New layered metal oxides as positive electrode materials for room-temperature sodium-ion batteries
*
Mu Lin-Qin, Hu Yong-Sheng†
, Chen Li-Quan
XRD pattern of as-synthesized Na
0.9
Cu
1/4
Fe
1/4
Mn
1/4
Ti
1/4
O
2
sample and the standard JCPDS of α -NaFeO
2
.