Research Article
Enhancing the Electrochemical Energy Storage Performance of Bismuth Ferrite Supercapacitor Electrodes via Simply Induced Anion Vacancies
Figure 2
(a) X-ray diffraction patterns of BiFeO3 and BiFeO3-X. Inset shows a digital photograph of each powder. (b) High-resolution Cs-TEM image of BiFeO3-X and the corresponding fast Fourier transformed image (inset). (c) Thermogravimetric analysis curves of BiFeO3 and BiFeO3-X. Orange box indicates oxygen vacancy refilling in air. X-ray photoelectron spectra of the (d) Bi 4f, (e) Fe 2p, and (f) O 1s regions. The top and bottom profiles in each spectrum correspond to BiFeO3 and BiFeO3-X, respectively.
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