Battery electrode composition comprising biomass-derived carbon

Patent metadata

Field	Value
Publication number	US-12040488-B2
Application number	US-202318314703-A
Country	US
Kind code	B2
Filing date	May 9, 2023
Priority date	Sep 14, 2018
Publication date	Jul 16, 2024
Grant date	Jul 16, 2024

Abstract

An embodiment is directed to an electrode composition for use in an energy storage device cell. The electrode comprises composite particles, each comprising carbon that is biomass-derived and active material. The active material exhibits partial vapor pressure below around 10−13 torr at around 400 K, and an areal capacity loading of the electrode composition ranges from around 2 mAh/cm2 to around 16 mAh/cm2.

First claim

The invention claimed is:

1. An electrode composition, comprising:
composite particles, each comprising:
carbon that is biomass-derived and an active material,
wherein:
the active material exhibits partial vapor pressure below 10 −13 torr at 400 K;
an areal capacity loading of the electrode composition ranges from 2 mAh/cm 2 to 16 mAh/cm 2 ; and
the composite particles exhibit an average Brunauer-Emmett-Teller (BET) specific surface area (SSA) in a range from 0.5 m 2 /g to 1000 m 2 /g.

2. The electrode composition of claim 1 , wherein the BET SSA of the composite particles is in a range from 0.5 m 2 /g to 100 m 2 /g.

3. The electrode composition of claim 1 , wherein the active material comprises silicon (Si).

4. The electrode composition of claim 1 , wherein a weight ratio of the active material to the biomass-derived carbon in the composite particles ranges from 1:3 to 7:1.

5. The electrode composition of claim 1 , wherein an average size of the composite particles ranges from 600 nm to 20 microns.

6. The electrode composition of claim 1 , wherein the active material is present as active material particles characterized by an average size in a range of 2 nm to 30 nm.

7. The electrode composition of claim 1 , wherein the biomass-derived carbon is derived from one or more of (i) nut shells, (ii) pits, (iii) wood, (iv) bamboo, (v) grass, straw or dry leaves, (vi) corn grain, (vii) plane tree fluff, (viii) natural carbohydrates, (ix) or any combination thereof.

8. The electrode composition of claim 1 , wherein the biomass-derived carbon is porous.

9. The electrode composition of claim 8 , wherein the biomass-derived carbon exhibits a BET SSA in a range from 400 m 2 /g to 5,000 m 2 /g and a pore volume in a range from 0.4 cm 3 /g to 6 cm 3 /g.

10. The electrode composition of claim 9 , wherein the BET SSA of the biomass-derived carbon is in a range from 800 m 2 /g to 3000 m 2 /g.

11. The electrode composition of claim 9 , wherein the pore volume is in a range from 0.75 cm 3 /g to 2.5 cm 3 /g.

12. The electrode composition of claim 8 , wherein at least one pore in the biomass-derived carbon is produced by physical activation, chemical activation, or a combination thereof.

13. The electrode composition of claim 8 , wherein 50 to 100 wt. % of the active material in the composite particles is confined within one or more pores defined in the biomass-derived carbon.

14. The electrode composition of claim 13 , wherein 75 to 100 wt. % of the active material in the composite particles is confined within the one or more pores defined in the biomass-derived carbon.

15. The electrode composition of claim 8 , wherein a volume fraction in a range of 30 vol. % to 100 vol. % of pores of the biomass-derived carbon exhibits characteristic dimensions in a range from 0.5 nm to 10 nm.

16. The electrode composition of claim 1 , wherein the biomass-derived carbon comprises an ash content of less than 1 wt. %.

17. The electrode composition of claim 1 , wherein the composite particles additionally comprise carbon that is derived from one or more synthetic polymers or one or more hydrocarbon gases.

18. The electrode composition of claim 1 , wherein the active material is at least partially coated with a carbon-comprising protective surface layer.

19. The electrode composition of claim 18 , wherein the carbon-comprising protective surface layer is deposited from a hydrocarbon gas selected from CH 4 , C 2 H 2 , C 2 H 4 , C 2 H 6 , C 3 H 6 , C 3 H 8 , and C 3 H 4 .

20. The electrode composition of claim 1 , wherein the composite particles further comprise a metal or semimetal.

21. The electrode composition of claim 20 , wherein the composite particles comprise a metal oxide or semimetal oxide, a metal fluoride or semimetal fluoride, or a combination thereof.

22. The electrode composition of claim 1 , wherein the composite particles are porous with a total pore volume that ranges from 2 vol. % to 75 vol. %.

23. The electrode composition of claim 22 , wherein from 50 vol. % to 100 vol. % of pores within the composite particle are configured to remain sealed and inaccessible to electrolyte while the electrode composition is made part of the energy storage device cell.

24. An energy storage device cell, comprising:
the electrode composition of claim 1 ; and
a solid electrolyte.

25. An energy storage device cell, comprising:
the electrode composition of claim 1 ,
wherein the energy storage device cell is a Na-ion battery, a Na metal battery, a Li-ion battery or a Li metal battery.

26. The electrode composition of claim 1 , wherein one or more components of the electrode composition are made part of the electrode composition via vapor deposition.

27. The electrode composition of claim 1 , wherein one or more components of the electrode composition are hydrothermally treated.

28. A method of manufacturing an electrode that comprises the electrode composition of claim 1 , comprising:
assembling the electrode from the electrode composition while in a discharged state.

Assignees

• Sila Nanotechnologies Inc

Inventors

• Yushin Gleb
• Kajdos Adam

Classifications

• Y02E60/10

  Energy storage using batteries · CPC title

• H01M10/0562

  Solid materials · CPC title

• H01G11/56

  Solid electrolytes, e.g. gels; Additives therein · CPC title

• H01G11/06

  with one of the electrodes allowing ions to be reversibly doped thereinto, e.g. lithium ion capacitors [LIC] · CPC title

• H01M10/054

  Accumulators with insertion or intercalation of metals other than lithium, e.g. with magnesium or aluminium · CPC title