Its value of the M/z when the cobalt is being deposited with 100% efficiency, i.e., without any other parallel process on the surface of the electrode. If electrochemical processes occur with parallel chemical processes as for example with deposit of mass by precipitation, the ratio M/z will be higher value than theoretical. If electrochemical process occur with lower or no mass change, the experimental M/z will be lower than the theoretical value for the reaction considered.
From Fig. 2b, it was observed that experimental M/z values obtained during cobalt electrodeposition in a solution of pH5.40
moved toward a value of 32.00 gmol−1 as the deposition advanced in the cathodic direction. This result suggests that deposition is occurring in agreement with Eq. (1). Already at pH 2.70,M/z values tended toward a value of 13.00 gmol−1.