethane.
10. A lithium-air battery comprising:
a lithium anode;
an air cathode; and
a separator between the lithium anode and the air cathode, the separator comprising a film of a cross-linked polysiloxane and a film of a second, cross-linked polymer, wherein the films are laminated together.
11. The lithium-air battery of claim 10 , wherein the second, cross-linked polymer comprises a poly(meth)acrylate, a polyolefin, or a polyurethane.
12. The lithium-air battery of claim 1 , wherein the air cathode comprises a porous carbon material.
13. The lithium-air battery of claim 12 , wherein the air cathode further comprises a metal oxide.
14. The lithium-air battery of claim 12 , wherein the air cathode further comprises a binder.
15. The lithium air battery of claim 1 , wherein the air cathode consists essentially of a porous carbon material, a catalyst of MnO 2 , a polymer binder of PVdF, and a current collector.
16. The lithium-air battery of claim 8 , wherein the separator further comprises a ceramic having a first surface and second surface, and the separator is disposed in the lithium-air battery, wherein the first surface is proximal to the lithium anode, and the second surface is proximal to the air cathode.
17. The lithium-air battery of claim 16 , wherein the cross-linked polysiloxane is laminated to the first surface in one or more layers of the cross-linked polysiloxane.
18. The lithium-air battery of claim 16 , wherein the ceramic comprises a glass or (Li 1+x+y Al x (Ti,Ge) 2−x Si y P 3−y O 12 ), x is 0≦x≦0.4, and y is 0<y≦0.6.
19. The lithium-air battery of claim 16 , wherein the ceramic is Li 2 O—Al 2 O 3 —SiO 2 —P 2 O 5 —TiO 2 GeO 2 .
20. The lithium-air battery of claim 8 , wherein the separator is a coating on a surface of the lithium anode.
21. The lithium-air battery of claim 20 , wherein the coating comprises one or more layers of the cross-linked polysiloxane on the surface of the lithium anode.
22. The lithium-air battery of claim 10 , wherein the separator is a coating on a surface of the lithium anode.
23. The lithium-air battery of claim 22 , wherein the coating comprises one or more layers of the cross-linked polysiloxane on the surface of the lithium anode.
24. The lithium-air battery of claim 10 , wherein the separator further comprises a ceramic having a first surface and second surface, and the separator is disposed in the lithium-air battery, wherein the first surface is proximal to the lithium anode, and the second surface is proximal to the air cathode.
25. The lithium-air battery of claim 24 , wherein the ceramic comprises a glass or (Li 1+x+y Al x (Ti,Ge) 2−x Si y P 3−y O 12 ), x is 0≦x≦0.4, and y is 0<y≦0.6.
26. The lithium-air battery of claim 24 , wherein the ceramic is Li 2 O—Al 2 O 3 —SiO 2 —P 2 O 5 —TiO 2 GeO 2 .