Microwave synthesis and electrochemical characterization of mesoporous carbon@Bi2O3 composites

An efficient and quick microwave method has been employed to prepare worm-like mesoporous carbon@Bi2O3 composites for the first time. As-prepared products have been characterized by X-ray diffraction, N2 adsorption–desorption, scanning electron microscopy, transmission electron microscopy and inductive coupled plasma atomic emission spectroscopy. The electrochemical measurement shows the worm-like mesoporous carbon@Bi2O3 composites exhibits excellent capacitance performance and the maximum specific capacitance reaches 386 F g−1, three times more than the pure worm-like mesoporous carbon.