Semi-solid electrodes with a polymer additive

Patent metadata

Field	Value
Publication number	US-2019245242-A1
Application number	US-201816152728-A
Country	US
Kind code	A1
Filing date	Oct 5, 2018
Priority date	Jul 19, 2013
Publication date	Aug 8, 2019
Grant date	—

Abstract

Embodiments described herein relate generally to electrochemical cells having semi-solid electrodes that include a gel polymer additive such that the electrodes demonstrate longer cycle life while significantly retaining the electronic performance of the electrodes and the electrochemical cells formed therefrom. In some embodiments, a semi-solid electrode can include about 20% to about 75% by volume of an active material, about 0.5% to about 25% by volume of a conductive material, and about 20% to about 70% by volume of an electrolyte. The electrolyte further includes about 0.01% to about 1.5% by weight of a polymer additive. In some embodiments, the electrolyte can include about 0.1% to about 0.7% of the polymer additive.

First claim

1 .- 24 . (canceled)

25 . A semi-solid electrode, comprising:
about 20% to about 75% by volume of an active material; and about 20% to about 70% by volume of an electrolyte, the electrolyte including about 0.01% to 1.5% by weight of an additive formulated to modify the rheology of the semi-solid electrode, wherein a total additive content in the electrolyte is less than or equal to 1.5% by weight.

26 . The semi-solid electrode of claim 25 , wherein the electrolyte includes about 0.1% to about 1.25% by weight of the additive.

27 . The semi-solid electrode of claim 26 , wherein the electrolyte includes about 0.1% to about 1% by weight of the additive.

28 . The semi-solid electrode of claim 27 , wherein the electrolyte includes about 0.1% to about 0.7% by weight of the additive.

29 . The semi-solid electrode of claim 28 , wherein the electrolyte includes about 0.1% to about 0.5% by weight of the additive.

30 . The semi-solid electrode of claim 29 , wherein the electrolyte includes about 0.1% to about 0.3% by weight of the additive.

31 . The semi-solid electrode of claim 25 , wherein the additive is a gel-polymer additive.

32 . The semi-solid electrode of claim 31 , wherein the gel polymer additive includes at least one of a physically cross-linked gel polymer additive and a chemically cross-linked gel polymer additive.

33 . The semi-solid electrode of claim 31 , wherein the gel polymer additive includes at least one of an acrylate group and a methacrylate group.

34 . The semi-solid electrode of claim 25 , wherein the polymer additive is carboxy methyl cellulose.

35 . The semi-solid electrode of claim 25 , wherein the polymer additive includes at least one of a poly(ethyleneglycol dimethacrylate), poly(ethyleneglycol diacrylate), poly(propyleneglycol dimethacrylate), poly(propyleneglycol diacrylate), and poly(methyl methacrylate) (PMMA), polyethylene glycol dimethacrylate, poly(acrylonitrile) (PAN), polyurethane (PU), poly(vinylidene difluoride) (PVdF), poly(ethylene oxide) (PEO), poly(propylene oxide) poly(ethyleneglycol dimethylether), poly(ethyleneglycol diethylether), poly[bis(methoxy ethoxyethoxide)-phosphazene], poly(dimethylsiloxane) (PDMS), polyacene, polydisulfide, polystyrene, polystyrene sulfonate, polypyrrole, polyaniline, polythiophene, polythione, polyvinyl pyridine (PVP), polyvinyl chloride (PVC), polyaniline, poly(3,4-ethylenedioxythiophene) (PEDOT), polypyrrole, polythiophene, poly(p-phenylene), poly(triphenylene), polyazulene, polyfluorene, polynaphtalene, polyanthracene, polyfuran, polycarbazole, tetrathiafulvalene-substituted polystyrene, ferrocene-substituted polyethylene, carbazole-substituted polyethylene, polyoxyphena zine, poly(heteroacene), poly[(4-styrenesulfonyl)(trifluoromethanesulfonyl)imide-co-methoxy-polyethyleneglycolacrylate] (Li[PSTFSI-co-MPEGA]), sulfonated poly(phenylene oxide) (PPO), N,N-dimethylacryl amide (DMAAm), and lithium 2-acrylamido-2-methyl-1-propane sulfonate (LiAMPS), Poly(lithium 2-Acrylamido-2-Methylpropanesulfonic Acid-Co-Vinyl Triethoxysilane). polyethyleneoxide(PEO)/poly(lithium sorbate), PEO/poly(lithium muconate), PEO/[poly(lithium sorbat)+BF 3 ], PEO copolymer, and PEO terpolymer poly.

36 . A semi-solid electrode, comprising:
about 10% to about 75% by volume of an active material; 0% to about 20% by volume of a conductive material; and about 20% to about 70% by volume of an electrolyte, the electrolyte including about 0.01% to 1.5% by weight of an additive formulated to modify the rheology of the semi-solid electrode, wherein a total additive content in the electrolyte is less than or equal to 1.5% by weight.

37 . The semi-solid electrode of claim 36 , wherein the semi-solid electrode further includes about 1% to about 30% by volume of a high capacity material.

