Coating for separator or cathode of lithium—sulfur or silicon—sulfur battery
View Patent ↗A battery with a sulfur-containing cathode, an anode, and a separator between the cathode and the anode has a coating comprising a single-lithium ion conductor on at least one of the cathode or the separator.
1. A battery comprising:
a sulfur-containing cathode;
an anode; and
a separator between the sulfur-containing cathode and the anode, wherein the sulfur-containing cathode has a coating comprising a single-lithium ion conductor;
wherein the single-lithium ion conductor comprises a polymeric lithium salt;
wherein the polymeric lithium salt is a polymer having a polysulfone backbone with pendent lithium bis(trifluoromethanesulfonyl)imide groups.
2. A battery according to claim 1 , wherein the coating further comprises a binder.
3. A battery according to claim 1 , wherein the anode is a lithium-containing anode or a silicon-containing anode.
4. A device comprising a battery according to claim 1 .
5. A battery comprising:
a sulfur-containing cathode;
an anode; and
a separator between the sulfur-containing cathode and the anode, wherein the separator has a coating comprising a single-lithium ion conductor;
wherein the single-lithium ion conductor comprises a polymeric lithium salt;
wherein the polymeric lithium salt is a polymer having a polysulfone backbone with pendent lithium bis(trifluoromethanesulfonyl)imide groups.
6. A battery according to claim 5 , wherein the coating further comprises a binder.
7. A battery according to claim 5 , wherein the anode is a lithium-containing anode or a silicon-containing anode.
8. A device comprising a battery according to claim 5 .
9. A method of improving cycling stability of a battery having a sulfur-containing cathode, an anode, and a separator between the sulfur-containing cathode and the anode, the method comprising:
applying a coating comprising a single-lithium ion conductor to at least one of the sulfur-containing cathode and the separator;
wherein the single-lithium ion conductor comprises a polymeric lithium salt;
wherein the polymeric lithium salt is a polymer having a polysulfone backbone with pendent lithium bis(trifluoromethanesulfonyl)imide groups.
10. A method according to claim 9 , wherein the coating further comprises a binder.
11. A method according to claim 9 , wherein the anode is a lithium-containing anode or a silicon-containing anode.