The intercalation/de-intercalation behavior of the bis(fluorosulfonyl)amide anion (FSA anion) at a highly oriented pyrolytic graphite (HOPG) electrode in an carbonate-based electrolyte solution was investigated. Raman spectroscopy and X-ray diffraction measurements were used to verify the formation of a stage-1 FSA-graphite intercalation compound, which had a gallery height of 0.78 nm. The HOPG showed approximately 60 mA h g−1 of reversible capacity in a LiFSA carbonate-based electrolyte. The difference between the FSA anion and bis(trifluoromethanesulfonyl)amide (TFSA) anion was also discussed.
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Fukutsuka et al. (2015) studied this question.
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