NOVELTY - Making an energy storage device comprises: positioning an anodic current collector into a processing region; depositing one or more three-dimensional electrodes separated by a finite distance on a surface of the anodic current collector; depositing a conformal polymeric layer over anodic current collector and the three-dimensional electrodes using initiated chemical vapor deposition techniques; depositing a conformal layer of cathodic material; and depositing a cathodic current collector (513) over the layer of cathodic material.    USE - The method is useful for producing an energy storage device (claimed), which is useful in electric batteries, supercapacitors, and electrochemical capacitors, where the batteries are useful in portable electronics, medical, transportation, grid-connected large energy storage, renewable energy storage, and uninterruptible power supply applications.    ADVANTAGE - The method is cost effective. The energy storage device is small, lighter, faster charging, and higher capacity device. The energy storage device has reduced internal resistance.    DETAILED DESCRIPTION - Producing an energy storage device comprises: positioning an anodic current collector into a processing region; depositing one or more three-dimensional electrodes separated by a finite distance on a surface of the anodic current collector such that portions of the surface of the anodic current collector remain exposed; depositing a conformal polymeric layer over the anodic current collector and the three-dimensional electrodes using initiated chemical vapor deposition (iCVD) techniques comprising flowing a gaseous monomer into the processing region, flowing a gaseous initiator into the processing region through a heated filament to form a reactive gas mixture of the gaseous monomer and the gaseous initiator, where the heated filament is heated to a temperature of 300-600 degrees C; depositing a conformal layer of cathodic material over the conformal polymeric layer; and depositing a cathodic current collector (513) over the conformal layer of cathodic material. INDEPENDENT CLAIMS are included for:    (1) an energy storage device comprising: an anodic current collector substrate; the three-dimensional anode electrodes separated by a finite distance formed on a surface of the anodic current collector substrate such that portions of the surface of the anodic current collector remain exposed; an insulator layer disposed on the exposed portions of the surface of the anodic current collector between the three-dimensional electrodes; a conformal electrolytic polymeric layer formed over the three-dimensional electrodes and the insulator layer; a conformal layer of cathodic material formed over the electrolytic polymeric layer; and a cathodic current collector formed over the conformal layer of cathodic material; and    (2) an apparatus for forming an energy storage device on a substrate comprising: a first end; a second end; at least one continuous web of conductive material extending from the first end to the second end; a support system to support the at least one continuous web of conductive material from the first end to the second end; a first chamber disposed between the first end and the second end, where the first chamber comprises a target having a surface in contact with a processing region, and the target comprises a catalytic material; a power supply adapted to deliver energy to the target so that atoms from the surface of the target are deposited on a surface of a substrate disposed in the processing region; a second chamber disposed between the first end and the second end, where the second chamber comprises a hot filament adapted to be heated at a surface temperature higher than 1500 degrees C; a showerhead that is adapted to deliver a carbon source gas to form carbon nanotubes on the substrate using a hot wire chemical vapor deposition process; and a carbon source gas coupled with the showerhead; and a third chamber disposed between the first and the second end, where the third chamber comprises a first source configured to deliver an initiator source gas, a second source configured to deliver a monomer source gas, and a filament adapted to be heated at 300-450 degrees C configured and adapted to deposit a non-conductive polymer over the substrate to surround the carbon nanotubes using iCVD process.    DESCRIPTION OF DRAWING(S) - The figure shows a schematic cross-sectional view of an energy storage device.    Lithium-ion battery (500)    Insulative layer (505)    Cathodic current collector (513)    Anode electrode (510)    Non-reactive polymer. (520)