Fig. 7
From: Anion engineering in lithium cobalt oxide for application in high-performance supercapacitors

The initial charge–discharge curves of the LiCoO1.6(F0.8Cl0.2)0.4 (a), and LiCoO2 (b) at 1 A g−1, the charge–discharge curves of LiCoO1.6(F0.8Cl0.2)0.4 (c), and LiCoO2 (d) at distinct current densities. The discharge curves of LiCoO1.6(F0.8Cl0.2)0.4 at distinct current densities (e). The energy density and power density as a Ragone plot for the LiCoO1.6(F0.8Cl0.2)0.4 electrode (f).