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zlin: 金币+3, ECEPI+1, 鼓励交流~ 2012-06-03 22:05:30
The calibration of SCE reference electrode is performed in a standard three-electrode system with polished Pt wires as the working and counter electrodes, and the SCE as the reference electrode. Electrolytes are pre-purged and saturated with high purity H2. Linear scanning voltammetry (LSV) is then run at a scan rate of 0.1 mV sㄢ, and the potential at which the current crossed zero is taken to be the thermodynamic potential (vs. SCE) for the hydrogen electrode reactions. For example, in 0.1 M HClO4, the zero current point is at -0.304 V, so E (RHE) = E (SCE) + 0.304 V; in 0.1 M KOH, the zero current point is at -0.998 V, so E (RHE) = E (SCE) + 0.998 V.

这种相对电位方法很特殊啊!我说的吗。有人能指出为什么要采用这种相对电位方法呢?

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5楼2012-06-02 08:36:52
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