Facile preparation of peanut-shaped cobalt-doped zinc manganese oxide as a cathode for zinc-ion battery

The peanut-shaped cobalt (Co)-doped zinc manganese oxide (ZMO: ZnMn 2 O 4 ) was successfully synthesized via a simple solvothermal and calcination process. The effects of Co-doping concentration on the structural and electrochemical properties of the samples were examined. The novel porous Zn 1 − x Co x Mn 2 O 4 materials with different molar fractions relative to Zn (where x = 0, 0.15, 0.3, and 0.45) were characterized by X-ray diffraction (XRD), Fourier transform infrared (FT-IR) spectroscopy, ultraviolet–visible–near infrared (UV–Vis–NIR) spectroscopy, field emission scanning electron microscopy (FESEM), energy dispersive X-ray spectroscopy (EDS), and nitrogen (N 2 ) adsorption–desorption isotherms. The results demonstrated that the incorporation of Co into the ZnMn 2 O 4 lattice did not