Energy storage device
First Claim
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1. An energy storage device, comprising:
- an electrically conductive first electrode;
an electrically conductive second electrode;
a sterically constrained dielectric film disposed between the electrically conductive first and second electrodes, the sterically constrained dielectric film comprising a plurality of polymeric molecules having one or more polar functional groups, ionizable functional groups, or a combination thereof, the energy storage device having an energy storage capacity, in the absence of the energy storage device having been charged and/or discharged, of at least 1 Wh/kg based solely on the weight of the sterically constrained dielectric film disposed between the electrically conductive first and second electrodes; and
a first insulative layer disposed between the electrically conductive first electrode and the dielectric film and a second insulative layer disposed between the electrically conductive second electrode and the sterically constrained dielectric film, wherein each of the first insulative layer and the second insulative layer consists of a polymerized p-xylylene insulative layer or a copolymer insulative layer prepared from p-xylene and one or more co-monomers selected from acrylates, methacrylates, a-pinene, R-(−
)carvone, linalool, cyclohexene, dipentene, a-terpinene, R-(+)-limonene, or any combination thereof,wherein the electrically conductive first electrode and the first insulative layer collectively form a composite first electrode,the electrically conductive second electrode and the second insulative layer collectively form a composite second electrode, andat least 1% of the plurality of polymeric molecules are bound to the first insulative layer of the composite first electrode, thereby sterically constraining the dielectric film.
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Abstract
Embodiments of a high-permittivity, low-leakage energy storage device, such as a capacitor, and methods of making the energy storage device are disclosed. The disclosed device includes electrically conductive first and second electrodes, and a sterically constrained dielectric film disposed between the first and second electrodes. The sterically constrained dielectric film comprises a plurality of polymeric molecules, and at least some of the polymeric molecules are bound to the first electrode. The disclosed device may include an insulative layer between the first electrode and the dielectric film and/or between the second electrode and the dielectric film.
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20 Claims
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1. An energy storage device, comprising:
- an electrically conductive first electrode;
an electrically conductive second electrode;a sterically constrained dielectric film disposed between the electrically conductive first and second electrodes, the sterically constrained dielectric film comprising a plurality of polymeric molecules having one or more polar functional groups, ionizable functional groups, or a combination thereof, the energy storage device having an energy storage capacity, in the absence of the energy storage device having been charged and/or discharged, of at least 1 Wh/kg based solely on the weight of the sterically constrained dielectric film disposed between the electrically conductive first and second electrodes; and a first insulative layer disposed between the electrically conductive first electrode and the dielectric film and a second insulative layer disposed between the electrically conductive second electrode and the sterically constrained dielectric film, wherein each of the first insulative layer and the second insulative layer consists of a polymerized p-xylylene insulative layer or a copolymer insulative layer prepared from p-xylene and one or more co-monomers selected from acrylates, methacrylates, a-pinene, R-(−
)carvone, linalool, cyclohexene, dipentene, a-terpinene, R-(+)-limonene, or any combination thereof,wherein the electrically conductive first electrode and the first insulative layer collectively form a composite first electrode, the electrically conductive second electrode and the second insulative layer collectively form a composite second electrode, and at least 1% of the plurality of polymeric molecules are bound to the first insulative layer of the composite first electrode, thereby sterically constraining the dielectric film. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
- an electrically conductive first electrode;
Specification