Mesoporous carbon composite containing carbon nanotube
AssigneeSamsung SDI Co., Ltd.
InventorsChan-ho Pak, Hyuk Chang, Dae-jong Yoo, Ji-man Kim
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Abstract
Provided are a CNT-mesoporous silica composite, a CNT-mesoporous carbon composite, a supported catalyst using the CNT-mesoporous carbon composite as a support, and a fuel cell using the supported catalyst as the anode, cathode, or both anode and cathode. The CNT-mesoporous carbon composite is prepared using the CNT-mesoporous silica composite. The CNT-mesoporous carbon composite has a high electrical conductivity due to the CNTs contained therein, and thus, when the CNT-mesoporous carbon composite is used in an electrode of a fuel cell, the fuel cell has a remarkably improved performance relative to the conventional catalyst support which does not contain CNTs.
Claims23
A carbon nanotube (CNT)-mesoporous carbon composite comprising CNTs and mesoporous carbon,
- wherein mesopores of the CNT-mesoporous carbon composite have an average diameter of about 2 nm to about 10 nm,
- wherein the carbon nanotubes are uniformly dispersed in the mesoporous carbon.
A method of preparing a CNT-mesoporous carbon composite, the method comprising:
- preparing a carbon precursor sol by mixing a polymerizable carbon-containing compound with a carrier;
- impregnating a CNT-mesoporous silica composite with the carbon precursor sol;
- polymerizing the carbon precursor sol disposed in the CNT-mesoporous silica composite to obtain a carbon precursor disposed in the CNT-mesoporous silica composite;
- thermally decomposing the carbon precursor to obtain a carbon structure disposed in the CNT-mesoporous silica composite;
- treating the carbon structure disposed in the CNT-mesoporous silica composite with a solution capable of dissolving silica to remove the silica, to thereby form a mesoporous carbon in which the carbon nanotubes are uniformly dispersed.
A supported catalyst comprising:
- a CNT-mesoporous carbon composite comprising CNTs and mesoporous carbon;
- and
- metal catalyst particles uniformly supported on the CNT-mesoporous carbon composite,
- wherein mesopores of the CNT-mesoporous carbon composite have an average diameter of about 2 nm to about 10 nm, and
- wherein the carbon nanotubes are uniformly dispersed in the mesoporous carbon.
Dependencies are inferred from the claim text.