fig1
![CoFe<sub>2</sub>O<sub>4</sub> nanoparticles as a bifunctional agent on activated porous carbon for battery-type asymmetrical supercapacitor](https://image.oaes.cc/1f76a2c2-e8af-456b-939d-1cb3edbdda22/cs3048.fig.1.jpg)
Figure 1. (A) The schematic illustration of magnetic carbon synthesized via the hydrothermal method; (B) N2 adsorption-desorption isotherms; (C) pore diameter distribution; (D) XRD; and (E) Roman spectrum of AC and MACs. XRD: X-ray diffractometer; AC: activated carbon; MACs: modified activated carbons.