Rechargeable battery with anion conducting polymer
Energy storage devices, battery cells, and batteries of the present technology may include a first current collector and a second current collector. The batteries may include an anode material coupled with the first current collector. The batteries may include a cathode material coupled with the second current collector. The batteries may also include a polymeric material coupled between the cathode material and the anode material. The polymeric material may be characterized by a cationic backbone. The polymeric material may be configured to selectively provide anionic transport across the polymeric material while limiting cationic transport across the polymeric material.
1. A battery cell comprising:
a cathode characterized by a matrix of first particles of cathode active material;
an anode characterized by a matrix of second particles of anode active material; and
a hydroxide-conducting polymeric material disposed along an exterior surface of the cathode, wherein the hydroxide-conducting polymeric material is characterized by a cationic backbone, wherein the hydroxide-conducting polymeric material is configured to selectively provide hydroxide ion transport across the hydroxide-conducting polymeric material while limiting cationic transport across the hydroxide-conducting polymeric material, wherein the hydroxide-conducting polymeric material is further incorporated within the cathode as a cathode binder and to encapsulate individual first particles of the matrix in the cathode, wherein the hydroxide-conducting polymeric material is further incorporated within the anode as an anode binder and to encapsulate individual second particles of the matrix in the anode,
wherein the matrix of first particles and the hydroxide-conducting polymeric material incorporated within the cathode together form a composite cathode, wherein the hydroxide-conducting polymeric material comprises less than 20% of a total volume of the composite cathode, wherein the matrix of second particles and the hydroxide-conducting polymeric material incorporated within the anode together form a composite anode, and wherein the hydroxide-conducting polymeric material comprises less than 20% of a total volume of the composite anode.
2. The battery cell of claim 1 , wherein the hydroxide-conducting polymeric material seals the exterior surface of the matrix of first particles.
3. The battery cell of claim 2 , further comprising the hydroxide-conducting polymeric material disposed along an exterior surface of the anode and sealing the exterior surface of the matrix of second particles.
4. The battery cell of claim 3 , wherein the hydroxide-conducting polymeric material is configured to operate as a separator for the battery cell.
5. The battery cell of claim 1 , wherein an amount of hydroxide-conducting polymeric material encapsulating a first particle is less than about 10% of a volume of the first particle.
6. The battery cell of claim 1 , wherein the hydroxide-conducting polymeric material is characterized by a conductivity of hydroxide ions of at least about 1 mS/cm.
7. The battery cell of claim 1 , wherein the hydroxide-conducting polymeric material is characterized by a thickness less than or about 0.5 mm.
8. The battery cell of claim 1 , wherein the hydroxide-conducting polymeric material is characterized with terminal groups or moieties including quaternary ammonium ions with associated hydroxide ions.
9. The battery cell of claim 1 , further comprising a separator between the anode and the cathode, wherein the separator has a thickness less than or about 0.25 mm.
10. The battery cell of claim 1 , wherein the hydroxide-conducting polymeric material comprises a functionalized polyvinyl benzyl chloride.
11. The battery cell of claim 1 , further comprising a liquid electrolyte between the anode and the cathode.
12. The battery cell of claim 1 , wherein the hydroxide-conducting polymeric material comprises a coating that at least partially encapsulates the cathode.
13. The battery cell of claim 1 , wherein the hydroxide-conducting polymeric material comprises a coating that at least partially encapsulates the anode.
14. The battery cell of claim 1 , wherein the hydroxide-conducting polymeric material comprises a phosphonium-functionalized polymer.
15. The battery cell of claim 1 , wherein the hydroxide-conducting polymeric material comprises a sulfonium-functionalized polymer.