Fig. 3: The mechanism of the redox reaction between CaZn3.6VO and O2. | Nature Communications

Fig. 3: The mechanism of the redox reaction between CaZn3.6VO and O2.

From: A chemically self-charging aqueous zinc-ion battery

Fig. 3

a Energy level transition diagram of CaZn3.6VO and O2. b Optical image of the designed galvanic cell. c V 2p XPS spectra of the CaVO electrodes at different states and the CaZn3.6VO electrodes after being oxidized by O2 in 4 M Zn (CF3SO3)2 solution for different times. d Comparison of XPS spectra of V 2p before and after oxidation. e XRD patterns and f calculational interlayer spacing of (002) plane of CaZn3.6VO electrodes after being oxidized by O2 for different times.

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