Al2O3-TiO2 composite oxide films on etched aluminum foil fabricated by electrodeposition and anodization

被引：12

作者：

Bu JunFu ^{[1
]}

Sun Lan ^{[1
]}

Wu Qi ^{[1
]}

Wang MengYe ^{[1
]}

Lin ChangJian ^{[1
,2
]}

机构：

[1] Xiamen Univ, Dept Chem, Coll Chem & Chem Engn, Xiamen 361005, Peoples R China

[2] Xiamen Univ, State Key Lab Phys Chem Solid Surfaces, Xiamen 361005, Peoples R China

来源：

SCIENCE CHINA-CHEMISTRY | 2011年 / 54卷 / 10期

基金：

中国国家自然科学基金;

关键词：

electrodeposition; titanium oxide; composite film; aluminum electrolytic capacitor; anodization; ANODIC-DISSOLUTION; TITANIUM; PRECIPITATION; VOLTAGE;

D O I：

10.1007/s11426-011-4377-9

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Ti species have been deposited on low-voltage etched aluminum foils by a simple electrochemical method using a Ti anode as Ti source in a Ti-free I-2-dissolved acetone solution. After annealing at 500-600 degrees C in air, an Al2O3-TiO2 composite oxide film was formed on the surface of the etched aluminum foil by anodizing galvanostatically in an ammonium adipate solution. The effects of I-2 concentration in the acetone solution, applied anode voltage, electrolysis time, and annealing temperature on the specific capacitance of the aluminum anode foils were investigated. The TiO2-deposited specimens prepared by applying a potential of 50 V for 3 min in 2.5 mM I-2-added acetone solution followed by annealing at 550 degrees C after anodization exhibited the highest specific capacitance, with an enhancement of 22% compared with pure etched aluminum foil specimens. The electro-deposition process and the change of the anode voltage during the anodization were analyzed.

引用

页码：1558 / 1564

页数：7

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