Co–Mn spinel supported self-catalysis induced N-doped carbon nanotubes with high efficiency electron transport channels for zinc–air batteries

The optimized CoMn₂O₄/NCNTs@Ni with high valence Mn^3.4+ as the catalytic site center, combined with the spinel-NCNTs-Ni electron transport channels jointly promote the electrocatalytic activity and successfully applied in zinc–air battery.