On the influence of cosurfactant in the synthesis of surface- modified Na2/3Ni1/3Mn2/3O2 as cathode for sodium-ion batteries

2030-12 The electrochemical performance of two Na2/3Ni1/3Mn2/3O2 samples, prepared by an oleic - assisted emulsion procedure, is examined. As a novelty, the effect of cosurfactants with either short (methylamine) or long (octylamine) chains is determined for their applicability as cathode materials for sodium-ion batteries. Their structural and morphological properties are studied by X-ray diffraction and electron microscopy. The electrochemical performance is determined by cycling sodium half cells by the galvanostatic method. Especial interest is devoted to their kinetic properties evaluated by impedance spectroscopy