High capacity sodium-rich layered oxide cathode for sodium-ion batteries
Guo Gen-Cai, Wang Changhao, Ming Bang-Ming, Luo Si-Wei, Su Heng, Wang Bo-Ya, Zhang Ming, Yu Hai-Jun †, Wang Ru-Zhi ‡
       

(color online) Densities of states of (a) Na2MnO3, (b) Na1.75MnO3, (c) Na1.5MnO3, (d) Na1.25MnO3, and (e) Na1MnO3, respectively. The black, blue, and red lines represent the total densities of states of NaxMnO3, partial density of states of Mn-d, and partial density of state of O-p, respectively. The dashed line in the middle represents the Fermi level.