Activated carbon/polyacene composite and process for producing the same
First Claim
1. An activated carbon/polyacene composite containing activated carbon powder or fiber and having a selected molar ratio range of hydrogen atoms [H] to carbon atoms [C] as follows:
-
space="preserve" listing-type="equation">0.01≦
[H]/[C]≦
0.2wherein the resistivity of the composite is less than 1.4 Ω
-cm under a condition of no compression.
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Abstract
An activated carbon/polyacene composite is disclosed. The composite contains activated carbon powder or fiber and having a selected molar ratio range of hydrogen atoms [H] to carbon atoms [C] of 0.01≦[H]/[C]≦0.2. It provides two or more times the capacitance per unit volume, and enables reduction of the equivalent series resistance of an electric double-layer capacitor without compression. It therefore is a suitable composite for use as polarizable electrodes for electric double-layer capacitors. The composite can be made by mixing activated carbon powder or fiber and a thermosetting resin powder such as phenolin resin powder, and subjecting the mixture to heat treatment in a nonoxidizing atmosphere at temperatures between 600° and 1000° C. which is insufficient to reach full carbonization of the thermosetting resin.
65 Citations
17 Claims
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1. An activated carbon/polyacene composite containing activated carbon powder or fiber and having a selected molar ratio range of hydrogen atoms [H] to carbon atoms [C] as follows:
-
space="preserve" listing-type="equation">0.01≦
[H]/[C]≦
0.2wherein the resistivity of the composite is less than 1.4 Ω
-cm under a condition of no compression. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A process for producing activated carbon/polyacene composite comprising the steps of:
- mixing activated carbon powder or fiber and a phenole-formaldehyde resin powder to provide a mixture of them; and
subjecting said mixture to heat treatment in nonoxidizing atmosphere within a range of 600°
to 1000°
C. which is insufficient to reach full carbonization of said phenole-formaldehyde resin. - View Dependent Claims (8, 9)
- mixing activated carbon powder or fiber and a phenole-formaldehyde resin powder to provide a mixture of them; and
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10. A process for producing activated carbon/polyacene composite comprising the steps of:
- mixing activated carbon powder or fiber and a thermosetting resin powder to provide a mixture of them; and
subjecting said mixture to heat treatment in nonoxidizing atmosphere within a temperature range which is insufficient to reach full carbonization of said thermosetting resin;wherein said thermosetting resin is phenole-formaldehyde resin, and said heat treatment temperature is within a range of 700°
to 900°
C. - View Dependent Claims (12)
- mixing activated carbon powder or fiber and a thermosetting resin powder to provide a mixture of them; and
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11. A process for producing an activated carbon/polyacene composite comprising the steps of:
- mixing phenolic activated carbon powder and phenole-formaldehyde resin powder to provide a mixture of them such that a ratio of said carbon powder to said resin powder is selected to be 50/50 to 70/30 by weight; and
heating said mixture in nonoxidizing atmosphere at a temperature range of 700°
to 900°
C. for two hours.
- mixing phenolic activated carbon powder and phenole-formaldehyde resin powder to provide a mixture of them such that a ratio of said carbon powder to said resin powder is selected to be 50/50 to 70/30 by weight; and
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13. An activated carbon/polyacene composite containing activated carbon powder or fiber and a phenole-formaldehyde resin powder and having a selected molar ratio range of hydrogen atoms [H] to carbon atoms [C] as follows:
space="preserve" listing-type="equation">0.01≦
[H]/[C]≦
0.2.- View Dependent Claims (14, 15, 16, 17)
Specification