Biochar-ZnO/polyaniline composite in energy storage application: Synthesis, characterization and electrochemical analysis
Carbon materials displaying electrical double layer capacitance are widely used in the electrochemical energy storage devices. To enhance the electrochemical performance, compositing carbon with transition metal oxides and conducting polymers have been very much appreciated. A novel and effective ap...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-12-01
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| Series: | Results in Chemistry |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2211715623003004 |
| _version_ | 1797398616510300160 |
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| author | Diana Thomas Noeline B. Fernandez Manohar D Mullassery R. Surya |
| author_facet | Diana Thomas Noeline B. Fernandez Manohar D Mullassery R. Surya |
| author_sort | Diana Thomas |
| collection | DOAJ |
| description | Carbon materials displaying electrical double layer capacitance are widely used in the electrochemical energy storage devices. To enhance the electrochemical performance, compositing carbon with transition metal oxides and conducting polymers have been very much appreciated. A novel and effective approach to prepare a high energy density and high specific capacitance composite electrode material from a biomass is presented in the work. Pyrolysis of biomass at 500 °C in the nitrogen atmosphere yielded a biochar (BC) with well-developed porosity, surface functionality and suitable morphological characteristics. Anchoring ZnO nanoparticles on BC and subsequently coating it with a conducting polymeric material, polyaniline (PANI) obtained the hierarchical BC-ZnO/PANI composite. Both BC-ZnO and BC-ZnO/PANI composites have been characterized by FTIR, UV–Visible, XRD, SEM and TEM studies. The characteristic signals at 2θ values 18.5°, 28.4°, 24.0° and 31.4° in XRD correspond to wurtzite structure of ZnO nanoparticles. ZnO rod like structural morphology was confirmed by SEM analysis. The maximum specific capacitance was found to be 110.0 F/g for BC-ZnO and 198.0 F/g for BC-ZnO/PANI. The ternary composite displayed low solution resistance and charge transfer resistance as evident from the Nyquist plots. The results proved that PANI coating is a promising methodology in the fabrication of electrode materials for energy storage applications. |
| first_indexed | 2024-03-09T01:28:08Z |
| format | Article |
| id | doaj.art-3202cae081f24bc4a5c8e77d2964d598 |
| institution | Directory Open Access Journal |
| issn | 2211-7156 |
| language | English |
| last_indexed | 2024-03-09T01:28:08Z |
| publishDate | 2023-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Chemistry |
| spelling | doaj.art-3202cae081f24bc4a5c8e77d2964d5982023-12-10T06:15:06ZengElsevierResults in Chemistry2211-71562023-12-016101061Biochar-ZnO/polyaniline composite in energy storage application: Synthesis, characterization and electrochemical analysisDiana Thomas0Noeline B. Fernandez1Manohar D Mullassery2R. Surya3Department of Chemistry, Fatima Mata National College, Kollam 691001, Kerala, IndiaCorresponding author.; Department of Chemistry, Fatima Mata National College, Kollam 691001, Kerala, IndiaDepartment of Chemistry, Fatima Mata National College, Kollam 691001, Kerala, IndiaDepartment of Chemistry, Fatima Mata National College, Kollam 691001, Kerala, IndiaCarbon materials displaying electrical double layer capacitance are widely used in the electrochemical energy storage devices. To enhance the electrochemical performance, compositing carbon with transition metal oxides and conducting polymers have been very much appreciated. A novel and effective approach to prepare a high energy density and high specific capacitance composite electrode material from a biomass is presented in the work. Pyrolysis of biomass at 500 °C in the nitrogen atmosphere yielded a biochar (BC) with well-developed porosity, surface functionality and suitable morphological characteristics. Anchoring ZnO nanoparticles on BC and subsequently coating it with a conducting polymeric material, polyaniline (PANI) obtained the hierarchical BC-ZnO/PANI composite. Both BC-ZnO and BC-ZnO/PANI composites have been characterized by FTIR, UV–Visible, XRD, SEM and TEM studies. The characteristic signals at 2θ values 18.5°, 28.4°, 24.0° and 31.4° in XRD correspond to wurtzite structure of ZnO nanoparticles. ZnO rod like structural morphology was confirmed by SEM analysis. The maximum specific capacitance was found to be 110.0 F/g for BC-ZnO and 198.0 F/g for BC-ZnO/PANI. The ternary composite displayed low solution resistance and charge transfer resistance as evident from the Nyquist plots. The results proved that PANI coating is a promising methodology in the fabrication of electrode materials for energy storage applications.http://www.sciencedirect.com/science/article/pii/S2211715623003004BiocharSuper capacitorPANIZnO |
| spellingShingle | Diana Thomas Noeline B. Fernandez Manohar D Mullassery R. Surya Biochar-ZnO/polyaniline composite in energy storage application: Synthesis, characterization and electrochemical analysis Results in Chemistry Biochar Super capacitor PANI ZnO |
| title | Biochar-ZnO/polyaniline composite in energy storage application: Synthesis, characterization and electrochemical analysis |
| title_full | Biochar-ZnO/polyaniline composite in energy storage application: Synthesis, characterization and electrochemical analysis |
| title_fullStr | Biochar-ZnO/polyaniline composite in energy storage application: Synthesis, characterization and electrochemical analysis |
| title_full_unstemmed | Biochar-ZnO/polyaniline composite in energy storage application: Synthesis, characterization and electrochemical analysis |
| title_short | Biochar-ZnO/polyaniline composite in energy storage application: Synthesis, characterization and electrochemical analysis |
| title_sort | biochar zno polyaniline composite in energy storage application synthesis characterization and electrochemical analysis |
| topic | Biochar Super capacitor PANI ZnO |
| url | http://www.sciencedirect.com/science/article/pii/S2211715623003004 |
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