fig4

Figure 4. (A, B) TEM and (C) HRTEM images with d-spacing of 0.28 nm, indicating (220) plane, and (D) SAED pattern of MCO nanochains. (E) Cyclic voltammetry (CV) of MCO, Co₃O₄ and Mn₂O₃ synthesized by similar approach versus Mn₂O₃ and commercial noble electrocatalysts in a 1 M KOH solution with a scan rate of 20 mV s^-1 on FTO substrates (loading of ~1 mg). (F) Near-surface structural reorganization of MCO at the onset and the elevated oxygen evolution potential. Reproduced with permission. Copyright 2017, Royal Society of Chemistry^[73].