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- Title
Study on preparation of few layers graphene in the C<sub>2</sub>H<sub>4</sub>O<sub>3</sub>-based system under the assist of microwave irradiation and its capacitive performance.
- Authors
Yu, M.; Zhu, Y. R.; Lin, R. P.; Ding, Y. H.
- Abstract
Large-area few-layer graphene was prepared by intercalation of flake graphite with C2H4O3 + H2O2 mixed solution, combined with microwave peeling method and ultrasonic dispersion technology. The prepared few-layer graphene was analyzed and characterized by XRD, SEM, Raman, TEM, FT-IR, BET, and electrochemical tests. The mechanism of "Intercalation–Exfoliation–Dispersion" was proposed, and the capacitive performance of the species was tested. The results show that a C2H4O3 + H2O2 mixing solution can deprive the electrons at the edge of the graphite layer, increasing the graphite sheet spacing. After intercalating and microwave-irradiating twice, the number of graphene layers is between 5 and 8, transparent tulle-like, with a fold-shaped appearance, and contains a small number of oxidizing groups. These species have a high specific capacitance of 629 F/g at a current density of 1 A/g and good rate performance. Unlike the traditional oxidative stripping process, no waste acid is generated in the preparation process, which reduces environmental pollution and costs.
- Subjects
GRAPHENE; MICROWAVES; POLLUTION; GRAPHITE; IRRADIATION; OXYGEN; GRAPHITE intercalation compounds
- Publication
Journal of Materials Science: Materials in Electronics, 2022, Vol 33, Issue 12, p9785
- ISSN
0957-4522
- Publication type
Article
- DOI
10.1007/s10854-022-07933-3