Fig. 6: Galvanostatic cycling at increasing rate.

Rate test at 55 °C for Prussian white – Hard carbon full cells using 0.35 M NaBOB–TEP + 3 wt% PES (orange triangles) and 1 M NaPF₆ in EC:DEC (black triangles) electrolytes, respectively. Specific capacity (a) and coulombic efficiency (b).