| ZnO-Bi2O3二元陶瓷粉体电化学行为研究 |
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| 引用本文： | 王艳珍,钟庆东,巫欣欣,施利毅.ZnO-Bi2O3二元陶瓷粉体电化学行为研究[J].化学学报,2009,67(15):1743-1748. |
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| 作者姓名： | 王艳珍 钟庆东 巫欣欣 施利毅 |
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| 作者单位： | (a上海大学纳米科学与技术研究中心 上海 200444) (b上海大学环境与化学工程学院 上海 200072) (c上海市现代冶金与材料制备重点实验室 上海 200072) (d上海大学理学院 上海 200444) |
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| 基金项目： | 国家自然科学基金，教育部新世纪优秀人才支持计划，上海市教育委员会重点学科建设，教育部创新团队计划 |
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| 摘 要： | 采用电化学阻抗谱和电位-电容测试及Mott-Schottky分析技术研究了ZnO-Bi2O3粉体电极在0.5 mol/L NaCl溶液中的电化学行为. 研究表明, ZnO-Bi2O3粉体表现为n型半导体; 随着Bi2O3含量的增加或混合时间的延长, 粉体的阻抗增大, 空间电荷层电容Csc减小, 载流子浓度ND减小; 经高温烧结成二元压敏陶瓷, 随着混合时间的延长, 电阻片综合电性能越好. 该方法可有效评价二元陶瓷粉体混合均匀性.
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| 关 键 词： | 电化学阻抗谱 电位-电容法 Mott-Schottky分析 载流子浓度 |
| 收稿时间： | 2008-12-15 |
| 修稿时间： | 2009-2-6 |
The Electrochemical Behavior of ZnO-Bi2O3 Ceramic Powders |
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| Wang Yanzhen,Zhong Qingdong,Wu Xinxin,Shi Liyi.The Electrochemical Behavior of ZnO-Bi2O3 Ceramic Powders[J].Acta Chimica Sinica,2009,67(15):1743-1748. |
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| Authors: | Wang Yanzhen Zhong Qingdong Wu Xinxin Shi Liyi |
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| Institution: | (a Research Center of Nano Science and Technology, Shanghai University, Shanghai 200444) (b School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200072) (c Key Laboratory of State Power Corporation of China, Department of Environmental Engineering, Shanghai University, Shanghai 200072) (d College of Science, Shanghai University, Shanghai 200444) |
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| Abstract: | The electrochemical behavior of ZnO-Bi2O3 powder electrode immersed in 0.5 mol/L NaCl solution were investigated by the electrochemical impedance spectroscopy and potential-capacitance methods combining with Mott-Schottky analysis. The result showed that the powder electrodes showed n-type semi- conductor. With increasing of the Bi2O3 content in the ZnO powder and prolongation of mixing time, the electrochemical impedance spectrum (EIS) impedance of the electrodes increased gradually, the Csc of the powder ... |
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| Keywords: | electrochemical impedance spectroscopy potential-capacitance method Mott-Schottky analysis charge carrier density |
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