Figure 9.
![(a) Charge–discharge profiles during initial cycling (the cycle 1 is shown by a dotted line and cycle 2 by a solid line), (b) cycling performance of graphite/PVdF electrodes, hard X-ray photoelectron spectroscopy spectra of (c) C 1s and (d) N 1s regions for graphite/PVdF electrodes after 1 cycle in cells containing K[FSA]/EC:DEC or K[FSA]/[C3C1pyrr][FSA] where N-methyl-N-propylpyrrolidinium is abbreviated as [C3C1pyrr]. Reproduced from Ref. 35 with permission. Copyright, 2020 American Chemical Society.](https://oup.silverchair-cdn.com/oup/backfile/Content_public/Journal/bcsj/95/4/10.1246_bcsj.20210412/3/20210412fig09rgb.jpeg?Expires=1749767284&Signature=s9TTJ~nusp2zj9rUQW3-RlZuQomnqpUYJKuXgoaZlWzinS4wsHWWQJceWV9eyVadUh4-bmW5qNh~Tfq9~IuAGM2zkiY8YoRZp537sf8T1gQoycuXA5FInpYjiOkSj7bSItvHrgWWVlPHwwuoUt9BCHIfpqqMENhHDfDGHRSS28v4VnBbk5kpWReWsjDY7j7pPpveDkHyZ~hH~HY0bqrbrOC80oqGIi7RrzeZpe7SHH~mIQZvBQ2mhI~mw28W2wJ5sgRFya8A-dheCG~urZVTELiIWBQIfwyeEsgGevXrwPXwY3WlAtPPsrn0v0FVENUrlOZJdptbtrfc7cc9Vz6XXA__&Key-Pair-Id=APKAIE5G5CRDK6RD3PGA)
(a) Charge–discharge profiles during initial cycling (the cycle 1 is shown by a dotted line and cycle 2 by a solid line), (b) cycling performance of graphite/PVdF electrodes, hard X-ray photoelectron spectroscopy spectra of (c) C 1s and (d) N 1s regions for graphite/PVdF electrodes after 1 cycle in cells containing K[FSA]/EC:DEC or K[FSA]/[C3C1pyrr][FSA] where N-methyl-N-propylpyrrolidinium is abbreviated as [C3C1pyrr]. Reproduced from Ref. 35 with permission. Copyright, 2020 American Chemical Society.
