cm1c03173_si_001.pdf (1.19 MB)
Electrochemical Formation of a Covalent–Ionic Stage‑1 Graphite Intercalation Compound with Trifluoroacetic Acid
journal contribution
posted on 2021-12-27, 18:36 authored by Bartosz Gurzęda, Tae In Kim, Madi Arsakay, Myeonggi Choe, Sun Hwa Lee, Zonghoon Lee, Seung Kyu Min, Rodney S. RuoffA pure
stage-1 graphite intercalation compound (GIC) has been prepared
by the electrochemical oxidation of graphite in trifluoroacetic acid
(CF3COOH). During the CF3COOH-GIC formation,
covalent as well as ionic bonds between the trifluoroacetic acid and
graphite layers are formed. Electrochemical reduction of the stage-1
GIC leads to the deintercalation of ionically bonded intercalate,
yielding the stage-2 covalent GIC. The interlayer spacing is 8.10
Å for stage-1 and 11.62 Å for stage-2 GIC. Further electrochemical
oxidation of stage-1 CF3COOH-GIC does not lead to the exfoliation
of the GIC product, and the GIC has relatively high stability in air.