Abstract
By using loading test and high temperature test, the electric-property stability of NbO anode and metal Nb anode were studied in comparison. The reason for higher stability of NbO anode was analyzed by thermodynamics and kinetics. The loading test was performed in 38% H 2SO 4 at 85 °C and 12 V for 10 d. The high temperature test was carried out at 250 °C in air atmosphere for 30 h. It is found that the NbO anode possesses higher ability to restrain crystallization film as compared with metal Nb anode. It is considered that, oxygen in NbO anode matrix restrains the migration of oxygen in Nb 2O 5 anodic oxidation film to matrix, and results in that the anodic oxidation film has higher stability.
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