fig3
From: Electronic modification of NaCrO2via Ni2+ substitution as efficient cathode for sodium-ion batteries
Figure 3. (A) The charge/discharge profiles of CR2032 type coin cells assembled with the prepared the NCO and NCNO-0.05 samples as the working electrode and Na metal as the counter electrode. The charge/discharge rate is 0.2 C. (B) The rate behaviors of CR2032 type coin cells. (C) The cyclic voltammogram curves of the NCO and the NCNO-0.05 electrodes at the first cycle at a scan rate of
