纳米级掺杂LaNiO_3的氧还原性能

Catalytic activity of nano-level doped LaNiO_3 for cathodic reduction of oxygen

用溶胶-凝胶法制备双功能氧电极纳米级催化剂La0.6Ca0.4CoO3,LaNiO3,LaNi0.9Fe0.1O3,La0.9Sr0.05Ni0.9Fe0.1O3,用XRD技术对催化剂进行表征.并采用稳态极化曲线考察不同催化剂的氧还原催化活性。结果表明,纳米级钙钛矿型催化剂LaNi0.9Fe0.1O3和La0.95Sr0.05Ni0.9Fe0.1O3具有民好的氧还原催化活性。

Nano-level Lao0 Ca0.4 CoO3, LaNiQ3, LaNi0. 9 Fe.0.1 O3, La0.95 Sr0.05 Ni0.9 Fe0.1 O3 perovskite composite oxides which could be used as the catalysts of bifunctional oxygen electrode were prepared by sol-gel method. The characterization of the samples was carried out by XRD. Their electrocatalytic activity at oxygen reduction electrode were investigated by steady polarization curves method. The results showed that LaNi0.9 Fe0.1O3 and La0.95Sr0.05Ni0.9Fe0.1O3 used as catalyst of oxygen reduction electrode had excellent catalytic activity.