Modern spectro-electrochemical techniques make it possible to find in situ the structure of intermediate and final products of electrolysis. However, more commonly, the contribution of the el ect r ode a nd nearel ect r ode ef f ect s remains unclear, and in addition, the results obtained relate to the t otal r eaction volu me. Thus, it remains impossible to establish a cha nge in t he str uctur e of t he pr odu ct s at the transition surface → near-electrode zone → volume. In situ spectral measuring tied to the tip, such as in the case of AFM would be very valuable here. In the case of NMR, e.g., this is a matter for the future ; an insight into what has been achieved in EC-NMR today can be obtained, for example, from recent publications .