Effects of Parameters for Preparing Carbon Nanotubes on the Capacitances of Manganese-Cobalt-Zinc Oxide/Carbon Nanotube Electrodes

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概要

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• A Co (catalyst)-Ti-coated silicon foil on which carbon nanotubes (CNTs) are directly grown by thermal chemical vapor deposition (CVD) with/without H2 and using different temperatures/volume flow rates of NH3 is optionally pretreated with hydrogen-plasma. Thereafter the CNTs are treated with nitrogen-plasma, and a manganese-cobalt-zinc oxide film is deposited on the CNTs by radio frequency sputtering. For the CNT electrode, at the 100th cycle of potential cycling, its specific capacitance at a CNT growing temperature of 750°C is higher than those at 700 or 800°C and the higher the NH3 flow rate while growing CNTs, the higher the specific capacitance. Furthermore, the specific capacitance of the manganese-cobalt-zinc oxide/CNT electrode for the CNTs grown in 50 cm3 min−1 NH3 is higher than that without NH3.

著者

• Lin Chuen-chang

  Department Of Chemical & Materials Engineering National Yunlin University Of Science And Technol

• LIN Chuen-Chang

  Department of Chemical & Materials Engineering, National Yunlin University of Science and Technology

• HO Yu-Sheng

  Department of Chemical & Materials Engineering, National Yunlin University of Science and Technology

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