Functionalization of carbon nanoshells and its influence on the characteristics of supercapacitors

Authors

  • Алексей Владимирович Сосунов (Alexei V. Sosunov) Perm State University
  • Оксана Рифовна Семенова (Oksana R. Semenova) Perm State University
  • Гамини Суманасекера (Gamini U. Sumanasekera) University of Louisville, KY

DOI:

https://doi.org/10.17072/1994-3598-2020-2-57-64

Keywords:

суперконденсатор, углеродные нанооболочки, функционализация, электрохимические характеристики, удельная емкость, псевдоемкость

Abstract

In this work, we studied the electrochemical characteristics of carbon nanoshells functionalized in a fluorine radio-frequency plasma. During functionalization, the concentration of attached fluorine heteroatoms on the surface of carbon nanoshells increases. The specific capacitance of supercapacitors increases at 20% after small fluorination (CFx, x=0.05) of materials compared to pristine samples (130 F/g at a current density of 1 A/g with 3% degradation after 1000 charge/discharge cycles) due to pseudocapacitance. However, increase in the fluorination time of materials lead to pore blocking with a corresponding decrease in the capacitive properties of supercapacitors to 30 F/g after 30 hours.

Author Biographies

Алексей Владимирович Сосунов (Alexei V. Sosunov), Perm State University

инженер кафедры нанотехнологий и микросистемной техники

Оксана Рифовна Семенова (Oksana R. Semenova), Perm State University

доцент кафедры нанотехнологий и микросистемной техники

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Published

2020-07-13

How to Cite

Сосунов (Alexei V. Sosunov) А. В., Семенова (Oksana R. Semenova) О. Р., & Суманасекера (Gamini U. Sumanasekera) Г. (2020). Functionalization of carbon nanoshells and its influence on the characteristics of supercapacitors. Bulletin of Perm University. Physics, (2). https://doi.org/10.17072/1994-3598-2020-2-57-64

Issue

Section

Regular articles