请教三电极测试系统与两电极测试系统各自的风采与难堪？

三电极系统更稳定

两电极中的we和ce就象就象电路的正极和负极，但是电化学中这两个电极随着电解质的变化，电位变化不同，这就需要一个参考电位，来稳定工作电极，通过参考电极来得到工作电极的相对电位。

既然两电极体系可以在两个电极间获得稳定的电压降，对于两个电极间电流的测量应该没有什么影响吧！？

谢谢你的解答。

谢谢你的解答。我的工作中，常常是只关注某个电极的电位变化规律，而对另一个电极的变化淡漠，要实现这样的研究，看来只能用三电极体系了。再次表示感谢。

谢谢你的解答。谢谢！看来我只能采用三电极系统才是比较科学准确的做法。
但是我还想搞明白，同行中既有用三电极体系也有用两电极系统；有的是真正的三个电极独立又相通，有的是把工作电极和对电极搞在一起，再与参比电极相连。我想请教各自测定的效果会有很大差异吗？谢谢。

工作电极总是独立的，对电极和参比电极可以根据具体的情况选择是用一个电极既做参比又做对电极而组成双电极测试系统，或者参比和对电极分开，形成三电极测试系统。

是的，你讲的很有道理，我想知道你的“根据情况”的含意是什么？谢谢！

All electrochemical cells require at least two electrodes, since the potential of a given electrode can only be measured relative to another electrode, the potential of which must be constant (a reference electrode). In potentiometric measurements (such as measurement of pH), there is no current through the cell, and these two electrodes are sufficient (it should be noted that many pH and ion-selective electrodes used in potentiometric measurements are combination electrodes – both electrodes are contained within the same body). However, in a cyclic voltammetry experiment, an external potential is applied to the cell, and the current response is measured. Precise control of the external applied potential is required, but this is not possible with a two electrode system, due to the potential drop across the cell due to the solution resistance (potential drop (E) = current (i) x solution resistance (R)) and polarization of the counter electrode that is required to complete the current measuring circuit. Better potential control is achieved using a potentiostat and a three electrode system, in which the potential of one electrode (the working electrode) is controlled relative to the reference electrode, and the current passes between the working electrode and the third electrode (the auxiliary electrode).