fig6
From: Ionic liquids and their derivatives for lithium batteries: role, design strategy, and perspectives
Figure 6. (A) The evolution of the discharge specific capacity and Coulombic efficiency (CE) during long-term cycling of the cells at C/3 charge and 1C discharge after two formation cycles at C/10. XPS detail spectra in the C 1s, F 1s, and N 1s regions for the lithium cycled in (B) Li[FSI]/[EMI][FSI] (FE) and in (C) Li[FSI]/[EMI][FSI]/dFBn (FEdF) and for cathodes in (D) FE and (E) FEdF. This figure is reprinted (adapted) with permission from Liu et al.[82]. Copyright (2022) The Authors. Advanced Energy Materials published by Wiley-VCH GmbH.
