Faradays Law and Current Efficiency

Electrochemical reactions are characterized by at least one electron charge transfer step taking place at the electrode or electrolyte interface, for example  

The reaction rate normalized to the electrode surface area (j4e in m ) is defined as  

The stoichiometric coefficient v is by definition negative for educts and positive for products. The number of moles of electrons, n, transferred in time t for a given current density i (Am ) can be expressed as  

For product component B, insertion of Eq. (6.19.4) into Eq. (6.19.2) and integration yields the more common form of Faraday s law  

For the masses of educt A (with molar mass Ma) and product B (molar mass Mb) we obtain  

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