一些电化学交流阻抗复数平面图旋转的物理意义

CORC > 厦门大学 > 2013年第19卷

	一些电化学交流阻抗复数平面图旋转的物理意义; Physical Essentials of Rotating Complex Impedance Diagram in Some Electrochemical Systems
	吴秉亮 ; Wu Bing-Liang
刊名	http://electrochem.xmu.edu.cn/CN/abstract/abstract9942.shtml
	2013-02-28
关键词	交流阻抗复数平面图旋转复数电容常相角元件固体电解质中间相 alternating current impedance rotation of complex impedance diagram complex capacitance constant phase element solid electrolyte interphase
英文摘要	本文讨论了电化学交流阻抗图中图形旋转的物理意义. 电化学体系等效电路中的电容基本上属复数电容，由此推导出在这个假设下的阻抗极坐标公式，及其参数的数学表达式. 实际上此表达式与很多电化学体系的实际阻抗谱相符，如：实际测量的理想极化电极的阻抗图并不是平行于虚轴的一条直线，而是其与实轴的交点顺时钟旋转了α角的直线，这时α=arctgC"/C'，即双层电容的耗散角；与RC并联电路有关的半圆阻抗图几乎都有同一方向的α角旋转，其值等于相关电容的耗散角. 若明确了旋转的物理意义，由电化学阻抗谱拟合得到的参数均可表征体系的性质，这对于寻求某些特殊性能的电池体系将是有用的.; The essential of the rotation of complex impedance diagram in some electrochemical systems is discussed. It is attributing to that the electrochemical capacitance usual is not simple real capacitor but must be complex number capacitance. As the examples: 1, the metal/support electrolyte electrode in the ideal polarization condition, the capacitance must be that of the electrochemical double layer and represents complex number properties. Its complex impedance diagram was not a line parallel to imaginary axis but rotated clockwise α=arctgC"/C'. 2, In the case of insertion/desertion electrodes, the capacitance must be that of the solid electrolyte interphase (SEI). The rotation of impedance diagram also was attributing to the complex number properties of the capacitance of SEI membrane. The capacity and the rotation angle may be used to characterize the electric and the structure properties of the SEI.; 作者联系地址：武汉大学化学与分子科学学院，湖北武汉 430072; Author's Address: College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China; 通讯作者E-mail：blwujin@yahoo.com.cn
语种	中文
出版者	厦门大学《电化学》编辑部
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/58567]
专题	2013年第19卷
推荐引用方式 GB/T 7714	吴秉亮,Wu Bing-Liang. 一些电化学交流阻抗复数平面图旋转的物理意义, Physical Essentials of Rotating Complex Impedance Diagram in Some Electrochemical Systems[J]. http://electrochem.xmu.edu.cn/CN/abstract/abstract9942.shtml,2013.
APA	吴秉亮,&Wu Bing-Liang.(2013).一些电化学交流阻抗复数平面图旋转的物理意义.http://electrochem.xmu.edu.cn/CN/abstract/abstract9942.shtml.
MLA	吴秉亮,et al."一些电化学交流阻抗复数平面图旋转的物理意义".http://electrochem.xmu.edu.cn/CN/abstract/abstract9942.shtml (2013).