图1 a) TEM image showing the hybrid CoFeO@BP nanosheet. b) High magnification TEM image showing the surface of CoFeO@BP nanosheet, inset is the SAED pattern. c) AFM image of CoFeO@BP nanosheet. d) HAADF-STEM image of CoFeO@BP nanosheet. e) HAADF-STEM image (left) and the corresponding EDX elemental mapping of O, P, Co, and Fe.
图2. a) HER LSV curves of CoFeO@BP, pure BP and commercial Pt/C recorded in 1 M KOH (iR-corrected) . b) The corresponding Tafel plots. c) OER LSV curves of CoFeO@BP, pure BP and RuO2 recorded in 1 M KOH (iR-corrected). d) The corresponding Tafel plots. e) Overall water splitting performance of CoFeO@BP and commercial Pt/C-RuO2. f) Stability test of CoFeO@BP. Inset is a photograph showing bubble formation from both electrodes during electrolysis.