Petal-like NiS-NiO/G-C3N4 Nanocomposite for High-Performance Symmetric Supercapacitor

Amira Ben Gouider Trabelsi; Doaa Essam; Fatemah H Alkallas; Ashour M Ahmed; Mohamed Rabia

doi:10.3390/mi13122134

Petal-like NiS-NiO/G-C3N4 Nanocomposite for High-Performance Symmetric Supercapacitor

Micromachines (Basel). 2022 Dec 2;13(12):2134. doi: 10.3390/mi13122134.

Authors

Amira Ben Gouider Trabelsi¹, Doaa Essam^{2

3}, Fatemah H Alkallas¹, Ashour M Ahmed^{2

4}, Mohamed Rabia^{2

3}

Affiliations

¹ Department of Physics, College of Science, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia.
² Nanophotonics and Applications Lab, Physics Department, Faculty of Science, Beni-Suef University, Beni-Suef 62514, Egypt.
³ Nanomaterials Science Research Laboratory, Chemistry Department, Faculty of Science, Beni-Suef University, Beni-Suef 62514, Egypt.
⁴ Physics Department, College of Science, Imam Mohammad Ibn Saud Islamic University (IMSIU), Riyadh 11623, Saudi Arabia.

Abstract

Graphitic carbon nitride (G-C3N4) and NiS-NiO/G-C3N4 nanocomposite have been synthesized via combustion and hydrothermal techniques, respectively. The chemical and morphological properties of these materials were confirmed using different analytical methods. SEM confirms the formation of G-C3N4 sheets containing additional petal-like shapes of NiS-NiO nanoparticles. The electrochemical testing of NiS-NiO/G-C3N4 symmetric supercapacitors is carried out from 0.6 M HCl electrolyte. Such testing includes charge/discharge, cyclic voltammetry, impedance, and supercapacitor stability. The charge/discharge time reaches 790 s at 0.3 A/g, while the cyclic voltammetry curve forms under a high surface area. The produced specific capacitance (C_S) and energy density values are 766 F/g and 23.55 W.h.kg^-1, correspondingly.

Keywords: G-C3N4; NiO; NiS; electrolytes; porous materials; specific capacitance.

Grants and funding

PNURSP2022R223/The authors express their gratitude to Princess Nourah bint Abdulrahman University Researchers Supporting Project number (PNURSP2022R223), Princess Nourah bint Abdulrahman University, Riyadh, Saudi Arabia.