Fig. 23. SECM HER image recorded from pristine Mg across to the Mg coated with a Mg(OH)2 surface. A normalization of microelectrode currents with respect to the average current of pristine Mg was done. The microelectrode was rastered with a sweep velocity of 50 μg s−1 and the electrochemical measurements were performed at steps of 100 μm per point. Reproduced from ref. 204 with permission from Elsevier © 2015.
