Fig. 3: Fast-charge testing of the Cu|0.5 M CuSO4|Se@C coin cells.
From: Enabling fast-charging selenium-based aqueous batteries via conversion reaction with copper ions
a–c The fast-charging rate performance of Cu||Se@C-48 cell: charging at 10 A g−1, discharging at different currents. GITT curve and the calculated Cu2+ diffusion coefficients during (d) discharging and (e) charging processes of Cu||Se@C-78 cell.
