Reduced graphene oxide doped tellurium nanotubes for high performance supercapacitor.

Autor: Rani P; Department of Physics, School of Basic Sciences, Central University of Punjab, Bathinda, India., Alegaonkar AP; Department of Chemistry, Savitribai Phule Pune University, Pune, India., Biswas R; Department of Chemistry, School of Basic Sciences, Central University of Punjab, Bathinda, India., Jewariya Y; Department of Physics, School of Basic Sciences, Central University of Punjab, Bathinda, India., Kanta Haldar K; Department of Chemistry, School of Basic Sciences, Central University of Punjab, Bathinda, India., Alegaonkar PS; Department of Physics, School of Basic Sciences, Central University of Punjab, Bathinda, India.
Jazyk: angličtina
Zdroj: Frontiers in chemistry [Front Chem] 2022 Oct 18; Vol. 10, pp. 1027554. Date of Electronic Publication: 2022 Oct 18 (Print Publication: 2022).
DOI: 10.3389/fchem.2022.1027554
Abstrakt: Supercapacitors have been achieving great interest in energy storage systems for the past couple of decades. Such devices with superior performance, mainly, depending on the material architecture of the electrodes. We report on the preparation of Tellurium nanotubes (Te-tubes diameter ∼100 nm and length ∼700 nm), with variable doping of conducting network reduced graphene oxide (rGO) to fabricate high-performance electrode characteristics of rGO @ Te. The prepared material was characterized using XRD, FTIR, FESEM, and Raman spectroscopy techniques, including Brunauer-Emmett-Teller, Barrett-Joyner-Halenda measurements. FTIR study revealed that 15% rGO @ Te has a wide C-O vibration band at ∼ 1,100-1,300 cm -1 , over other compositions. FESEM study shows the Te-tubes dispersion in rGO layers. The EDX study revealed that 15% of the composition has an optimistic concentration of C and O elements. In other compositions, either at lower/higher rGO concentration, an uneven count of C and O is observed. These support efficient charge dynamics to achieve superior ultra-capacitor characteristics, thereby achieving specific capacitance C sp 170 + F/g @ 10 mV/s in a symmetric configuration. The reported values are thirty times higher than pristine Te-tubes (∼5 F/g). This finding suggests that rGO @ Te is a promising candidate for supercapacitor.
Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.
(Copyright © 2022 Rani, Alegaonkar, Biswas, Jewariya, Kanta Haldar and Alegaonkar.)
Databáze: MEDLINE
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