Structure and supercapacitor properties of few-layer low-fluorinated graphene materials

• Published in: Journal of materials science Vol. 53; no. 18; pp. 13053 - 13066
• Main Authors: Pinakov, Dmitry V., Chekhova, Galina N., Okotrub, Alexander V., Asanov, Igor P., Shubin, Yury V., Fedorovskaya, Ekaterina O., Plyusnin, Pavel E., Bulusheva, Lyubov G.
• Format: Journal Article
• Language: English
• Published: New York Springer US 01-09-2018; Springer; Springer Nature B.V
• Subjects: Analysis; Capacitance; Capacitors; Characterization and Evaluation of Materials; Chemistry and Materials Science; Classical Mechanics; Clathrate compounds; Crystallography and Scattering Methods; Electrochemical analysis; Energy Materials; Exfoliation; Fluorides; Fluorination; Fluorine; Graphene; Graphite; Gravimetry; Intercalation compounds; Materials Science; Polymer Sciences; Porous materials; Properties (attributes); Pyrolysis; Solid Mechanics; Supercapacitors; Gravimetric Capacity; Concentrated Acid Mixture; Higher Exfoliation; Fluorinated Graphite Intercalation Compounds (FGIC); Graphic Material
• ISSN: 0022-2461; 1573-4803
• DOI: 10.1007/s10853-018-2516-9

Graphene materials including porous few-layered graphenes are under focus of scientific community today. The great attention towards them is caused by their remarkable properties. Here, we use two different fluorinated graphite intercalation compounds with different fluorine content in their matrices to prepare thermally exfoliated fluorinated graphites and to investigate them in terms of their structural, spectroscopic and electrochemical properties as materials for use in supercapacitors. A higher temperature of low-fluorinated graphenes preparation resulted in higher exfoliation degree and higher gravimetric capacitance in supercapacitor appliances. More dramatic leap of gravimetric capacitance was observed after a treatment in a concentrated acid mixture of graphene material samples prepared at the highest temperature of thermolysis with highest exposition time.