## electrode current density, $$j$$

https://doi.org/10.1351/goldbook.E01952
If the charging current is negligible, in the case of a single @[email protected], the electrode @[email protected] ($$\text{c.d.}$$) of the @[email protected] flowing through the electrode is related to the flux density of a species B by the equation: $j = n\ \nu _{\text{B}}^{-1}\ F\ \left(N_{\text{B}}\right)_{e}$ where $$\left(N_{\text{B}}\right)_{e}$$ is the normal component of the vector $$N_{\text{B}}$$ at the electrode-solution @[email protected], $$n$$ is the @[email protected] of the @[email protected] and $$\nu _{\text{B}}$$ is the @[email protected] of species B. The ratio $$\frac{n}{\nu _{\text{B}}}$$ is to be taken as positive if the species B is consumed in a cathodic reaction or produced in an anodic reaction. Otherwise it is to be taken as negative. With the convention that the normal distance vector points into the electrolytic solution, a cathodic current is then negative, an anodic current positive.
Source:
PAC, 1981, 53, 1827. (Nomenclature for transport phenomena in electrolytic systems) on page 1835 [Terms] [Paper]