Al/Pb/α-PbO_2复合惰性阳极材料的电化学合成

利用恒电流从碱性镀液中在Al/Pb表面电化学合成α-PbO 2沉积层,制备出Al/Pb/α-PbO 2复合惰性阳极材料。通过阳极极化法考察α-PbO 2镀液组成及镀液温度对在Al/Pb表面电化学合成α-PbO 2的影响,采用XRD和SEM分别测试Al/Pb基体材料及α-Pb O2沉积层的相结构和表面微观组织特征。结果表明：α-PbO 2的电化学合成分由几个不同的步骤完成;适宜的条件能有效提高α-Pb O2电化学合成速率并避免析氧副反应的发生;从碱性溶液中合成的α-Pb O2具有斜方晶型结构,沉积层由发育良好的圆球形晶胞构成。...

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Published in中国有色金属学报：英文版 Vol. 25; no. 6; pp. 2095 - 2102
Main Author 胡钢 徐瑞东 何世伟 陈步明 杨海涛 于伯浩 刘强
Format Journal Article
LanguageEnglish
Published 2015
Subjects
Al/Pb基体
α-PbO2
电化学合成
阳极极化
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Summary:利用恒电流从碱性镀液中在Al/Pb表面电化学合成α-PbO 2沉积层,制备出Al/Pb/α-PbO 2复合惰性阳极材料。通过阳极极化法考察α-PbO 2镀液组成及镀液温度对在Al/Pb表面电化学合成α-PbO 2的影响,采用XRD和SEM分别测试Al/Pb基体材料及α-Pb O2沉积层的相结构和表面微观组织特征。结果表明：α-PbO 2的电化学合成分由几个不同的步骤完成;适宜的条件能有效提高α-Pb O2电化学合成速率并避免析氧副反应的发生;从碱性溶液中合成的α-Pb O2具有斜方晶型结构,沉积层由发育良好的圆球形晶胞构成。
Bibliography:43-1239/TG
Gang HU, Rui-dong XU, Shi-wei HE, Bu-ming CHEN, Hai-tao YANG, Bo-hao YU, Qiang LIU（ 1. State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming 650093, China; 2. Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, China; 3. State Key Laboratory of Multi-Phase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China）
The α-PbO2 deposition layers were prepared on the surface of A1/Pb substrates by constant current electrosynthesis from an alkaline bath, and A1/Pb/α-PbO2 composite inert anode materials were obtained. The effects of the bath composition and bath temperature on the electrosynthesis of α-PbO2 were investigated by means of anodic polarization method, the phase structures and surface microstructures of AI/Pb and α-PbO2 deposition layers were tested by means of X-ray diffraction （XRD） and scanning electron microscopy （SEM）, respectively. The experimental data have shown that the process of α-PbO2 formation have several stages. The appropriate conditions can effectively improve the formation rate of α-PbO2 and avoid the occurrence of oxygen evolution reaction. The α-PbO2 deposition layer obtained in alkaline bath possesses rhombic structure, and it is composed of well developed spherical unit cells.
A1/Pb substrate; α-PbO2; electrosynthesis; anodic polarization
ISSN:1003-6326