Preparation of Non-stoichiometric Titanium Dioxide/Carbon Nanofiber Electrode and Its Performance for Supercapacitor

REN Yaqi1 LÜ Yiying1 LI Xi1 WANG Rui1

(1.School of Materials and Environmental Engineering, Chengdu Technological University, Chengdu, Sichuan, China 611730)

【Abstract】An integrated non-stoichiometric titanium dioxide/carbon nanofiber electrode was prepared by electrospinning-impregnating-calcination method and used for supercapacitor. Fine TiO2 nanoparticles were anchored onto the surface of carbon nanofiber substrate with a diameter of 80–100 nm. And non-stoichiometric TiO2 nanoparticles were obtained by calcination at high temperatures in an inert atmosphere. The sample calcined at 900 °C exhibits the highest capacitance with 222.81 F/g discharge capacitance at 0.2 A/g current density and good cycle stability with 92% retention rate at 2 A/g current density after 6 000 cycles.

【Keywords】 TiO2; carbon nanofibers; non-stoichiometric; supercapacitor;

【DOI】

【Funds】 Science and Technology Project of Sichuan Province (2020YJ0392) Doctoral Fund of Chengdu Technological University (2018RC017)

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This Article

ISSN:1004-7638

CN: 51-1245/TF

Vol 41, No. 06, Pages 35-39

December 2020

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Article Outline

Abstract

  • 0 Introduction
  • 1 Experimental
  • 2 Results and discussion
  • 3 Conclusion
  • References