Nanostructured bismuth phosphate-based asymmetric supercapacitor: electrochemical evaluation and oscillator application
Kumari, Pooja; Ghosh, Sarit K.; Perla, Venkata K.; Saha, Chandan; Singh, Harishchandra; Mallick, Kaushik (2024-10-09)
Springer
09.10.2024
Kumari, P., Ghosh, S.K., Perla, V.K. et al. Nanostructured bismuth phosphate-based asymmetric supercapacitor: electrochemical evaluation and oscillator application. J Mater Sci: Mater Electron 35, 1882 (2024). https://doi.org/10.1007/s10854-024-13633-x.
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© The Author(s), 2024. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.
https://creativecommons.org/licenses/by/4.0/
© The Author(s), 2024. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.
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Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi:oulu-202410216396
https://urn.fi/URN:NBN:fi:oulu-202410216396
Tiivistelmä
Abstract
Phosphate-based materials have received significant attention for various applications. In supercapacitors, metal phosphates exhibit high capacitance and superior rate performance. In this work, a wet chemical route was applied for the fabrication of aniline stabilized monoclinic bismuth phosphate (BPO) particles within the size range of 4–10 nm. The synthesized material was utilized as an active component for the application of a supercapacitor. The performances of the material were examined on a nickel foam for a three-electrode electrochemical cell. The material showed the maximum specific capacitance (\({C}_{SP}\)) value of 255 F.g⁻¹ at the current density (CD) of 2 A.g⁻¹. Further, an asymmetric supercapacitor (ASC) device was fabricated with BPO and single wall carbon nanotube (SWCNT) as negative and positive electrodes, respectively, which delivered a specific capacity value (\({Q}_{s}\)) of 1462 mAh.g⁻¹ under the CD of 0.4 A.g⁻¹ with the energy density (ED) and power density (PD) values of 2.2 Wh.kg⁻¹ and 0.68 kW.kg⁻¹, respectively. The device exhibited capacity retention and coulombic efficiency (CE) values of 84 and 95% at 0.9 A.g⁻¹ for 10,000 galvanostatic charge–discharge (GCD) cycles. The ASC device generated a low-frequency waveform and has the potential to function as an oscillator.
Phosphate-based materials have received significant attention for various applications. In supercapacitors, metal phosphates exhibit high capacitance and superior rate performance. In this work, a wet chemical route was applied for the fabrication of aniline stabilized monoclinic bismuth phosphate (BPO) particles within the size range of 4–10 nm. The synthesized material was utilized as an active component for the application of a supercapacitor. The performances of the material were examined on a nickel foam for a three-electrode electrochemical cell. The material showed the maximum specific capacitance (\({C}_{SP}\)) value of 255 F.g⁻¹ at the current density (CD) of 2 A.g⁻¹. Further, an asymmetric supercapacitor (ASC) device was fabricated with BPO and single wall carbon nanotube (SWCNT) as negative and positive electrodes, respectively, which delivered a specific capacity value (\({Q}_{s}\)) of 1462 mAh.g⁻¹ under the CD of 0.4 A.g⁻¹ with the energy density (ED) and power density (PD) values of 2.2 Wh.kg⁻¹ and 0.68 kW.kg⁻¹, respectively. The device exhibited capacity retention and coulombic efficiency (CE) values of 84 and 95% at 0.9 A.g⁻¹ for 10,000 galvanostatic charge–discharge (GCD) cycles. The ASC device generated a low-frequency waveform and has the potential to function as an oscillator.
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