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您好。我有两个问题想请教您。问1:在LSV图中求onset ... 已有1人参与
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您好。我有两个问题想请教您。问1:在LSV图中求onset potential的标准方法。问2:如何用LSV图拟合tafel斜率。拜托请给详细一点的解答或者推荐点文章。 发自小木虫Android客户端 |
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snow5599: 金币+5, ★★★很有帮助 2018-05-11 11:21:18
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snow5599: 金币+5, ★★★很有帮助 2018-05-11 11:21:18
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是的, 很好的问题。 首先理解什么是onset potential和tafel斜率?这样就不一定局限在LSV测量, 任何的IV曲线都可以获得启示。 https://www.researchgate.net/pos ... ntial_from_LSV_plot https://www.researchgate.net/post/What_is_onset_potential_exactly onset potential and tafel slope: the onset potential means the potential at which the electron transfer process for a specific redox process begins(i.e on set) as indicated by rise in current from zero. This was mentioned in my earlier post. The Tafel plot is a semi-logaritmic plot ( log(i) vs E ) derived from the LSV that is meant for understanding the mechanism of electron transfer. https://en.wikipedia.org/wiki/Tafel_equation 一些经典的说法,还是回到: References on Physical Electrochemistry The following are references are useful for learning more about the techniques that are available in the Physical Electrochemistry software. General References Allen J. Bard and Larry R. Faulkner, Electrochemical Methods: Fundamental and Applications, John Wiley & Sons, New York (2000). ISBN 0-471-04372-9. Kissinger and Heineman, Laboratory Techniques in Electroanalytical Chemistry, 2nd ed., CRC Press, 1996. Cyclic Voltammetry, 类似LSV。 R. S. Nicholson and I. Shain, Anal. Chem.36(1964), 706, and Anal. Chem., 37(1965), 178. R. S. Nicholson, Anal. Chem., 37(1965), 1351. |
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