Fig. 4: In situ UV-Vis spectra for tracking the electrodeposition process of the CoOxCly and CoOx film on FTO.
From: Self-adaptive amorphous CoOxCly electrocatalyst for sustainable chlorine evolution in acidic brine
a The schematics illustrate the in situ spectroelectrochemical UV-Vis tracking of the catalyst deposition process (left). The schematic diagram for CER on the CoOxCly electrode (right). b The UV-Vis absorption spectra of the deposited CoOx film in the electrolyte containing 0.1 M Co2+ and 0.5 M ClO4- at 1.67 V. c The UV-Vis absorption spectra of the deposited CoOxCly film in the electrolyte containing 0.1 M Co2+ and 0.5 M Cl- at 1.67 V. d The UV-Vis absorption spectra of the deposited CoOxCly film upon increasing the Cl- concentration from 0.01 to 2.0 M. Inset shows the absorption spectra around the A2-A4 range for the CoOxCly electrodeposited in 0.01 M Cl- electrolyte.
