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http://hdl.handle.net/2445/158581
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DC Field | Value | Language |
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dc.contributor.author | Amade Rovira, Roger | - |
dc.contributor.author | Muyshegyan-Avetisyan, Arevik | - |
dc.contributor.author | Martí González, Joan | - |
dc.contributor.author | Pérez del Pino, Ángel | - |
dc.contributor.author | György, Eniko | - |
dc.contributor.author | Pascual Miralles, Esther | - |
dc.contributor.author | Andújar Bella, José Luis | - |
dc.contributor.author | Bertrán Serra, Enric | - |
dc.date.accessioned | 2020-05-04T14:31:28Z | - |
dc.date.available | 2020-05-04T14:31:28Z | - |
dc.date.issued | 2019-02-04 | - |
dc.identifier.issn | 1996-1944 | - |
dc.identifier.uri | http://hdl.handle.net/2445/158581 | - |
dc.description.abstract | Graphene nano-walls (GNWs) are promising materials that can be used as an electrode in electrochemical devices. We have grown GNWs by inductively-coupled plasma-enhanced chemical vapor deposition on stainless steel (AISI304) substrate. In order to enhance the super-capacitive properties of the electrodes, we have deposited a thin layer of MnO2 by electrodeposition method. We studied the effect of annealing temperature on the electrochemical properties of the samples between 70 °C and 600 °C. Best performance for supercapacitor applications was obtained after annealing at 70 °C with a specific capacitance of 104 F·g−1 at 150 mV·s−1 and a cycling stability of more than 14k cycles with excellent coulombic efficiency and 73% capacitance retention. Electrochemical impedance spectroscopy, cyclic voltammetry, and galvanostatic charge/discharge measurements reveal fast proton diffusion (1.3 × 10−13 cm2·s−1) and surface redox reaction after annealing at 70 °C. | - |
dc.format.extent | 13 p. | - |
dc.format.mimetype | application/pdf | - |
dc.language.iso | eng | - |
dc.publisher | MDPI | - |
dc.relation.isformatof | Reproducció del document publicat a: https://doi.org/10.3390/ma12030483 | - |
dc.relation.ispartof | Materials, 2019, vol. 12, num. 3, p. 483 | - |
dc.relation.uri | https://doi.org/10.3390/ma12030483 | - |
dc.rights | cc-by (c) Amade Rovira, Roger et al., 2019 | - |
dc.rights.uri | http://creativecommons.org/licenses/by/3.0/es | - |
dc.source | Articles publicats en revistes (Física Aplicada) | - |
dc.subject.classification | Grafè | - |
dc.subject.classification | Aparells electrònics | - |
dc.subject.classification | Acer inoxidable | - |
dc.subject.other | Graphene | - |
dc.subject.other | Electronic apparatus and appliances | - |
dc.subject.other | Stainless steel | - |
dc.title | Super-Capacitive Performance of Manganese Dioxide/Graphene Nano-Walls Electrodes Deposited on Stainless Steel Current Collectors | - |
dc.type | info:eu-repo/semantics/article | - |
dc.type | info:eu-repo/semantics/publishedVersion | - |
dc.identifier.idgrec | 685602 | - |
dc.date.updated | 2020-05-04T14:31:28Z | - |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | - |
dc.identifier.pmid | 30720766 | - |
Appears in Collections: | Articles publicats en revistes (Física Aplicada) |
Files in This Item:
File | Description | Size | Format | |
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685602.pdf | 3.6 MB | Adobe PDF | View/Open |
This item is licensed under a Creative Commons License