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Figure 10. (A) (a) Zoom-in HAADF-STEM image of the Co-SA/NC catalyst; (b) K-edge FT-EXAFS in R space for related samples; (c) Initial deep GCD curves of related samples^[184]. Copyright 2020, Springer Nature. (B) (a) HAADF-STEM images of Ru_NC/Co_SA-3DNG; Fourier-transform EXAFS spectra for (b) Ru K-edge; (c) Initial discharge-charge profiles (voltage: 2.0-4.5 V, current density: 1,000 mA g^-1) of different electrodes^[186]. Copyright 2021, the Royal Society of Chemistry.