Fig. 1: The CER performance of amorphous CoOxCly catalysts.
From: Self-adaptive amorphous CoOxCly electrocatalyst for sustainable chlorine evolution in acidic brine
a The LSV curve of CoOxCly and CoOx catalysts in 0.5 M NaCl and NaClO4 at pH 2, respectively. The CoOxCly and CoOx catalysts were obtained after 2 h electrodeposition at 1.67 V in the electrolyte containing 0.1 M Co2+ and 0.5 M Cl- or 0.5 M ClO- at pH 2, respectively. 1.67 V was selected based on the CER onset potential of the first potential scan. b The overpotential trend at 10 mA cm−2 with increasing the electrodeposition time from the first potential scan to 500 h at 1.67 V in the electrolyte containing 0.1 M Co2+ and 0.5 M Cl- at pH 2. The overpotential was iR corrected with 90% ohmic resistance. The electrolyte resistance was 46.0 Ω. c The Cl2 selectivity of CoOxCly catalyst under different Cl- concentrations and anodic potentials during the deposition process at pH 2. The data were recorded based on a rotating disk electrode method at 1600 RPM. The error bars represent the standard deviation for triplicate measurements. d The LSV curves and corresponding DEMS signals during CER at pH 2 at 10 mV s−1. e The performance comparison between different CER catalysts (the detailed data were summarized in Supplementary Table 1).
