fig3
Figure 3. (A) Working mechanism of AZIB; (B) The graph depicts the anodic and cathodic reactions of the AZIB separately; (C) Zn 2p core level spectra and XRD patterns of cathodic crystalline α-MnO2; This figure is reprinted (adapted) with permission from Xu et al. Copyright (2012) John/Wiley & Sons, Inc[64]. (D) XRD pattern of birnessite δ-MnO2. This figure is reprinted (adapted) with permission from Alfaruqi et al. Copyright (2015) Elsevier Inc[68].
