Self healing lithium-ion battery

Patent metadata

Field	Value
Publication number	US-12315871-B2
Application number	US-202117447558-A
Country	US
Kind code	B2
Filing date	Sep 13, 2021
Priority date	Sep 13, 2021
Publication date	May 27, 2025
Grant date	May 27, 2025

Abstract

An ion-lithium battery that may include an anode, a cathode, and at least one out of an anode related self-healing combination and a solid electrolyte interphase (SEI) self-healing combination; wherein the SEI related self-healing combination comprises a SEI self-healing additive, a SEI forming moiety and a first linker for linking the SEI self-healing additive to the SEI forming moiety; and wherein the anode related self-healing combination comprises an anode self-healing additive, an anode connection functional group, and a second linker for linking the anode self-healing additive to the anode connection functional group.

First claim

We claim:

1. A lithium-ion battery with self-healing functionality, comprising:
an anode,
a cathode,
at least one out of an anode related self-healing combination and a solid electrolyte interface (SEI) self-healing combination; wherein the SEI related self-healing combination comprises a SEI self-healing additive, a SEI forming moiety and a first linker for linking the SEI self-healing additive to the SEI forming moiety; and
an electrolyte, wherein the electrolyte comprises the at least one out of the anode related self-healing combination and the SEI self-healing combination;
wherein the anode related self-healing combination comprises an anode self-healing additive, an anode connection functional group, and a second linker for linking the anode self-healing additive to the anode connection functional group.

2. The lithium-ion battery according to claim 1 wherein the lithium-ion battery is manufactured by a manufacturing process that comprises adding the anode related self-healing combination during a slurry preparation process.

3. The lithium-ion battery according to claim 1 wherein the lithium-ion battery is manufactured by a manufacturing process that comprises adding to an electrolyte of the lithium-ion battery at least one out of the anode related self-healing combination and the SEI self-healing combination.

4. The lithium-ion battery according to claim 1 comprising the anode related self-healing combination and the SEI self-healing combination.

5. The lithium-ion battery according to claim 4 comprising the anode related self-healing combination and the SEI self-healing combination, wherein the SEI self-healing additive also acts as the anode self-healing additive.

6. The lithium-ion battery according to claim 1 wherein the lithium-ion battery is manufactured by a manufacturing process that comprises linking the anode related self-healing combination to a part of the anode that is exposed to the electrolyte and preventing from linking the anode related self-healing combination to another part of the anode that is not exposed to the electrolyte.

7. The lithium-ion battery according to claim 1 wherein the SEI self-healing additive differs from the anode self-healing additive.

8. The lithium-ion battery according to claim 1 wherein the SEI self-healing additive equals the anode self-healing additive.

9. The lithium-ion battery according to claim 1 wherein the anode related self-healing combination is described by the formula:

wherein R 4 is an anode connection functional group, wherein R 2 and R 3 are 1-4 carbon alkyl chains, X is selected from NH, O, S and CH2, and Y is a linking moiety.

10. The lithium-ion battery according to claim 9 wherein the anode connection functional group is selected out of isocyanates, isothiocyanates, carboxylic acids, alcohols, pyridines, methylpyridines, methylenepyridines, imidazoles, alkyl imidazoles, alkyl tertiary amines.

11. The lithium-ion battery according to claim 10 wherein the carboxylic esters are COORa, with Ra=linear or branched C1-C12.

12. The lithium-ion battery according to claim 10 wherein the linking moiety is selected out of saturated or unsaturated, branched, cyclic or linear alkyl chains, siloxane chains, ester chains, ether chains and any chain of atoms used in traditional polymer chemistry, whether or not substituted with functional groups such as esters, ethers, ureas or urethanes.

13. The lithium-ion battery according to claim 10 wherein the linking moiety is selected out of C1-C32 linear chain or branched alkylene, arylene, alkarylene or arylalkylene group, wherein the alkylene, arylene, alkarylene or arylalkylene group.

