Effect of Ni/Fe/Mn ratio on electrochemical properties of the O3–NaNi1-x-yFexMnyO2 (0.25 ≤ x,y ≤ 0.75) cathode materials for Na-ion batteries

Vitalii A. Shevchenko, Alena I. Komayko, Elizaveta V. Sivenkova, Ruslan R. Samigullin, Irina Skvortsova, Artem M. Abakumov, Victoria A. Nikitina, Oleg A. Drozhzhin, Evgeny V. Antipov