Aluminum electrolytic capacitor C when the cathode capacitance C is very large compared with the anode capacitance C. This requirement is given when the cathode capacitance C is approximately 10 times higher than the anode capacitance C. This can be easily achieved because the natural oxide layer on a cathode surface has a voltage proof of approximately 1.5 V and is therefore very thin. Although the present article only refers in essence to aluminum electrolytic capacitors with non-solid electrolyte, an overview of the different types of aluminum electrolytic capacitors is given here in order to highlight the differences. Aluminum electrolytic capacitors are divided
Standard electrode potential is sufficient to calculate either one of the potentials. Therefore, standard electrode potential is commonly written as standard reduction potential. The electrode potential cannot be obtained empirically. The galvanic cell potential results from a "pair" of electrodes. Thus, only one empirical value is available in a pair of electrodes and it is not possible to determine the value for each electrode in the pair using the empirically obtained galvanic cell potential. A reference electrode, standard hydrogen electrode (SHE), for which the potential is "defined" or agreed upon by convention, needed to be established. In this case SHE is set to