fig13
![Bifunctional 2D structured catalysts for air electrodes in rechargeable metal-air batteries](https://image.oaes.cc/b3caed8e-b760-4708-88f9-4496d684cb33/em3066.fig.13.jpg)
Figure 13. (A) (a) Working principle of CMT@MXene bifunctional electrocatalyst with an electron hopping mechanism; (b) SEM image of CMT@MXene; (c) Charge-discharge profiles of samples[206]. Copyright 2023, Wiley-VCH. (B) (a) Molecular structures of Ni-TAPP-Co; (b) Top view of Ni-TAPP-Co; (c) SEM image of Ni-TAPP-Co; (d) Galvanostatic profiles for samples[207]. Copyright 2023, the American Association for the Advancement of Science.