NaFe0.5Mn0.5PO4–Ge electrochemical system for sodium-ion batteries

A new electrochemical system for sodium-ion batteries, sodium iron-manganese phosphate–germanium nanowires, has been developed and tested. The laboratory batteries possessed an average discharge voltage of ∼2.0 V and an energy density based on the weight of active materials to 210 Wh kg –1 .