1 research outputs found
Exfoliation Mechanism of Graphite Cathode in Ionic Liquids
Graphene
has been successfully electrochemically exfoliated by electrolysis
of cathode graphite in the aluminum-ion battery with ionic liquid
electrolyte comprising AlCl<sub>3</sub> and 1-ethyl-3-methylimidazolium
chloride ([EMIm]ΒCl). The AlCl<sub>4</sub><sup>β</sup>, Al<sub>2</sub>Cl<sub>7</sub><sup>β</sup>, etc., intercalation into
graphite flakes in ionic liquid of the aluminum-ion battery by different
electrolysis processes to exfoliate graphite has been researched in
detail. As a result of the enhanced structural flexibility, the intercalant
gallery height increases in the less than five-layer graphene film,
providing more free space for AlCl<sub>4</sub><sup>β</sup>,
Al<sub>2</sub>Cl<sub>7</sub><sup>β</sup>, etc. transport. Therefore,
a quantity of 3β5 layers rather than 1β2 layers of graphene
can be obtained. The results clearly demonstrate that graphene has
been produced in the graphite cathode in <b>AlCl</b><sub><b>3</b></sub><b>/EMImCl</b> ionic liquids, which is significantly
meaningful for accelerating the theoretical research and industrialized
application of graphene. Meanwhile, it has a vitally important role
for promoting the recycling Al-ion batteries