Spinels as cathodes for the electrochemical reduction of O2 and NO

被引：0
|
作者：
V. L. E. Simonsen
D. Find
M. Lilliedal
R. Petersen
K. Kammer
机构：
[1] Risø National Laboratory,Fuel Cells and Solid State Chemistry Department
[2] The University of Roskilde,Department of Life Sciences and Chemistry
来源：
Topics in Catalysis | 2007年 / 45卷
关键词：
spinels as cathodes; electrochemical reduction of O; electrochemical reduction of NO;
D O I：
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中图分类号：
学科分类号：
摘要：
Spinels were synthesised and investigated as electro-catalyst for the electrochemical reduction of oxygen and nitric oxide using cyclic voltammetry and cone shaped electrodes. The following four spinels were investigated; CoFe2O4, NiFe2O4, CuFe2O4 and Co3O4. The composition CuFe2O4 revealed the largest difference in activity between reduction of oxygen and the reduction of nitric oxide, the activity being highest for the reduction of nitric oxide. The material is probably not stable when polarised cathodically. However it seems that the electrode material can be regenerated upon oxidation. NiFe2O4 is also more active for the reduction of nitric oxide than for the reduction of oxygen, whereas the cobalt containing spinels have a higher activity for the reduction of oxygen than for the reduction of nitric oxide.
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页码：143 / 148
页数：5
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