Morphology of alpha-lead dioxide electrodeposited on aluminum substrate electrode

Alpha-lead dioxide was deposited by anodization of alkaline solution containing HPbO2^- anions. Scanning electron microscopy （SEM） results show that the morphology is remarkably affected by the current density, concentration of HPbO2^- anions, bath temperature and electroplating time. Compact and we...

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Bibliographic Details
Published in:Transactions of Nonferrous Metals Society of China 2010, Vol.20 (1), p.97-103
Main Author: 陈步明 郭忠诚 杨显万 曹远栋
Format: Article
Language:English
Subjects:
alpha-lead dioxide
aluminum substrate
Anions
composition
Current density
Density
Deposition
Dioxides
electrodeposition
Electroplating
morphology
Plating baths
Scanning electron microscopy
二氧化铅
底电极
扫描电子显微镜
电镀时间
铅形态
镀液温度
非化学计量
高电流密度
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Summary:Alpha-lead dioxide was deposited by anodization of alkaline solution containing HPbO2^- anions. Scanning electron microscopy （SEM） results show that the morphology is remarkably affected by the current density, concentration of HPbO2^- anions, bath temperature and electroplating time. Compact and well adherent layers are possibly obtained under conditions of current densities ≤3 mA/cm^2, electrolyte containing 4 mol/L NaOH and 0.12-0.14 mol/L lead （Ⅱ）, bath temperature of 40 ℃, and electroplating time of 2 h. EDS analyses show that the PbO2 deposited in alkaline condition is highly non-stoichiometric at high current density.
ISSN:1003-6326
DOI:10.1016/S1003-6326(09)60103-5