Traitement en cours

Veuillez attendre...

Paramétrages

Paramétrages

Aller à Demande

1. WO2020115743 - PRÉVENTION DE LA CROISSANCE DE DENDRITES DANS UNE BATTERIE RECHARGEABLE

Note: Texte fondé sur des processus automatiques de reconnaissance optique de caractères. Seule la version PDF a une valeur juridique

[ EN ]

CLAIMS

What is claimed is:

1. A rechargeable battery comprising a zinc-based anode, a cathode, an alkaline electrolyte and a separator separating the zinc-based anode from the cathode,

wherein the separator comprises an ion-selective membrane configured to be permeable to charge transfer cations of the alkaline electrolyte and impermeable to hydrated zincate anions.

2. The rechargeable battery of claim 1, wherein the separator is further configured to limit zinc dendrite growth to a compartment between the zinc-based anode and the separator by preventing zincate anions from diffusing outside of said compartment.

3. The rechargeable battery of claim 1 or 2, wherein the ion-selective membrane is a cellophane membrane.

4. The rechargeable battery of claim 1 or 2, wherein the ion-selective membrane is a thin-film composite membrane.

5. The rechargeable battery of claim 1 or 2, wherein the ion-selective membrane is an asymmetric reverse osmosis membrane.

6. The rechargeable battery of any one of claims 1-5, wherein the separator is mechanically reinforced.

7. The rechargeable battery of claim 6, wherein the separator is reinforced with fibrous polymer.

8. The rechargeable battery of claim 6, wherein the separator comprises a layer of fibrous polymer.

9. The rechargeable battery of claim 6, wherein the separator comprises a mechanical support.

10. The rechargeable battery of any one of claims 1-9, wherein the separator is configured to support at least one internal compartment with electrolyte that is devoid of zincate ions.

11. A method for limiting zinc dendrite growth in a rechargeable battery comprising, providing a compartment in said rechargeable battery between a zinc-based anode and an ion selective separator, preventing zincate anions from diffusing outside of said compartment.

12. The method of claim 11, further comprising:

arranging an ion-selective membrane to be permeable to charge transfer cations of an alkaline electrolyte of the rechargeable battery, and impermeable to hydrated zincate anions, and configuring, from the ion-selective membrane, the separator which separates, in the alkaline electrolyte, the zinc -based anode from a cathode of the rechargeable battery.

13. The method of claim 12, wherein the arranging of the membrane comprises using as membrane component(s) at least one of: a cellophane membrane, a thin-film composite membrane and an asymmetric reverse osmosis membrane.

14. The method of any one of claims 11-13, further comprising mechanically reinforcing the separator using at least one of: fibrous polymer, a layer of fibrous polymer and a mechanical support.

15. The method of any one of claims 11-14, further comprising configuring the separator to support at least one internal compartment with electrolyte that is devoid of zincate ions.

16. A rechargeable battery comprising at least one metal- based anode, at least one cathode, alkaline electrolyte and at least one separator separating the at least one anode from the at least one cathode, wherein the separator comprises an ion-selective membrane configured to be permeable to charge transfer cations of the alkaline electrolyte and impermeable to metal ions.

17. The rechargeable battery of claim 16, wherein the at least one separator is further configured to limit deposition of the metal ions to a compartment between the at least one anode and the at least one separator by preventing the metal ions from diffusing outside of said compartment.

18. The rechargeable battery of claim 16 or 17, wherein the ion-selective membrane comprises at least one of: a cellophane membrane, a thin-film composite membrane and an asymmetric reverse osmosis membrane.

19. The rechargeable battery of any one of claims 16-18, wherein the separator is mechanically reinforced with at least one of: fibrous polymer, a layer of fibrous polymer and a mechanical support.