High‐power and low‐cost sodium‐ion batteries with a wide …
And a high energy density of 119 Wh/kg is obtained at a power density of 153 W/kg. To investigate the practical application potential, we assembled the NG//NFPP battery with a high mass loading of 16 mg NFPP /cm and 9 mg NG /cm. At a current density of 200 mA/g, the high mass loaded NG//NFPP battery exhibits a long lifespan for 250 cycles with ...