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Enhanced electrochemical performance of graphene/La2BMnO6/PPy composites for supercapacitor applications.

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Title: Enhanced electrochemical performance of graphene/La2BMnO6/PPy composites for supercapacitor applications.
Authors: Kumar, Amod1 (AUTHOR), Das, Tupan1 (AUTHOR), Dev, Amar1 (AUTHOR), Kashyap, Yashvant2 (AUTHOR), Pandey, Rakesh Kumar2 (AUTHOR), Kumar, Pawan1,3 (AUTHOR) pawankumarmgcub@gmail.com, Kar, Manoranjan1 (AUTHOR) mano@iitp.ac.in
Source: Ceramics International. May2026:Part B, Vol. 52 Issue 12, p19542-19554. 13p.
Subjects: Supercapacitors, Energy storage, Polypyrrole, Graphene, X-ray powder diffraction, Electrochemical analysis, Rietveld refinement, Perovskite analysis
Abstract: La 2 BMnO 6 (B = Co, Ni, and Cu) double perovskite are interesting candidates for energy storage applications due to their abundant nature and high energy density. X-ray diffraction (XRD) was utilized to examine the La 2 BMnO 6 nanoparticles. FullProf software was used to assess phase purity and structural features using Rietveld refinement. Rietveld-refined XRD patterns revealed that La 2 BMnO 6 nanoparticles form in a single-phase monoclinic structure with the space group P2 1 /n. Graphene/Polypyrrole/La 2 BMnO 6 composites are employed in supercapacitor electrodes due to their high conductivity, pseudocapacitance, and structural stability, resulting in improved energy storage performance. Graphene/La 2 CuMnO 6 /Polypyrrole outperformed other samples in electrochemical performance, with a specific capacitance of 65 F/g at 100 mV/s and lower intrinsic resistance in a 3 M potassium hydroxide electrolyte. Over 1000 charge-discharge cycles at a current density of 500 mV/s, La 2 CuMnO 6 composites retained around 93% of their initial capacitance, exceeding La 2 CoMnO 6 composites (∼88%) and nearly approaching the performance of La 2 NiMnO 6 composites (∼91%). The performance of the constructed single-electrode supercapacitors was equivalent to, and in some cases exceeded, that of traditional glassy carbon electrodes. These findings imply that integrating different conductive fillers at very low concentrations can greatly improve electrode materials' durability and electrochemical performance. Therefore, this study highlights La 2 CuMnO 6 's potential for high-performance supercapacitor applications by utilizing optimized perovskite-based composites. [ABSTRACT FROM AUTHOR]
Copyright of Ceramics International is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Label: Title
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  Data: Enhanced electrochemical performance of graphene/La2BMnO6/PPy composites for supercapacitor applications.
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  Data: <searchLink fieldCode="AR" term="%22Kumar%2C+Amod%22">Kumar, Amod</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Das%2C+Tupan%22">Das, Tupan</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Dev%2C+Amar%22">Dev, Amar</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Kashyap%2C+Yashvant%22">Kashyap, Yashvant</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Pandey%2C+Rakesh+Kumar%22">Pandey, Rakesh Kumar</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Kumar%2C+Pawan%22">Kumar, Pawan</searchLink><relatesTo>1,3</relatesTo> (AUTHOR)<i> pawankumarmgcub@gmail.com</i><br /><searchLink fieldCode="AR" term="%22Kar%2C+Manoranjan%22">Kar, Manoranjan</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> mano@iitp.ac.in</i>
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  Data: <searchLink fieldCode="JN" term="%22Ceramics+International%22">Ceramics International</searchLink>. May2026:Part B, Vol. 52 Issue 12, p19542-19554. 13p.
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  Data: <searchLink fieldCode="DE" term="%22Supercapacitors%22">Supercapacitors</searchLink><br /><searchLink fieldCode="DE" term="%22Energy+storage%22">Energy storage</searchLink><br /><searchLink fieldCode="DE" term="%22Polypyrrole%22">Polypyrrole</searchLink><br /><searchLink fieldCode="DE" term="%22Graphene%22">Graphene</searchLink><br /><searchLink fieldCode="DE" term="%22X-ray+powder+diffraction%22">X-ray powder diffraction</searchLink><br /><searchLink fieldCode="DE" term="%22Electrochemical+analysis%22">Electrochemical analysis</searchLink><br /><searchLink fieldCode="DE" term="%22Rietveld+refinement%22">Rietveld refinement</searchLink><br /><searchLink fieldCode="DE" term="%22Perovskite+analysis%22">Perovskite analysis</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: La 2 BMnO 6 (B = Co, Ni, and Cu) double perovskite are interesting candidates for energy storage applications due to their abundant nature and high energy density. X-ray diffraction (XRD) was utilized to examine the La 2 BMnO 6 nanoparticles. FullProf software was used to assess phase purity and structural features using Rietveld refinement. Rietveld-refined XRD patterns revealed that La 2 BMnO 6 nanoparticles form in a single-phase monoclinic structure with the space group P2 1 /n. Graphene/Polypyrrole/La 2 BMnO 6 composites are employed in supercapacitor electrodes due to their high conductivity, pseudocapacitance, and structural stability, resulting in improved energy storage performance. Graphene/La 2 CuMnO 6 /Polypyrrole outperformed other samples in electrochemical performance, with a specific capacitance of 65 F/g at 100 mV/s and lower intrinsic resistance in a 3 M potassium hydroxide electrolyte. Over 1000 charge-discharge cycles at a current density of 500 mV/s, La 2 CuMnO 6 composites retained around 93% of their initial capacitance, exceeding La 2 CoMnO 6 composites (∼88%) and nearly approaching the performance of La 2 NiMnO 6 composites (∼91%). The performance of the constructed single-electrode supercapacitors was equivalent to, and in some cases exceeded, that of traditional glassy carbon electrodes. These findings imply that integrating different conductive fillers at very low concentrations can greatly improve electrode materials' durability and electrochemical performance. Therefore, this study highlights La 2 CuMnO 6 's potential for high-performance supercapacitor applications by utilizing optimized perovskite-based composites. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Ceramics International is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1016/j.ceramint.2026.03.051
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      – Code: eng
        Text: English
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        PageCount: 13
        StartPage: 19542
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      – SubjectFull: Supercapacitors
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      – SubjectFull: Energy storage
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      – SubjectFull: Polypyrrole
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      – SubjectFull: Graphene
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      – SubjectFull: X-ray powder diffraction
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      – SubjectFull: Electrochemical analysis
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      – SubjectFull: Rietveld refinement
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      – SubjectFull: Perovskite analysis
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      – TitleFull: Enhanced electrochemical performance of graphene/La2BMnO6/PPy composites for supercapacitor applications.
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              M: 05
              Text: May2026:Part B
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              Y: 2026
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