Fig. 4: Influence of the Guyard reaction on catalyst stability.
From: Oxygen evolution electrocatalysis resilient to voltage fluctuations
a–e, The stability of Mn oxide under voltage fluctuation (the same conditions as those used in Fig. 3) was evaluated at pH 2 with 1.0 M phosphate ions on the basis of the concentration of Mn7+ dissolved in the electrolyte (a), the mass change of the MnO2 electrode (b), the colour change of the electrolyte (c) and the current density over time (d,e).
