Macroreticular carbonaceous material useful in energy storing devices
First Claim
1. An energy storage device comprising a macroreticular carbonaceous material having a distribution of micropores, mesopores and macropores wherein the macroreticular carbonaceous material has a total surface area of from greater than 500 m2/g to 2500 m2/g and wherein 20% to 80% of the total surface area is due to pores with diameters of from 17 angstroms to 100,000 angstroms.
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Abstract
The present invention relates to an energy storage device comprising a macroreticular carbonaceous material having a distribution of micropores, mesopores and macropores wherein the macroreticular carbonaceous material has a total surface area of from greater than 500 m2/g to 2500 m2/g and wherein 20% to 80% of the total surface area is due to pores with diameters of from 17 angstroms to 100,000 angstroms. In addition, the present invention relates to an energy storage device comprising a macroreticular carbonaceous material having at least one first distinct peak representing a pore size of less than or equal to 20 angstroms when measured utilizing H-K dv/dlog(W) pore size distribution and at least one second distinct peak representing a pore size greater than 20 angstroms when measured utilizing BJH dv/dlog(D) pore size distribution.
107 Citations
16 Claims
- 1. An energy storage device comprising a macroreticular carbonaceous material having a distribution of micropores, mesopores and macropores wherein the macroreticular carbonaceous material has a total surface area of from greater than 500 m2/g to 2500 m2/g and wherein 20% to 80% of the total surface area is due to pores with diameters of from 17 angstroms to 100,000 angstroms.
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8. An energy storage device comprising a carbonaceous material wherein measurement of pore size distribution of the carbonaceous material yields at least one first distinct peak representing a pore size less than 20 angstroms when measured utilizing H-K dv/dlog(W) pore size distribution and at least one second distinct peak representing a pore size greater than 125 angstroms when measured utilizing BJH dv/dlog(D) pore size distribution.
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10. A carbon based energy storage device wherein capacitance decreases less than 100% in an organic electrolyte and less than 75% in an aqueous electrolyte in going from 0.1 Hz to 1000 Hz.
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13. A macroreticular carbonaceous material produced by pyrolysis of a macroreticular phenol/formaldehyde polymer wherein the phenol/formaldehyde polymer is formed by a base catalyzed condensation reaction of phenol with formaldehyde at a phenol/catalyst ratio of less than 50.
- 14. A process for making a carbonaceous material comprising pyrolysis of a polymer wherein pore size and density can be changed by swelling or shrinking the pores of the polymer prior to pyrolysis.
Specification