Charge-discharge behavior of graphite negative electrodes in bis(fluorosulfonyl)imide-based ionic liquid and structural aspects of their electrode/electrolyte interfaces

- The charge-discharge behavior of several graphite negative electrodes in an FSI-based ionic liquid electrolyte was evaluated.
- Not a solid electrolyte interface but a double layer-based protective interface realizes high-performance of a graphite electrode.
- Structural dependence of graphite on the charge-discharge characteristics was clarified by using model carbon electrodes.