Electrodes and rechargeable batteries
View Patent ↗The present invention provides cathodes, methods of making cathodes, and electrochemical cells (e.g., batteries) that employ these cathodes having improved properties over traditional cathodes, methods, or electrochemical cells.
1. A cathode for use in a rechargeable battery comprising:
a cathode active material comprising:
a stabilizing agent comprising a powder having a mean particle diameter of from about 5 nm to about 210 nm; and
silver,
wherein the powder comprises SiO 2 particles, ZrO 2 particles, and ZnO particles, and the silver comprises Ag, AgO, Ag 2 O, Ag 2 O 3 , AgOH, Ag(OH) 2 , Ag(OH) 3 , AgOOH, AgONa, AgOK, AgOLi, AgORb, AgOONa, AgOOk, AgOOLi, AgOORb, AgCuO 2 , AgFeO 2 , AgMnO 2 , Ag 2 CuMnO 4 , any hydrate thereof, or any combination thereof.
2. The cathode of claim 1 , wherein the cathode active material comprises from about 0.005 wt % to about 0.5 wt % of the stabilizing agent.
3. The cathode of claim 1 , wherein the ZnO particles are doped with a dopant comprising Al 2 O 3 , iron oxide, indium oxide, or any combination thereof.
4. The cathode of claim 3 , wherein the ZnO particles are doped with a dopant comprising Al 2 O 3 .
5. The cathode of claim 4 , wherein the ZnO particles comprise from about 1 wt % to about 10 wt % of Al 2 O 3 by weight of the ZnO particles.
6. The cathode of claim 1 , wherein the cathode further comprises a binder.
7. A rechargeable battery comprising
a cathode comprising
a cathode active material comprising silver and a stabilizing agent;
wherein the stabilizing agent comprises a powder having a mean particle diameter of from about 5 nm to about 210 nm; the powder comprises SiO 3 particles, ZrO 2 particles, and ZnO particles; and the silver comprises Ag, AgO, Ag 2 O, Ag 2 O 3 , AgOH, Ag(OH) 2 , Ag(OH) 3 , AgOOH, AgONa, AgOK, AgOLi, AgORb, AgOONa, AgOOk, AgOOLi, AgOORb, AgCuO 2 , AgFeO 2 , AgMnO 2 , Ag 2 CuMnO 4 , any hydrate thereof, or any combination thereof.
8. The rechargeable battery of claim 7 , wherein the cathode active material comprises from about 0.005 wt % to about 0.5 wt % of the stabilizing agent.
9. The rechargeable battery of claim 7 , wherein the ZnO particles are doped with a dopant comprising Al 2 O 3 , iron oxide, indium oxide, or any combination thereof.
10. The rechargeable battery of claim 9 , wherein the ZnO particles are doped with a dopant comprising Al 2 O 3 .
11. A cathode for use in a rechargeable battery comprising:
a cathode active material comprising:
a stabilizing agent comprising SiO 2 particles, ZrO 2 particles, and ZnO particles; and
silver,
wherein the ZnO particles are doped with Al 2 O 3 and the silver comprises AgO that is coated with a coating agent comprising Pb, and the AgO is doped with Ga.
12. A rechargeable battery comprising a cathode according to claim 11 .