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Abstract

A supercapacitor, principally ceramic, with a fast recharging rate and extremely high energy density. Energy densities can exceed 9.5 KW-hr/L (0.27 MW-hr/ft³). High permittivity, high voltage breakdown and nanoporous electrodes achieve these features. High permittivity is reached through a ceramic dielectric consisting of a titanium oxide variant, doped with various combinations of trivalent positive ions. Example: (Al_0.5Nb_0.5)_0.5%Ti_99.5%O₂. The dielectric permittivity is further increased by adding layers of conductive island matrices placed in the dielectric. Charge capacity is expanded by use of nanoporous electrodes with an effective area over twenty times a flat surface electrode. Example: graphene. The key process involves sintering wafers, adding conductive island matrices' conductors, typically vacuum impregnating wafers with a polymer, then stacking wafers and electrodes, followed by connecting electrodes. Subassemblies are then stacked into unlimitedly larger macro-assemblies.

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First Claim