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momo悄悄

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专业: 电化学

[求助] 关于EIS阻抗谱~求科普：PEIS和GEIS的区别已有2人参与

如题，在很多电化学工作站中存在着这两种测试，在文献上也看到过这样的解释，但是还是不太理解，还求科普
For example, in corrosion applications, the polarization resistance is often determined under
potential control around the open circuit voltage (OCV). This is an appropriate approach if
the corrosion potential does not change during
the measurement. However, if the corrosion
potential drifts, a potentio controlled experiment defined to run at OCV could result in a
measurement being performed at an anodic or
cathodic potential with respect to the true OCV.
Under galvano control, drift is not a problem
as the desired zero-current condition is maintained throughout the recording, ensuring the
measurement is performed at the true corrosion potential [1]. In battery applications, it is
often of interest to determine the variation of
internal resistance during discharge/charge. In
this case it may also be appropriate to use the
galvano control in EIS measurements

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