Synthesis and characterizations of MnO2/CNT nanocomposite for usage as electrodes in high-performance supercapacitor
Taking into account the unique characteristics of MnO2 (manganese oxide) nanoparticles and their exceptional physicochemical properties, which make them useful in energy storage devices like supercapacitors, this article has focused the synthesis and characterizations of MWCNT/MnO2 nanocomposites wi...
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| Language: | English |
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Elsevier
2025-03-01
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| Series: | Nano Trends |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666978124000370 |
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| author | Garima Srivastava Ravina Saurabh Dalela Nitin Kumar Gautam Shalendra Kumar S.Z. Hashmi M. Ayaz Ahmad A.M. Quraishi Virat Khanna P.A. Alvi |
| author_facet | Garima Srivastava Ravina Saurabh Dalela Nitin Kumar Gautam Shalendra Kumar S.Z. Hashmi M. Ayaz Ahmad A.M. Quraishi Virat Khanna P.A. Alvi |
| author_sort | Garima Srivastava |
| collection | DOAJ |
| description | Taking into account the unique characteristics of MnO2 (manganese oxide) nanoparticles and their exceptional physicochemical properties, which make them useful in energy storage devices like supercapacitors, this article has focused the synthesis and characterizations of MWCNT/MnO2 nanocomposites with different wt. % of MWCNTs. In the present article, the hydrothermal method was used to create MWCNT/MnO2 nanocomposites. The information regarding structure, Raman bands, functional groups, optical bandgap, and surface characteristics was obtained using an XRD tool, a Raman spectrometer, an FTIR spectrometer, a UV–Vis-NIR spectrometer, and a FE-SEM with EDX, in that order. Moreover, the electrochemical characteristics have been examined using galvanic charge-discharge (GCD), cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). Using XRD, the structural characteristics were retrieved and rejected the possibility of any secondary phases with the determined crystallite size of 22 nm for 1wt.% MWCNT/MnO2 nanocomposite. Additionally, the material underwent Raman tests indicating all the vibrational modes of MWCNT/MnO2 nanocomposite including -COOH, -OH, -C-O, -C=C and Mn-O respectively. From CV, the specific capacitance was found highest for 1wt.% MWCNT/MnO2 nanocomposite ∼729.8F/g at 5mV/s scan rate and from GCD graph it was ∼ 405.5 F/g. EIS spectra confirmed Rs and Rct values for 1wt.% MWCNT/MnO2 nanocomposite ∼ 5.57Ω and 15.60Ω, respectively. Thus, keeping in view the above results, the MnO2/CNT nanocomposites can be utilized as an anode material for energy storage applications. |
| format | Article |
| id | doaj-art-2034b08999dc44c4ab883cb96d8553ad |
| institution | OA Journals |
| issn | 2666-9781 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Nano Trends |
| spelling | doaj-art-2034b08999dc44c4ab883cb96d8553ad2025-08-20T02:06:46ZengElsevierNano Trends2666-97812025-03-01910006710.1016/j.nwnano.2024.100067Synthesis and characterizations of MnO2/CNT nanocomposite for usage as electrodes in high-performance supercapacitorGarima Srivastava0 Ravina1Saurabh Dalela2Nitin Kumar Gautam3Shalendra Kumar4S.Z. Hashmi5M. Ayaz Ahmad6A.M. Quraishi7Virat Khanna8P.A. Alvi9Department of Physical Sciences, Banasthali Vidyapith, 304022, Rajasthan, IndiaDepartment of Physical Sciences, Banasthali Vidyapith, 304022, Rajasthan, IndiaDepartment of Pure & Applied Physics, University of Kota, Kota, Rajasthan, IndiaDepartment of Physics, University of Petroleum & Energy Studies, Dehradun, IndiaDepartment of Physics, University of Petroleum & Energy Studies, Dehradun, India; Corresponding authors.Department of Chemistry, Banasthali Vidyapith, 304022, Rajasthan, IndiaDepartment of Mathematics, Physics and Statistics, Faculty of Natural Sciences, University of Guyana, P.O. Box 101110, Georgetown, GuyanaDepartment of Electrical Engineering, College of Engineering, Qassim University, Buraydah, 51452, Saudi ArabiaUniversity Centre for Research & Development, Chandigarh University, Mohali, Punjab, 140413, IndiaDepartment of Physical Sciences, Banasthali Vidyapith, 304022, Rajasthan, India; Corresponding authors.Taking into account the unique characteristics of MnO2 (manganese oxide) nanoparticles and their exceptional physicochemical properties, which make them useful in energy storage devices like supercapacitors, this article has focused the synthesis and characterizations of MWCNT/MnO2 nanocomposites with different wt. % of MWCNTs. In the present article, the hydrothermal method was used to create MWCNT/MnO2 nanocomposites. The information regarding structure, Raman bands, functional groups, optical bandgap, and surface characteristics was obtained using an XRD tool, a Raman spectrometer, an FTIR spectrometer, a UV–Vis-NIR spectrometer, and a FE-SEM with EDX, in that order. Moreover, the electrochemical characteristics have been examined using galvanic charge-discharge (GCD), cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). Using XRD, the structural characteristics were retrieved and rejected the possibility of any secondary phases with the determined crystallite size of 22 nm for 1wt.% MWCNT/MnO2 nanocomposite. Additionally, the material underwent Raman tests indicating all the vibrational modes of MWCNT/MnO2 nanocomposite including -COOH, -OH, -C-O, -C=C and Mn-O respectively. From CV, the specific capacitance was found highest for 1wt.% MWCNT/MnO2 nanocomposite ∼729.8F/g at 5mV/s scan rate and from GCD graph it was ∼ 405.5 F/g. EIS spectra confirmed Rs and Rct values for 1wt.% MWCNT/MnO2 nanocomposite ∼ 5.57Ω and 15.60Ω, respectively. Thus, keeping in view the above results, the MnO2/CNT nanocomposites can be utilized as an anode material for energy storage applications.http://www.sciencedirect.com/science/article/pii/S2666978124000370SupercapacitorsNanocompositesElectrochemicalFE-SEMXRDMWCNTS |
| spellingShingle | Garima Srivastava Ravina Saurabh Dalela Nitin Kumar Gautam Shalendra Kumar S.Z. Hashmi M. Ayaz Ahmad A.M. Quraishi Virat Khanna P.A. Alvi Synthesis and characterizations of MnO2/CNT nanocomposite for usage as electrodes in high-performance supercapacitor Nano Trends Supercapacitors Nanocomposites Electrochemical FE-SEM XRD MWCNTS |
| title | Synthesis and characterizations of MnO2/CNT nanocomposite for usage as electrodes in high-performance supercapacitor |
| title_full | Synthesis and characterizations of MnO2/CNT nanocomposite for usage as electrodes in high-performance supercapacitor |
| title_fullStr | Synthesis and characterizations of MnO2/CNT nanocomposite for usage as electrodes in high-performance supercapacitor |
| title_full_unstemmed | Synthesis and characterizations of MnO2/CNT nanocomposite for usage as electrodes in high-performance supercapacitor |
| title_short | Synthesis and characterizations of MnO2/CNT nanocomposite for usage as electrodes in high-performance supercapacitor |
| title_sort | synthesis and characterizations of mno2 cnt nanocomposite for usage as electrodes in high performance supercapacitor |
| topic | Supercapacitors Nanocomposites Electrochemical FE-SEM XRD MWCNTS |
| url | http://www.sciencedirect.com/science/article/pii/S2666978124000370 |
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