Carbon supercapacitor electrode materials
First Claim
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1. A carbon electrode formed from a carbon, which carbon is prepared by a process comprising the step of hydrogenating the carbon followed by the step of sulfonating the carbon.
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Abstract
A carbon material useful as an electrode in supercapacitors and a method for preparing the same. In one method, a phenolic resin powder, optionally combined with a carbon powder, is formed into a layer less than 0.01 inches thick; the temperature of the resin is increased at a rate of approximately 0.1 to 4° C. per minute, thereby melting the resin into a porous network; the network is carbonized, hydrogenated in a hydrogen atmosphere and sulfonated.
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Citations
20 Claims
- 1. A carbon electrode formed from a carbon, which carbon is prepared by a process comprising the step of hydrogenating the carbon followed by the step of sulfonating the carbon.
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3. A carbon electrode formed from a carbon which is prepared by a process comprising the steps of:
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forming a layer of phenolic resin powder; melting said phenolic resin powder under such conditions that the particles of said powder stick to themselves to form a porous network; carbonizing said porous network to form a carbonized network; and sulfonating said carbonized network. - View Dependent Claims (4, 5, 6, 7, 8, 9, 10, 11)
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12. A carbon electrode formed from a carbon which is prepared by a process comprising the steps of:
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forming a layer of phenolic resin powder and carbon powder; melting said phenolic resin powder under such conditions that the particles of said powder stick to themselves and to the carbon particles of said carbon powder to form a porous network; carbonizing said porous network to form a carbonized network; and sulfonating said carbonized network. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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Specification