Electrochemical properties of an ordered mesoporous carbon prepared by direct tri-constituent co-assembly

An ordered mesoporous carbon with a high surface area of 2390 m(2)/g and a large pore size of 6.7 nm was synthesized through an organic-inorganic-surfactant tri-constituent co-assembly method which used resols as the carbon precursor, silicate oligomers as the inorganic precursor and triblock copolymer as the soft template. The electrochemical properties of this carbon were evaluated as an electrode material for electrochemical double layer capacitor and lithium-ion battery. It shows rectangular-shaped cyclic voltammetry curves over a wide range of scan rates even up to 200 mV/s between 0 and 3 V, with a large capacitance of 112 F/g in nonaqueous electrolyte. As a negative electrode material for lithium-ion battery, it delivers a reversible specific capacity as high as 1048 mAh/g and a good cycling ability with capacity retention of 500 mAh/g over 50 cycles. (C) 2007 Elsevier Ltd. All rights reserved.