Fig. 1: Physical characterizations of the electrocatalysts.
From: Electrocatalytic water oxidation with manganese phosphates
a, b SEM, c, e TEM, and d, f AFM images of KMnPO4•H2O (a, c, d) and KMnPO4 (b, e, f). g PXRD patterns of KMnPO4•H2O (top) and KMnPO4 (bottom); black lines are simulated from crystal structures. h The TGA analysis of KMnPO4•H2O. i, j The Mn 3 s and Mn 2p XPS spectra of the two catalysts.
