Partially exfoliated graphite oxide and lignin composites for battery electrode materials
Lignin has garnered significant research attention as a sustainable alternative for various materials and applications. However, its effectiveness as an exfoliating agent and its electrochemical properties have yet to be fully explored and validated. To address this gap, our current study focuses on...
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Elsevier
2025-06-01
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| Series: | Journal of Science: Advanced Materials and Devices |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2468217925000401 |
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| author | Nagore Izaguirre Mikel Alberro Xabier Erdocia Jalel Labidi |
| author_facet | Nagore Izaguirre Mikel Alberro Xabier Erdocia Jalel Labidi |
| author_sort | Nagore Izaguirre |
| collection | DOAJ |
| description | Lignin has garnered significant research attention as a sustainable alternative for various materials and applications. However, its effectiveness as an exfoliating agent and its electrochemical properties have yet to be fully explored and validated. To address this gap, our current study focuses on the synthesis of hybrid materials based on a partial exfoliation of graphite and its oxidized analog, employing a novel method in which the ultrasound (US) forces applied are enhanced by the incorporation of lignin, further promoting the exfoliation. During the synthesis process, graphite layers are separated, and lignin particles are intercalated between these layers, promoting exfoliation. In this study, we incorporated two types of lignin, namely Kraft lignin (KL) and organosolv lignin (OL), and characterized the resulting materials using physicochemical (FTIR, Raman, EA, XRD, and XPS), morphological (AFM, and SEM), and electrochemical (CV and EIS) techniques. The physicochemical and morphological analyses provided substantial evidence supporting the exfoliating capacity of lignins and their deposition on the partially exfoliated surface. Interestingly, the effectiveness of lignins was found to be more pronounced in the case of oxidized graphite (GO) as compared to non-oxidized graphite. This observation was further corroborated by improved electrochemical performances, evidencing the deposition of lignin particles and the exfoliation as positive contributions to enhanced capacity values. |
| format | Article |
| id | doaj-art-9d7cb2d0fbbc473a9f47f428d1cc56be |
| institution | OA Journals |
| issn | 2468-2179 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Science: Advanced Materials and Devices |
| spelling | doaj-art-9d7cb2d0fbbc473a9f47f428d1cc56be2025-08-20T02:30:10ZengElsevierJournal of Science: Advanced Materials and Devices2468-21792025-06-0110210088710.1016/j.jsamd.2025.100887Partially exfoliated graphite oxide and lignin composites for battery electrode materialsNagore Izaguirre0Mikel Alberro1Xabier Erdocia2Jalel Labidi3Biorefinery Processes Research Group, Chemical and Environmental Engineering Department, Faculty of Egingeering of Gipuzkoa, University of the Basque Country UPV/EHU, Plaza Europa 1, 20018, San Sebastian, SpainBiorefinery Processes Research Group, Department of Electronic Technology, Faculty of Engineering of Gipuzkoa, University of the Basque Country UPV/EHU, Plaza Europa 1, 20018, San Sebastian, SpainBiorefinery Processes Research Group, Department of Applied Mathematics, Faculty of Engineering of Gipuzkoa, University of the Basque Country UPV/EHU, Plaza Europa 1, 20018, San Sebastian, SpainBiorefinery Processes Research Group, Chemical and Environmental Engineering Department, Faculty of Egingeering of Gipuzkoa, University of the Basque Country UPV/EHU, Plaza Europa 1, 20018, San Sebastian, Spain; Corresponding author.Lignin has garnered significant research attention as a sustainable alternative for various materials and applications. However, its effectiveness as an exfoliating agent and its electrochemical properties have yet to be fully explored and validated. To address this gap, our current study focuses on the synthesis of hybrid materials based on a partial exfoliation of graphite and its oxidized analog, employing a novel method in which the ultrasound (US) forces applied are enhanced by the incorporation of lignin, further promoting the exfoliation. During the synthesis process, graphite layers are separated, and lignin particles are intercalated between these layers, promoting exfoliation. In this study, we incorporated two types of lignin, namely Kraft lignin (KL) and organosolv lignin (OL), and characterized the resulting materials using physicochemical (FTIR, Raman, EA, XRD, and XPS), morphological (AFM, and SEM), and electrochemical (CV and EIS) techniques. The physicochemical and morphological analyses provided substantial evidence supporting the exfoliating capacity of lignins and their deposition on the partially exfoliated surface. Interestingly, the effectiveness of lignins was found to be more pronounced in the case of oxidized graphite (GO) as compared to non-oxidized graphite. This observation was further corroborated by improved electrochemical performances, evidencing the deposition of lignin particles and the exfoliation as positive contributions to enhanced capacity values.http://www.sciencedirect.com/science/article/pii/S2468217925000401Kraft ligninOrganosolv ligninGraphite oxidePartial exfoliationElectrode material |
| spellingShingle | Nagore Izaguirre Mikel Alberro Xabier Erdocia Jalel Labidi Partially exfoliated graphite oxide and lignin composites for battery electrode materials Journal of Science: Advanced Materials and Devices Kraft lignin Organosolv lignin Graphite oxide Partial exfoliation Electrode material |
| title | Partially exfoliated graphite oxide and lignin composites for battery electrode materials |
| title_full | Partially exfoliated graphite oxide and lignin composites for battery electrode materials |
| title_fullStr | Partially exfoliated graphite oxide and lignin composites for battery electrode materials |
| title_full_unstemmed | Partially exfoliated graphite oxide and lignin composites for battery electrode materials |
| title_short | Partially exfoliated graphite oxide and lignin composites for battery electrode materials |
| title_sort | partially exfoliated graphite oxide and lignin composites for battery electrode materials |
| topic | Kraft lignin Organosolv lignin Graphite oxide Partial exfoliation Electrode material |
| url | http://www.sciencedirect.com/science/article/pii/S2468217925000401 |
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