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US 12,586,784 B2Granted
Silicon anodes with water-soluble maleic anhydride-, and/or maleic acid-containing polymers/copolymers, derivatives, and/or combinations (with or without additives) as binders
AssigneeEnevate Corporation
InventorsLiwen Ji, Younes Ansari, Sanjaya D. Perera, Benjamin Park
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Abstract
Systems and methods for batteries comprising a cathode, an electrolyte, and an anode, wherein the anode is a Si-dominant anode that utilizes water-soluble maleic anhydride- and/or maleic acid-containing polymers/co-polymers, derivatives, and/or combinations (with or without additives) as binders.
Claims13
A battery electrode, the electrode comprising an electrode coating layer comprising from about 1 wt % to 95 wt % Si;
- wherein said electrode coating layer further comprises a water-soluble maleic anhydride- or maleic acid-containing polymer binder;
- and wherein said polymer binder comprises Poly(methyl vinyl ether-alt-maleic anhydride);
- Poly(methyl vinyl ether-alt-maleic acid);
- Poly(styrene-alt-maleic acid) sodium salts;
- Poly(styrene-co-maleic acid), partial isobutyl esters;
- Poly(styrene-co-maleic acid), partial isobutyl/methyl mixed esters;
- Poly(styrene-alt-maleic anhydride), partial methyl esters;
- Poly(isobutylene-alt-maleic anhydride);
- Poly(maleic anhydride-alt-1-octadecene);
- Poly(ethylene-alt-maleic anhydride);
- Polypropylene-graft-maleic anhydride;
- Polyisoprene-graft-maleic anhydride;
- or Polystyrene-block-poly(ethylene-ran-butylene)-block-polystyrene-graft-maleic anhydride;
- and
- wherein said polymer binder further comprises a conductive additive, wherein said conductive additive comprises Super P carbon black, graphite, graphene, carbon nanofibers, carbon fibers, carbon nanotubes, porous carbons and/or other types of zero-, one-, two-, or three-dimensional carbon materials.
12 more elements
A method of forming a battery electrode, the method comprising:
- creating an electrode coating layer from an electrode slurry comprising an aqueous solution of a maleic anhydride- or maleic acid-containing polymer binder and about 1 wt % to 95 wt % Si powder, with optional additives;
- fabricating a battery electrode by coating the slurry on a current collector;
- and
- pyrolyzing said electrode coating layer;
- wherein said polymer binder comprises Poly(methyl vinyl ether-alt-maleic anhydride);
- Poly(methyl vinyl ether-alt-maleic acid);
- Poly(styrene-alt-maleic acid) sodium salts;
- Poly(styrene-co-maleic acid), partial isobutyl esters;
- Poly(styrene-co-maleic acid), partial isobutyl/methyl mixed esters;
- Poly(styrene-alt-maleic anhydride), partial methyl esters;
- Poly(isobutylene-alt-maleic anhydride);
- Poly(maleic anhydride-alt-1-octadecene);
- Poly(ethylene-alt-maleic anhydride);
- Polypropylene-graft-maleic anhydride;
- Polyisoprene-graft-maleic anhydride;
- or Polystyrene-block-poly(ethylene-ran-butylene)-block-polystyrene-graft-maleic anhydride;
- and
- wherein said polymer binder further comprises a conductive additive, wherein said conductive additive comprises Super P carbon black, graphite, graphene, carbon nanofibers, carbon fibers, carbon nanotubes, porous carbons and/or other types of zero-, one-, two-, or three-dimensional carbon materials.
15 more elements
Dependencies are inferred from the claim text.