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[ÇóÖú] ºãÏà½ÇÔ­¼þCPEÓëQPE ÒÑÓÐ2È˲ÎÓë

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zhenwuhuang

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±ÌË®ãöãö: ½ð±Ò+6, ¡ï¡ï¡ï¡ï¡ï×î¼Ñ´ð°¸ 2014-07-30 11:48:21
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 ‘high frequency?portion of a Finite Length Warburg when  CPE-T = sqrt(W-T) / W-R.
2Â¥2014-07-27 14:02:30
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½ð³æ (ÕýʽдÊÖ)

ÒýÓûØÌû:
2Â¥: Originally posted by zhenwuhuang at 2014-07-27 14:02:30
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 ...

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3Â¥2014-07-30 11:49:36
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±ÌË®ãöãö

½ð³æ (ÕýʽдÊÖ)

ÒýÓûØÌû:
2Â¥: Originally posted by zhenwuhuang at 2014-07-27 14:02:30
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 ...

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±ÌË®ãöãö: ½ð±Ò+5, ¡ï¡ï¡ïºÜÓаïÖú 2014-08-01 10:05:35
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5Â¥: Originally posted by àÖཧ¥Ð¡¿âÂå at 2014-08-01 06:41:52
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5Â¥: Originally posted by àÖཧ¥Ð¡¿âÂå at 2014-08-01 06:41:52
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×î´óµÄ²î±ð¾ÍÊÇ T = (Q)^n
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±ÌË®ãöãö: ½ð±Ò+4, ¡ï¡ï¡ïºÜÓаïÖú 2014-09-30 12:09:39
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8Â¥: Originally posted by àÖཧ¥Ð¡¿âÂå at 2014-08-01 14:05:57
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