Nanosized Na4Fe(CN)6/C Composite as a Low‐Cost and High‐Rate Cathode Material for Sodium‐Ion Batteries
A Na4Fe(CN)6/C nanocomposite prepared simply by ball-milling Na4Fe(CN)6 with carbon powder displays a full utilization of its one-electron redox capacity, excellent cyclability, and high rate capability as a Na-storage cathode, offering a promising possibility to develop environmentally benign and low-cost Na ion batteries for large-scale electric storage applications.