Fig. 8
From: Anion engineering in lithium cobalt oxide for application in high-performance supercapacitors

(a) The electrochemical capacitance of LiCoO1.6(F0.8Cl0.2)0.4 and LCO at 1 A g−1. (b) The rate performance of LiCoO1.6(F0.8Cl0.2)0.4 and LCO at various discharge current densities. (c) The discharge specific capacitance and coulombic efficiency of LiCoO1.6(F0.8Cl0.2)0.4 electrode (4000 cycles) at 2 A g−1. (d) The charge–discharge profiles of LiCoO1.6(F0.8Cl0.2)0.4 at 2 A g−1.