High capacitance energy storage device
First Claim
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1. A high capacitance energy storage device, comprising:
- a housing electrically isolated from, and lined with, current collectors, said current collectors being electrically connected to contacts mounted on said housing;
at least one capacitive cell having a first electrode separated from a second electrode by a non-conductive, chemically inert membrane, said electrodes formed of a regularly structured carbonized and activated woven fabric impregnated with an electrolyte, said membrane permitting free passage of molecules of said electrolyte therethrough; and
conductive, chemically inert separators, provided between and being in electrical and mechanical contact with said electrodes and said current collectors of the housing, said separators chemically isolating said cell from said housing, and said separators being formed from a graphite-based material, wherein each of said electrodes is formed of a plurality of compressed layers of said regularly structured carbonized and activated woven fabric.
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Abstract
A high capacitance energy storage device where electrodes (20, 22) are formed of layers of a carbonised, activated woven fabric that has been impregnated with an electrolyte. The electrolyte is absorbed by active centers at the surface of the carbonised, activated material. The prepared fabric is sandwiched between alternating graphite-based separators (16, 18) and non-conductive membranes (24) to form a capacitor structure exhibiting very high capacitance, non-degradation over multiple charging/discharging cycles, and, in AC installations, reliable and reproducible characteristics. In addition, the materials in the device are environmentally friendly.
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Citations
15 Claims
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1. A high capacitance energy storage device, comprising:
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a housing electrically isolated from, and lined with, current collectors, said current collectors being electrically connected to contacts mounted on said housing; at least one capacitive cell having a first electrode separated from a second electrode by a non-conductive, chemically inert membrane, said electrodes formed of a regularly structured carbonized and activated woven fabric impregnated with an electrolyte, said membrane permitting free passage of molecules of said electrolyte therethrough; and
conductive, chemically inert separators, provided between and being in electrical and mechanical contact with said electrodes and said current collectors of the housing, said separators chemically isolating said cell from said housing, and said separators being formed from a graphite-based material, wherein each of said electrodes is formed of a plurality of compressed layers of said regularly structured carbonized and activated woven fabric. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A capacitive cell for a high energy storage device comprising:
a first electrode separated from a second electrode by a non-conductive, chemically inert membrane, said electrodes formed of a regularly structured carbonized and activated woven fabric impregnated with an electrolyte, said membrane permitting free passage of molecules of said electrolyte therethrough; and
conductive, chemically inert separators, provided at outer surfaces of the cell and being in electrical and mechanical contact with said electrodes, said separators chemically isolating said cell, and said separators being formed from a graphite-based material, wherein each of said electrodes is formed of a plurality of compressed layers of said regularly structured carbonized and activated woven fabric.- View Dependent Claims (12, 13, 14, 15)
Specification