BaCe_(0.9)Y_(0.1)O_(3-α)固体氧化物燃料电池电极极化性能的研究

Study on polarization characteristics of electrode of solid oxide fuel cell based on BaCe_(0.9)Y_(0.1)O_(3-α)

以BaCe0.9Y0.1O3-α氧化物陶瓷为固体电解质,以多孔性Pt为电极材料,组成氢-空气燃料电池,用电流遮断法分别测定了600℃～1000℃范围燃料电池输出电流时的欧姆电位降和正负极的电极极化 结果表明,该燃料电池的优良性能与Pt电极很小的极化作用密切相关,正负极的电极极化皆随着温度的升高而变小。

<Abstrcat>Using BaCe0.9Y0.1O3-α oxide ceramic as solid electrolyte and porous Pt as electrode material, hydrogen-air fuel cell was constructed. The ohmic potential fall and polarization characteristics of the fuel cell on discharging were determined in the temperature range of 600～1000℃ by current interruption method. It is clear that the excellent performances of the fuel cell are closely related to the small polarization, the polarization of both the electrodes decreases with increasing temperature and the polarization of cathode is smaller than that of anode.