Fig. 3
From: Boosting lithium storage in covalent organic framework via activation of 14-electron redox chemistry

Electrochemical performances of the COF@CNTs anode. a Cycling performances of the COF and COF@CNTs at 100 mA g−1. b Capacity contribution of COF (based on the mass of COF) in COF@CNTs at 100 mA g−1. c Nyquist plots of the COF@CNTs after the first 200 and 500 cycles. d The enlarged Nyquist plots after the 500th cycle