38 . The semi-solid electrode of claim 36 , wherein the electrolyte includes about 0.1% to about 1% by weight of the additive.

39 . The semi-solid electrode of claim 36 , wherein the additive includes at least one of a poly(ethyleneglycol dimethacrylate), poly(ethyleneglycol diacrylate), poly(propyleneglycol dimethacrylate), poly(propyleneglycol diacrylate), and poly(methyl methacrylate) (PMMA), polyethylene glycol dimethacrylate, poly(acrylonitrile) (PAN), polyurethane (PU), poly(vinylidene difluoride) (PVdF), poly(ethylene oxide) (PEO), poly(propylene oxide) poly(ethyleneglycol dimethylether), poly(ethyleneglycol diethylether), poly[bis(methoxy ethoxyethoxide)-phosphazene], poly(dimethylsiloxane) (PDMS), polyacene, polydisulfide, polystyrene, polystyrene sulfonate, polypyrrole, polyaniline, polythiophene, polythione, polyvinyl pyridine (PVP), polyvinyl chloride (PVC), polyaniline, poly(3,4-ethylenedioxythiophene) (PEDOT), polypyrrole, polythiophene, poly(p-phenylene), poly(triphenylene), polyazulene, polyfluorene, polynaphtalene, polyanthracene, polyfuran, polycarbazole, tetrathiafulvalene-substituted polystyrene, ferrocene-substituted polyethylene, carbazole-substituted polyethylene, polyoxyphena zine, poly(heteroacene), poly[(4-styrenesulfonyl)(trifluoromethanesulfonyl)imide-co-methoxy-polyethyleneglycolacrylate] (Li[PSTFSI-co-MPEGA]), sulfonated poly(phenylene oxide) (PPO), N,N-dimethylacryl amide (DMAAm), and lithium 2-acrylamido-2-methyl-1-propane sulfonate (LiAMPS), Poly(lithium 2-Acrylamido-2-Methylpropanesulfonic Acid-Co-Vinyl Triethoxysilane). polyethyleneoxide(PEO)/poly(lithium sorbate), PEO/poly(lithium muconate), PEO/[poly(lithium sorbat)+BF 3 ], PEO copolymer, and PEO terpolymer poly.

40 . A semi-solid electrode, comprising:
an active material; a conductive material; and about 20% to about 70% by volume of an electrolyte, the electrolyte including about 0.01% to 1.5% by weight of an additive formulated to modify the rheology of the semi-solid electrode, wherein a total additive content in the electrolyte is less than or equal to 1.5% by weight.

41 . The semi-solid electrode of claim 40 , wherein the semi-solid electrode further includes about 1% to about 30% by volume of a high capacity material.

42 . The semi-solid electrode of claim 40 , wherein the electrolyte includes about 0.1% to about 1% by weight of the additive.

43 . The semi-solid electrode of claim 40 , wherein the additive includes at least one of a poly(ethyleneglycol dimethacrylate), poly(ethyleneglycol diacrylate), poly(propyleneglycol dimethacrylate), poly(propyleneglycol diacrylate), and poly(methyl methacrylate) (PMMA), polyethylene glycol dimethacrylate, poly(acrylonitrile) (PAN), polyurethane (PU), poly(vinylidene difluoride) (PVdF), poly(ethylene oxide) (PEO), poly(propylene oxide) poly(ethyleneglycol dimethylether), poly(ethyleneglycol diethylether), poly[bis(methoxy ethoxyethoxide)-phosphazene], poly(dimethylsiloxane) (PDMS), polyacene, polydisulfide, polystyrene, polystyrene sulfonate, polypyrrole, polyaniline, polythiophene, polythione, polyvinyl pyridine (PVP), polyvinyl chloride (PVC), polyaniline, poly(3,4-ethylenedioxythiophene) (PEDOT), polypyrrole, polythiophene, poly(p-phenylene), poly(triphenylene), polyazulene, polyfluorene, polynaphtalene, polyanthracene, polyfuran, polycarbazole, tetrathiafulvalene-substituted polystyrene, ferrocene-substituted polyethylene, carbazole-substituted polyethylene, polyoxyphena zine, poly(heteroacene), poly[(4-styrenesulfonyl)(trifluoromethanesulfonyl)imide-co-methoxy-polyethyleneglycolacrylate] (Li[PSTFSI-co-MPEGA]), sulfonated poly(phenylene oxide) (PPO), N,N-dimethylacryl amide (DMAAm), and lithium 2-acrylamido-2-methyl-1-propane sulfonate (LiAMPS), Poly(lit

Assignees

• 24M Technologies Inc

Inventors

• Tan Taison
• Ota Naoki
• Disko Jeffry

Classifications

• H01M2300/0085

  Immobilising or gelification of electrolyte · CPC title

• H01M4/64

  Carriers or collectors · CPC title

• H01M4/13

  Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof · CPC title

• H01M4/62

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

• Y10T29/49108

  Electric battery cell making · CPC title