摘要
利用Matlab研究尖端导体附近的场强分布并将其可视化,并讨论了尖端导体在电化学领域中的应用。模拟计算结果显示导体尖端附近的场强相对于空间其它区域要高出1个量级以上,且随着尖端半顶角的减小而迅速增大。该结果从另一侧面解释了在催化电极体系中,不同形貌的催化剂颗粒可能由于其周围场强分布不同,会导致不同的催化活性。例如由锥形尖端或毛刺等组成的催化剂颗粒,由于其尖端附近场强很大,有可能获得比曲率较小的颗粒更高的电化学反应速率。
The electric field intensity distribution of the sharp-point conductor was studied by using Matlab, and its application in the field of electrochemistry was discussed. The calculated results showed that the electric field intensity in the area near the tip is more than 10 times larger than that in other area. Furthermore, the electric field intensity increases dramatically as the semi-vertical angle decreases. On the other hand, the results explain why the shape or morphology of the catalyst particles on the electrode can influence the catalytic efficiency. For instance, if the catalyst particles consist of cones or tips, they may have a higher catalytic efficiency compared with other smooth structure owing to their larger electric field intensity.
出处
《信息通信》
2011年第5期7-8,共2页
Information & Communications
基金
上海交通大学大学生创新实践计划(IPP1037
IPP3046)资助项目
关键词
尖端导体
尖端效应
场强分布
Sharp-point conductor
point effect, electric field intensity distribution
