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Chemical vapour deposition synthesized novel LaFe2O3/Al2O3/Fe/CNT heterostructure for enhanced super-capacitive performance

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Abstract

LaFe2O3/Al2O3/Fe/CNT has been synthesized using chemical vapour deposition method and was investigated for its super-capacitive behavior. The electrochemical performance and super-capacitive study of the synthesized materials were performed in terms of cyclic voltammetry (CV) and galvanostatic charge discharge methods using three electrode system. As a result, we were able to enhance the cyclic voltametric potential range for the LaFe2O3/Al2O3/Fe/CNT, which shows that the electrode materials are more stable due to the greater current given by the CNT matrix. All of the CV curves have a rectangular shape, which shows that K+ ions from the electrolyte solution are what are adsorbing the charge. However, a pair of large redox peaks with a narrow current range were seen in the LaFe2O3/Al2O3/Fe/CNT, suggesting the presence of iron in the redox reaction. This was possible to see because the CNT matrix’s matrix quickly transferred electrons, which raised current. The primary charge storage is caused by K+ ion adsorption at the electrode/electrolyte contact. LaFe2O3/Al2O3/Fe/CNT was observed to be most efficient supercapacitor with the calculated specific capacitance and capacity retention of 600 F/g at 1 A/g and 106% for 5000 cycles.

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Funding

Authors wants to appreciate Uttaranchal University for providing funding under seed money project scheme. Authors are also thankful to National Physical Laboratory (NPL), New Delhi and Materials Research Centre (MRC), Malaviya National Institute of Technology (MNIT), Jaipur for providing the compositional characterizations.

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Authors and Affiliations

  1. Department of Physics, Rajdhani College, University of Delhi, Delhi, 110015, India

    Vikas N. Thakur

  2. Division of Research & Innovation, Uttaranchal University, Dehradun, 248007, India

    Vikas N. Thakur, S. Chetana & Naveen C. Joshi

  3. Department of Mechanical engineering, ATME college of engineering, Mysore, Karnataka, 570010, India

    S. Chetana

  4. Section of Chemistry for Technologies (ChemTech), Department of Industrial Engineering, University of Padova, Via Marzolo 9, 35131, Padua, PD, Italy

    V. Gajraj

  5. Department of Electronics and Communication Engineering, Graphic Era Deemed to be University, Dehradun, 248002, India

    Niraj Kumar

  6. AMC Engineering College, Bangalore, Karnataka, 560083, India

    K. G. Basavakumar

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Contributions

VNT: Conceptualization, Methodology, Data curation, Writing—original draft, Visualization. CS: Conceptualization, Methodology, Data curation, Formal analysis. VG: Formal analysis, Writing—review & editing. NK: Data analysis and reviewing. NCJ: Data analysis and reviewing. KGB: Conceptualization, Methodology, Investigation, Resources, Writing—review & editing.

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Thakur, V.N., Chetana, S., Gajraj, V. et al. Chemical vapour deposition synthesized novel LaFe2O3/Al2O3/Fe/CNT heterostructure for enhanced super-capacitive performance. J Mater Sci: Mater Electron 34, 2314 (2023). https://doi.org/10.1007/s10854-023-11723-w

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