抄録
Direct glucose fuel cells have attracted the interests as one of the promising power sources for portable electric devices. To improve the performance of the fuel cells, the addition to the enlargement of electrode, optimal surface structure design suitable for fuel supply is required. The present study aims to clarify the optimal surface structure by studying on the relationship between enlargement of the surface area of electrode and its structure suitable for fuel supply. Vertically aligned carbon nanotubes (CNTs) were synthesized on the copper electrode (20×20×0.1 mm) by chemical vapor deposition. To control the density of CNTs, Ar plasma was irradiated on the CNTs/electrode as function of time. The jagged-shaped clumping structure was realized by using self-organization function of CNTs. With increasing of the irradiation time of the Ar plasma, the interval between the clumping structures becomes larger. Ar plasma irradiation is an effective method to control the structure size of CNTs. Gold nanoparticles was decorated on the clumping structure by deposition reduction method. In addition, the electrode property of different interval clumping structure was performed by cyclic voltammetry (CV) method. From CV measurement, the effective surface area of CNTs/electrode varied as the interval between the clumping structures was changed.