14. The lithium-ion battery according to claim 10 wherein the linking moiety is selected out of methylene, ethylene, propylene, tetramethylene, pentamethylene, hexamethylene heptamethylene, octamethylene, nonamethylene, isophorone; phenylene, tolylene, methylphenylene, xylylene, 4,4-biphenylenemethylene, 1,6-bis(ethylene)cyclohexane, 1,6-bis(methylene)cyclohexane, 1,6-bis(methylene)benzene.

15. The lithium-ion battery according to claim 10 wherein the linking moiety is derived from a compound that must have at least two functional groups, e.g. hydroxy, carboxylate, carboxylic ester, acyl halide, isocyanate, thioisocyanate, primary amine, secondary amine, or halogen functions.

16. The lithium-ion battery according to claim 9 wherein the anode connection functional group is selected out of silanes having a functional group selected from hydroxy, carboxylic acid, carboxylic ester, isocyanate, thioisocyanate, primary amine, secondary amine or halogen groups.

17. The lithium-ion battery according to claim 10 wherein the SEI related self-healing combination is described by the formula:

wherein R 1 is a SEI-forming group, wherein R 2 and R 3 are 1-4 carbon alkyl chains, X is selected from NH, O, S and CH2, and Y is a linking moiety.

18. The lithium-ion battery according to claim 17 wherein the SEI-forming/polymerizable group is selected out of monomeric units having at least one ethylenically unsaturated group.

19. The lithium-ion battery according to claim 17 wherein the SEI-forming/polymerizable group is selected out of carbon-carbon double bonds.

20. The lithium-ion battery according to claim 17 wherein the SEI-forming/polymerizable group is selected out allyl alcohols, homoallyl alcohols, geraniols, pinenes, limonenes, vinylene carbonates, vinyl ethylene carbonates, propene sultones, sulfolenes, acrylates, methacrylates, acrylamides, methacrylamides, styrenes, stilbenes, vinyl-pyridines.

21. The lithium-ion battery according to claim 17 wherein the SEI-forming/polymerizable group is selected out of vinyl monomers having a functional group selected from hydroxy, carboxylic acid, carboxylic ester, isocyanate, thioisocyanate, primary amine, secondary amine or halogen groups.

22. The lithium-ion battery according to claim 17 wherein the linking moiety is selected out of saturated or unsaturated, branched, cyclic or linear alkyl chains, siloxane chains, ester chains, ether chains and any chain of atoms used in traditional polymer chemistry, whether or not substituted with functional groups such as esters, ethers, ureas or urethanes.

23. The lithium-ion battery according to claim 17 wherein the linking moiety is selected out of C1-C32 linear chain or branched alkylene, arylene, alkarylene or arylalkylene group, wherein the alkylene, arylene, alkarylene or arylalkylene group.

24. The lithium-ion battery according to claim 17 wherein the linking moiety is selected out of methylene, ethylene, propylene, tetramethylene, pentamethylene, hexamethylene heptamethylene, octamethylene, nonamethylene, isophorone; phenylene, tolylene, methylphenylene, xylylene, 4,4-biphenylenemethylene, 1,6-bis(ethylene)cyclohexane, 1,6-bis(methylene)cyclohexane, 1,6-bis(methylene)benzene.

25. The lithium-ion battery according to claim 24 wherein the alkylene, arylene, alkarylene or arylalkylene groups are interrupted by heteroatoms, in particular heteroatoms selected from the group of oxygen, nitrogen, and sulphur.

26. The lithium-ion battery according to claim 17 wherein the linking moiety is derived from a compound

Assignees

• Storedot Ltd

Inventors

• Herzog Ido
• Herszman John Dominic
• Sella Eran

Classifications

• C07D239/22

  with hetero atoms directly attached to ring carbon atoms · CPC title

• H01M2004/027

  Negative electrodes · CPC title

• H01M4/366

  as layered products · CPC title

• H01M10/052

  Li-accumulators · CPC title

• H01M4/62

  Selection of inactive substances as ingredients for active masses, e.g. binders, fillers · CPC title