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Zview中各元件代码指的是什么？
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如题，小弟用Zview进行拟合时，出现的CPE-T,CPE-P,W-R,W-P,W-T这些代码分别代表的是什么意思，请各位大神能给小弟一些指点，在此先先过大家！请大家不腻赐教！ [ 来自科研家族 锂电池世界 ] |
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★ ★ ★
小木虫: 金币+0.5, 给个红包，谢谢回帖
609644581: 金币+2 2012-07-07 09:26:56
小木虫: 金币+0.5, 给个红包，谢谢回帖
609644581: 金币+2 2012-07-07 09:26:56
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Parameters: CPE-T, CPE-P The CPE is defined by two values, CPE-T and CPE-P. If CPE-P equals 1 than the equation is identical to that of a capacitor. If CPE-P equals 0.5, a 45 degree line is produced on the Complex-Plane graph. When a CPE is placed in parallel to a resistor, a Cole-Element (depressed semi-circle) is produced. Often a CPE is used in a model in place of a capacitor to compensate for non-homogeneity in the system. For example, a rough or porous surface can cause a double-layer capacitance to appear as a constant phase element with a CPE-P value between 0.9 and 1. In fact, a capacitor is actually a constant phase element - one with a constant phase angle of 90 degrees. A CPE with CPE-P value of 0.5 can be used to produce an Infinite Length Warburg element. A Warburg element occurs when charge carrier diffuses through a material. Lower frequencies correspond to diffusion deeper into the material. If the material is thin, low frequencies will penetrate the entire thickness, creating a Finite Length Warburg element. If the material is thick enough so that the lowest frequencies applied do not fully penetrate the layer, it must be interpreted as infinite. The CPE produces the same spectrum as the 慼igh frequency?portion of a Finite Length Warburg when CPE-T = sqrt(W-T) / W-R. |
6楼2012-07-06 21:36:05
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简单回复
ygm895257楼
2012-07-07 17:33
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