Optimization of Nb2O5/g-C3N4/PPy as an electrode material for prevailing electrochemical performance

被引：0

作者：

Manisha ^{[1
]}

Qaeemy, M. Taqi ^{[1
]}

Dhanda, Monika ^{[2
]}

Lata, Suman ^{[2
]}

Kumar, Harish ^{[3
]}

Sharma, Anshu ^{[4
]}

机构：

[1] Department of Physics and Astrophysics, School of Basic Sciences, Central University of Haryana, Mahendragarh

[2] Department of Chemistry, Deenbandhu Chhotu Ram University of Science and Technology, Haryana, Murthal

[3] Department of Chemistry, School of Basic Sciences, Central University of Haryana, Mahendragarh

[4] Department of Applied Sciences and Humanities, School of Engineering and Technology, Central University of Haryana, Mahendragarh

来源：

Frontiers in Energy Research | 2025年 / 13卷

基金：

新加坡国家研究基金会;

关键词：

polymer composite; power/energy density; specific capacitance; specific surface area; supercapacitors; ternary composite; three-electrode setup;

D O I：

10.3389/fenrg.2025.1511271

中图分类号：

学科分类号：

摘要：

The use of a ternary composite employing carbon material, polymer and metal oxide can effectively increase the performance of an electrode material used in Supercapacitors. Herein, we have facilely synthesized ternary composites of Nb2O5/g-C3N4/PPy (NGP) via in-situ polymerization reaction by systematically varying the amount of niobium pentoxide. The structural and morphological analysis of samples were examined through XRD, TGA, FESEM and BET, confirming a specific surface area of 68.936 m2/g for NGP composite. Nb2O5 nanoparticles prevent the restacking of g-C3N4 sheets and PPy form a spongy globular morphology around this structure resulting in enhanced electrochemical performance. Electrochemical assessments of the optimized composite, including CV, GCD, and EIS, revealed a specific capacitance of 1,290.15 F/g at 2 mV/s in 1 M H2SO4, with an energy density of 75.25 W h/kg at a power density of 450.01 W/kg, demonstrating the efficacy of the ternary composite strategy in advancing supercapacitor electrode properties. After 5000 CV cycles and 1000 GCD cycles, the electrode retained a specific capacitance of 95% and 91% of its initial value, respectively. Copyright © 2025 Manisha, Qaeemy, Dhanda, Lata, Kumar and Sharma.

引用

共 43 条

[41]

Vandana M., Veeresh S., Ganesh H., Nagaraju Y.S., Vijeth H., Basappa M., Et al., Graphene oxide decorated SnO2 quantum dots/polypyrrole ternary composites towards symmetric supercapacitor application, J. Energy Storage, 46, January, (2022)

[42]

Vicentini R., Nunes W., Freitas B.G.A., Da L.M., Marcelo D., Cesar R., Et al., Niobium pentoxide nanoparticles @ multi-walled carbon nanotubes and activated carbon composite material as electrodes for electrochemical capacitors, Energy Storage Mater, 22, August, pp. 311-322, (2019)

[43]

Zhang X., Wang J., Liu J., Wu J., Chen H., Bi H., Design and preparation of a ternary composite of graphene oxide/carbon dots/polypyrrole for supercapacitor application: importance and unique role of carbon dots, Carbon, 115, pp. 134-146, (2017)

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