Particulate porous carbon material, particulate carbon material aggregate, and production method for particulate porous carbon material
AssigneeToray Industries, Inc.
InventorsTakaaki Mihara, Kentaro Tanaka, Kosaku Takeuchi, Tomoyuki Horiguchi
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Abstract
The present invention relates to a particulate porous carbon material having a continuous porous structure, the particulate porous carbon material satisfying the following A to C: A: branch portions forming the continuous porous structure have an aspect ratio of 3 or higher; B: the branch portions have aggregated through joints interposed therebetween, the number of the aggregated branch portions (N) being 3 or larger; C: a ratio of the number of the aggregated branch portions (N) to the number of the joints (n), N/n, is 1.2 or larger.
Claims19
A particulate porous carbon material having a continuous porous structure, the particulate porous carbon material satisfying the following A to C:
- A:
- branch portions forming the continuous porous structure have an aspect ratio of 3 or higher;
- B:
- the branch portions have aggregated through joints interposed therebetween, the number of the aggregated branch portions (N) being 3 or larger;
- C:
- a ratio of the number of the aggregated branch portions (N) to the number of the joints (n), N/n, is 1.2 or larger.
A process for producing a particulate porous carbon material, the process comprising the following steps in the following order:
- step 1:
- a step in which 10-90% by weight of a carbonizable resin and 90-10% by weight of an eliminable resin are brought into a compatibly mixed state to obtain a resin mixture;
- step 2:
- a step in which the resin mixture obtained in the step 1 is caused to undergo phase separation to form a microstructure, and the microstructure is fixed to obtain a precursor;
- step 3:
- a step in which the precursor obtained in the step 2 is stretched;
- step 4:
- a step in which the stretched precursor is carbonized to obtain a porous carbon material;
- and
- step 5:
- a step in which the porous carbon material obtained in the step 4 is pulverized;
- wherein the eliminable resin is removed either between the step 3 and the step 4 or simultaneously with the step 4.
A process for producing a particulate porous carbon material, the process comprising the following steps in the following order:
- step 1:
- a step in which 10-90% by weight of a carbonizable resin and 90-10% by weight of an eliminable resin are brought into a compatibly mixed state to obtain a resin mixture;
- step 2:
- a step in which the resin mixture obtained in the step 1 is caused to undergo phase separation to form a microstructure, and the microstructure is fixed to obtain a precursor;
- and
- step 3:
- a step in which the precursor obtained in the step 2 is stretched, and thereafter further comprising:
- a step in which the stretched precursor is pulverized;
- and
- step 4:
- a step in which the pulverized precursor is carbonized,
- wherein the eliminable resin is removed either between the step 3 and the step 4 or simultaneously with the step 4.
Dependencies are inferred from the claim text.