fig2
From: Tailoring hard carbon interfaces in carbonate-based electrolytes for sodium-ion hybrid capacitors
Figure 2. Electrochemical performance tests. (A) CV plots of HC125@Co3O4, (B) rate capability, and (C) cycling performance of HC, HC125@Co3O4 and Co3O4 samples. (D) pseudocapacitive contribution. (E) CV plots for the first cycle, (F) the relationship of lgi vs. lgv (A1), and (G) cycling stability at 2 A g-1 of HC and HC125@Co3O4 electrode.
