fig1
![A bimetallic-activated MnO<sub>2</sub> self-assembly electrode with a dual heterojunction structure for high-performance rechargeable zinc-air batteries](https://image.oaes.cc/54d48648-99b4-4bf2-9535-8934dd849419/4947.fig.1.jpg)
Figure 1. (A) Schematic of NiCo2O4@MnO2/CNTs-Ni foam synthesis. (B) Scanning electron microscope (SEM) image of NiCo2O4@MnO2/CNTs-Ni foam. (C) Transmission electron microscope (TEM) image of NiCo2O4@MnO2/CNTs-Ni foam. (D) and (E) High-resolution transmission electron microscopy (HRTEM) images of NiCo2O4@MnO2/CNTs-Ni foam. (F) Selected area electron diffraction (SAED) image of NiCo2O4@MnO2/CNTs-Ni foam. (G) Elemental (Co, Ni, Mn and O) mapping of the area within the red dotted box in Figure 1C.