Chemical and electrochemical syntheses of a graphite fluoro-tris(pentafluoroethyl)borate intercalation compound

Preparation of a Homologous Series of Tetraalkylammonium Graphite Intercalation Compounds

“…Graphite has been long studied as an intercalation host and shows some unique aspects. − Graphite intercalation compounds (GICs) consist of host graphene layers and intercalate guests; either donor or acceptor-type compounds can be prepared by reduction or oxidation of the graphene sheets, respectively. − This redox intercalation can be performed by either chemical or electrochemical methods, and a wide range of atomic or molecular ions, often accompanied by neutral cointercalate molecules, are known to act as intercalate guests. − The ordered sequencing of intercalate and graphene sheets perpendicular to the stacking direction is known as “staging” in common for GICs, , and, while known, it is rarely observed with other layered hosts . The highest intercalate contents are for stage-1 GICs, where all graphene sheets are separated by intercalate layers.…”

Hierarchical Storage Behavior of Tetrafluoroborate Anion in Graphite Electrodes

“…8,12,13 Nevertheless, other factors may also contribute to the anion storage in graphite positive electrodes. For example, Ishihara et al have stressed the morphology effect on the hexafluorophosphate storage capacity of graphitized carbon; 14 Ozmen-Monkul et al compared GICs formations from two fluorinated organic anions; 5,15 Huesker et al found the binder influence on the electrochemical intercalation of bis (trifluoromethanesulfonyl) imide (TFSI − ) anions into graphite. 16 Since the graphite electrode experiences complex changes during anionic intercalation, a comprehensive and deep understanding on this electrochemical process is difficult but necessary.…”