The shielding coefficient is one s and g is nef f irient; Sh When the disk electrode of the rotating ring disk electrode is in an open circuit state (equal to nonexistence), when the rotational speed is fixed, the species can produce a limiting diffusion current (ma,,} KN7) on the ring electrode; when the disk and ring electrodes are in the same potential of species and diffusion control, because some of them have less reaction on the disk electrode, the ring current transmitted to the ring electrode is reduced, and the ring current is {Td, J} tv. The latter must be smaller than the former, and the ratio of the two is called shielding coefficient, that is, its value is independent of speed. The size of sh can be used to determine whether the electrode process is accompanied by chemical reaction or adsorption and desorption processes. [1]
