Supporting information for Comparison of the influence of oxygen groups introduced by graphene oxide on the activity of carbon felt in vanadium and anthraquinone flow batteries [Dataset]
9 figures, 3 tables, 1 video.-- 2. X-ray diffraction and scanning electron microscopy: The change in the wettability properties of the pristine felt is evidenced in the following video sequence, where some drops of water were poured on top of the felt (both pristine and rGO-PEG modified felt). When...
| Autores: | , , , , , , , , |
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| Tipo de documento: | conjunto de datos |
| Data de publicação: | 2024 |
| País: | España |
| Recursos: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositório: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/354159 |
| Acesso em linha: | http://hdl.handle.net/10261/354159 |
| Access Level: | Acceso aberto |
| Palavra-chave: | http://metadata.un.org/sdg/7 Ensure access to affordable, reliable, sustainable and modern energy for all |
| Resumo: | 9 figures, 3 tables, 1 video.-- 2. X-ray diffraction and scanning electron microscopy: The change in the wettability properties of the pristine felt is evidenced in the following video sequence, where some drops of water were poured on top of the felt (both pristine and rGO-PEG modified felt). When the drop is deposited on the surface of the pristine felt (Figure S5, left) it remains intact on its surface indicating some degree of hydrophobicity. Whereas, when water drops are deposited on the rGO-modified felt (Figure S5, right), they permeate into the interior of the felt. This shows that the impregnation of the felt with rGO-PEG increases its hydrophilicity, favoring the water/felt interphase contact and the diffusion of the aqueous electrolyte inside the felt. Hydrophilicity can also help to prevent the retention of air bubbles during the assembly of the flow cell and improve electrolyte flow distribution through the electrode.-- 5. Randles-Sevčik Analysis: To estimate the comparative surface area of the pristine and modified felts, a Randles-Sevčik was performed on the voltammograms with the knowledge of the reported diffusion coefficient.-- Under a Creative Commons Licenses CC-BY 4.0. |
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