| 氯离子浓度对锌电积用铝基铅合金复合β-PbO2颗粒阳极行为的影响 |
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| 引用本文： | 杨健,陈步明,王帅,郭忠诚. 氯离子浓度对锌电积用铝基铅合金复合β-PbO2颗粒阳极行为的影响[J]. 应用化学, 2015, 32(8): 955-962. DOI: 10.11944/j.issn.1000-0518.2015.08.140434 |
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| 作者姓名： | 杨健 陈步明 王帅 郭忠诚 |
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| 作者单位： | 昆明理工大学冶金与能源学院 昆明 650093;昆明恒达科技股份有限公司 昆明 650106 |
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| 基金项目： | 国家自然科学基金资助项目(51004056) |
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| 摘 要： | 在酸性硫酸锌体系中研究了不同氯离子含量对Al/Pb-0.3%Ag-0.06%Ca复合β-PbO2颗粒阳极行为的影响, 并通过X射线衍射(XRD)以及扫描电子显微镜(SEM)等技术手段来表征阳极的特征。 结果表明, 随着氯离子含量的增加, 阳极的析氧过电位逐渐增大;阻抗呈逐渐增大的趋势;阳极表面膜β-PbO2和α-PbO2衍射峰强度整体呈现出减弱的趋势;阳极氧化膜上的枝状晶簇消失;腐蚀速率逐渐增大。 当氯离子含量为300 mg/L时, 阳极具有最大的表观电流密度i0, 表现出了最好的电化学性能以及耐腐蚀性。
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| 关 键 词： | 铝基 铅合金阳极 电化学性能 氯离子 耐腐蚀性 |
| 收稿时间： | 2014-12-19 |
Effects of Chloride Ion on the Properties of Al/Pb Alloy/β-PbO2 Composite Anode During Zinc Electrowinning |
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| YANG Jian,CHEN Buming,WANG Shuai,GUO Zhongcheng. Effects of Chloride Ion on the Properties of Al/Pb Alloy/β-PbO2 Composite Anode During Zinc Electrowinning[J]. Chinese Journal of Applied Chemistry, 2015, 32(8): 955-962. DOI: 10.11944/j.issn.1000-0518.2015.08.140434 |
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| Authors: | YANG Jian CHEN Buming WANG Shuai GUO Zhongcheng |
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| Affiliation: | Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, China;Kunming Hendera Science and Technology Co. Ltd., Kunming 650106, China |
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| Abstract: | The anodic behavior of Al/Pb-0.3%Ag-0.06%Ca/β-PbO2 composite electrode in the acidic zinc sulphate containing different concentrations of Cl- was studied. The microstructures were investigated by scanning electron microscopy(SEM) and X-ray diffraction(XRD). With the increase of Cl- concentration, the oxygen evolution overpotential, impedance and corrosion rate increase gradually; the intensity of diffraction peak of β-PbO2 and α-PbO2 decreases gradually; the dendritic crystal clusters on the anode surface disappear. When the Cl- concentration is 300 mg/L, the apparent current density(i0) of the anode reaches maximum and the anode shows the best electrochemical properties and corrosion resistance. |
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| Keywords: | Al substrate lead alloy anode electrochemical properties chloride ion corrosion resistance |
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