摘要
为了研究氧化锌阀片粉体的均匀性对其综合性能的影响，通过控制高能球磨时间得到了不同的氧化锌阀片粉体，并做成多孔电极，运用交流阻抗和电位一电容法对电极进行了测试，以探索混合粉体的均匀性与其电化学性能之间的关系。结果表明，随着氧化锌与混合添加剂粉体混合时间的延长，其阻抗减小；Mott-Schottky分析表明，混合粉体为n型半导体，且随着混合时间的延长Mort—Schottky关系曲线的直线段的斜率增大。
The properties of ZnO varistor were influenced by the uniformi- ty of powders. The ZnO varistor powder was prepared by controlling the time of high -energy ball milling and then was compacted and made into electrodes. The electrochemical properties of different electrode were in- vestigated in 0.5 mol/L NaCl solution by AC impedance spectroscopy and potential-capacitance method combing with Mott-Schottky analysis.The results revealed that the impedance decreased and the powder in the electrolyte was a n tape semiconductor, the slope of Mott-Schottky line increased along with the time of mixing in the ball-mill.
出处
《中国粉体技术》
CAS
北大核心
2009年第1期21-23,36,共4页
China Powder Science and Technology
基金
上海市科委学科带头人计划项目,编号:07XD14014
上海市科委技术创新人才团队建设专项项目,编号:06DZ05902
国家自然科学基金项目,编号:50571059,50615024
2007教育部新世纪优秀人才支持计划项目,编号:NCET-07-0536
上海市教育委员会重点学科建设资助项目,编号:J50102
教育部创新团队计划项目,编号:IRT0739。
