BATTERY PACKAGING MATERIALS, METHODS OF MANUFACTURE, AND USES THEREOF

1 . A thermal management battery packaging material comprising

a phase-change layer comprising a phase-change composition, wherein the phase-change composition comprises a combination of a phase-change material, and a polymer; and

a battery packaging layer disposed on a side of the phase-change layer.

2 . The thermal management battery packaging material of claim 1 , further comprising

a protective polymer layer disposed on a side of the phase-change layer opposite the battery packaging layer.

3 . The thermal management battery packaging material of claim 1 , wherein a thickness of the phase-change layer is 5 micrometers to 10 millimeters.

4 . The thermal management battery packaging material of claim 1 , wherein the polymer comprises a polyvinyl chloride, polyether sulfone, acrylonitrile-butadiene-styrene, styrene-acrylonitrile, polyvinylidene fluoride, silicone rubber, cyclic olefin polymer, fluoropolymer, polyacetal, poly(C 1-6 alkyl)acrylate, polyacrylamide, polyacrylonitrile, polyamide, polyamideimide, polyanhydride, polyarylene ether, polyarylene ether ketone, polyarylene ketone, polyarylene sulfide, polyarylene sulfone, polycarbonate, polyester, polyetherimide, polyimide, poly(C 1-6 alkyl)methacrylate, polymethacrylamide, polyolefin, polyoxymethylene, polysiloxane, polystyrene, polysulfide, polysulfonamide, polysulfonate, polythioester, polytriazine, polyurea, thermoplastic polyurethane, vinyl polymer, alkyd, bismaleimide polymer, bismaleimide triazine polymer, cyanate ester polymer, benzocyclobutene polymer, diallyl phthalate polymer, epoxy, hydroxymethylfuran polymer, melamine-formaldehyde polymer, phenolic polymer, benzoxazine polymer, polydiene, polyisocyanate, polyurea, thermoset polyurethane, silicone, triallyl cyanurate polymer, triallyl isocyanurate polymer, or a combination thereof.

5 . The thermal management battery packaging material of claim 1 , wherein the phase-change material comprises a C10-C35 alkane, C10-C35 fatty acid, C10-C55 fatty acid ester, a vegetable oil, or a combination thereof.

6 . The thermal management battery packaging material of claim 1 , wherein the phase-change material comprises an unencapsulated first phase-change material.

7 . The thermal management battery packaging material of claim 1 , wherein the phase-change material comprises an encapsulated first phase-change material.

8 . The thermal management battery packaging material of claim 7 , the phase-change material further comprising an unencapsulated second phase-change material, wherein the first and second phase-change materials can be the same or different, preferably wherein the phase-change material comprises at least 80% encapsulated first phase-change material.

9 . The thermal management battery packaging material of claim 1 , wherein the phase-change composition further comprises an additive composition, wherein the additive composition comprises a flame retardant, a thermal stabilizer, an antioxidant, a thermoconductive filler, a thermally insulating filler, a magnetic filler, a colorant, or a combination thereof.

10 . The thermal management battery packaging material of claim 1 , wherein the phase-change composition comprises

2 to 40 weight percent of the polymer;

40 to 97 weight percent of the phase-change material; and

when present, up to 60 weight percent, of an additive composition;

wherein each weight percent is based on the total weight of the phase-change composition and totals 100 weight percent.

11 . The thermal management battery packaging material of claim 10 , wherein the phase-change composition has a transition temperature of 5 to 70° C.

12 . The thermal management battery packaging material of claim 1 , wherein the phase-change composition has a heat of fusion, determined by differential scanning calorimetry according to ASTM D3418, at the transition temperature of at least 120 Joules/gram.

13 . The thermal management battery packaging material of claim 1 , wherein the battery packaging layer comprises polyvinyl chloride, polystyrene, polyether sulfone, acrylonitrile-butadiene-styrene, styrene-acrylonitrile, polyester, polyethylene naphthalate, polyethylene terephthalate, polyvinylidene fluoride, silicone rubber, polyamide, perfluoromethylvinylether, polyolefin, polypropylene, polyethylene, copolymers of polyethylene or polypropylene, fluorinated polyolefin, polytetrafluoroethylene, fluorinated ethylene-propylene, vinylidene fluoride, tetrafluoroethylene-vinylidene fluoride-hexafluoropropylene, or a combination thereof.

14 . The thermal management battery packaging material of claim 1 , wherein the battery packaging layer comprises a heat shrink polymer.

15 . The thermal management battery packaging material of claim 1 , wherein a solubility parameter of the polymer is within ±1 of the solubility parameter of the phase-change material.

16 . The thermal management battery packaging material of claim 1 , further comprising a heat-conductive material disposed on a surface of the phase-change layer.

17 . A method of manufacturing the thermal management battery packaging material of claim 1 , the method comprising contacting the phase-change layer and the battery packaging layer.

18 . The method of claim 17 , further comprising

combining the phase-change material and the polymer and optionally an additive to form a phase-change composition; and

forming the phase-change layer from the phase-change composition.

19 . The method of claim 17 , wherein the contacting comprises coating the phase-change layer onto the battery packaging layer, coating the battery packaging layer onto the phase-change layer, laminating the phase-change layer and the battery packaging layer, co-extruding the phase-change layer and the battery packaging layer, or adhering the phase-change layer and the battery packaging layer with an adhesive.

20 . The method of claim 17 , further comprising

contacting a surface of the phase-change layer opposite to the battery packaging layer with a heat-conductive material.

21 . An article comprising a battery and the thermal management battery packaging material of claim 1 .

22 . An article comprising a battery component and the thermal management battery packaging material of claim 1 .

23 . The article of claim 22 , wherein the battery component is a battery cell.