Supercapacitor Electrodes from Viscose-Based Activated Carbon Fibers: Significant Yield and Performance Improvement Using Diammonium Hydrogen Phosphate as Impregnating Agent
Viscose fibers were impregnated with different concentrations of diammonium hydrogen phosphate (DAHP), carbonized, activated, and tested as high-performance electrode materials for supercapacitors. The yield of these activated carbon fibers (ACFs) could be increased by a factor of 14 by using DAHP c...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-03-01
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| Series: | C |
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| Online Access: | https://www.mdpi.com/2311-5629/6/2/17 |
| _version_ | 1797626541297893376 |
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| author | Stefan Breitenbach Alexander Lumetzberger Mathias Andreas Hobisch Christoph Unterweger Stefan Spirk David Stifter Christian Fürst Achim Walter Hassel |
| author_facet | Stefan Breitenbach Alexander Lumetzberger Mathias Andreas Hobisch Christoph Unterweger Stefan Spirk David Stifter Christian Fürst Achim Walter Hassel |
| author_sort | Stefan Breitenbach |
| collection | DOAJ |
| description | Viscose fibers were impregnated with different concentrations of diammonium hydrogen phosphate (DAHP), carbonized, activated, and tested as high-performance electrode materials for supercapacitors. The yield of these activated carbon fibers (ACFs) could be increased by a factor of 14 by using DAHP compared to ACF without impregnation. These specific activation procedures yielded a high specific surface area of more than 2700 m<sup>2</sup>·g<sup>−1</sup> with a pore size distribution (PSD) suitable for use as a supercapacitor electrode. The electrode materials were implemented in symmetric supercapacitors using TEMA BF<sub>4</sub> as electrolyte and cyclic voltammetry measurements showed high specific capacitances of up to 167 F·g<sup>−1</sup>. Furthermore, the devices showed high energy densities of up to 21.4 W·h·kg<sup>−1</sup> and high-power densities of up to 8.7 kW·kg<sup>−1</sup>. The supercapacitors featured high capacity retention (96%) after 10,000 cycles. These results show that ACFs made of viscose fibers, previously impregnated with DAHP, can be used as high-performance electrodes in supercapacitors for energy storage applications. |
| first_indexed | 2024-03-11T10:12:53Z |
| format | Article |
| id | doaj.art-821ebbdae066412b9df1d79ea54a52cb |
| institution | Directory Open Access Journal |
| issn | 2311-5629 |
| language | English |
| last_indexed | 2024-03-11T10:12:53Z |
| publishDate | 2020-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | C |
| spelling | doaj.art-821ebbdae066412b9df1d79ea54a52cb2023-11-16T14:26:06ZengMDPI AGC2311-56292020-03-01621710.3390/c6020017Supercapacitor Electrodes from Viscose-Based Activated Carbon Fibers: Significant Yield and Performance Improvement Using Diammonium Hydrogen Phosphate as Impregnating AgentStefan Breitenbach0Alexander Lumetzberger1Mathias Andreas Hobisch2Christoph Unterweger3Stefan Spirk4David Stifter5Christian Fürst6Achim Walter Hassel7Wood K plus—Kompetenzzentrum Holz GmbH, 4040 Linz, AustriaCenter for Surface and Nanoanalytics (ZONA), Johannes Kepler University Linz, 4040 Linz, AustriaInstitute of Bioproducts and Paper Technology (BPTI), Graz University of Technology, 8010 Graz, AustriaWood K plus—Kompetenzzentrum Holz GmbH, 4040 Linz, AustriaInstitute of Bioproducts and Paper Technology (BPTI), Graz University of Technology, 8010 Graz, AustriaCenter for Surface and Nanoanalytics (ZONA), Johannes Kepler University Linz, 4040 Linz, AustriaWood K plus—Kompetenzzentrum Holz GmbH, 4040 Linz, AustriaInstitute of Chemical Technology of Inorganic Materials (TIM), Johannes Kepler University Linz, 4040 Linz, AustriaViscose fibers were impregnated with different concentrations of diammonium hydrogen phosphate (DAHP), carbonized, activated, and tested as high-performance electrode materials for supercapacitors. The yield of these activated carbon fibers (ACFs) could be increased by a factor of 14 by using DAHP compared to ACF without impregnation. These specific activation procedures yielded a high specific surface area of more than 2700 m<sup>2</sup>·g<sup>−1</sup> with a pore size distribution (PSD) suitable for use as a supercapacitor electrode. The electrode materials were implemented in symmetric supercapacitors using TEMA BF<sub>4</sub> as electrolyte and cyclic voltammetry measurements showed high specific capacitances of up to 167 F·g<sup>−1</sup>. Furthermore, the devices showed high energy densities of up to 21.4 W·h·kg<sup>−1</sup> and high-power densities of up to 8.7 kW·kg<sup>−1</sup>. The supercapacitors featured high capacity retention (96%) after 10,000 cycles. These results show that ACFs made of viscose fibers, previously impregnated with DAHP, can be used as high-performance electrodes in supercapacitors for energy storage applications.https://www.mdpi.com/2311-5629/6/2/17supercapacitoractivated carbondiammonium hydrogen phosphateviscose fibersbio-based carbonenergy storage |
| spellingShingle | Stefan Breitenbach Alexander Lumetzberger Mathias Andreas Hobisch Christoph Unterweger Stefan Spirk David Stifter Christian Fürst Achim Walter Hassel Supercapacitor Electrodes from Viscose-Based Activated Carbon Fibers: Significant Yield and Performance Improvement Using Diammonium Hydrogen Phosphate as Impregnating Agent C supercapacitor activated carbon diammonium hydrogen phosphate viscose fibers bio-based carbon energy storage |
| title | Supercapacitor Electrodes from Viscose-Based Activated Carbon Fibers: Significant Yield and Performance Improvement Using Diammonium Hydrogen Phosphate as Impregnating Agent |
| title_full | Supercapacitor Electrodes from Viscose-Based Activated Carbon Fibers: Significant Yield and Performance Improvement Using Diammonium Hydrogen Phosphate as Impregnating Agent |
| title_fullStr | Supercapacitor Electrodes from Viscose-Based Activated Carbon Fibers: Significant Yield and Performance Improvement Using Diammonium Hydrogen Phosphate as Impregnating Agent |
| title_full_unstemmed | Supercapacitor Electrodes from Viscose-Based Activated Carbon Fibers: Significant Yield and Performance Improvement Using Diammonium Hydrogen Phosphate as Impregnating Agent |
| title_short | Supercapacitor Electrodes from Viscose-Based Activated Carbon Fibers: Significant Yield and Performance Improvement Using Diammonium Hydrogen Phosphate as Impregnating Agent |
| title_sort | supercapacitor electrodes from viscose based activated carbon fibers significant yield and performance improvement using diammonium hydrogen phosphate as impregnating agent |
| topic | supercapacitor activated carbon diammonium hydrogen phosphate viscose fibers bio-based carbon energy storage |
| url | https://www.mdpi.com/2311-5629/6/2/17 |
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