直接エタノール形燃料電池の発電性能

抄録

This paper refers to the experimental results of power generation performance of direct ethanol fuel cell, which employs the composite anode catalysts such as Pt-SnO₂ and Pt-Rh. The operating temperature was set at 25OC. The mass ratios of Pt:SnO₂ (or Rh) were adjusted at 9:1, 1:1 and 3:1. The ethanol concentrations were set at 1.1M, 3.3M and 5.4M. It was found that the adequate mass ratio was 3:1 and the proper ethanol concentration was 1.1M. The addition of SnO₂ and Rh was effective for the improvement of power generation performance. However, the effectiveness of SnO₂ and Rh on the power generation performance was lower than that of Ru. Based on the results of cyclic voltammetry, the voltammogram of Pt-SnO₂ was almost same as that of Pt, but different from that of Pt-Ru. It was suggested that the pathways of the ethanol electrochemical oxidation on Pt-SnO₂ was different from those on Pt-Ru.