| Téléchargement | - Voir la version finale : Graphene/Na carboxymethyl cellulose composite for Li-ion batteries prepared by enhanced liquid exfoliation (PDF, 2.0 Mio)
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| DOI | Trouver le DOI : https://doi.org/10.1016/j.mseb.2016.04.003 |
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| Auteur | Rechercher : Naboka, Olga1; Rechercher : Yim, Chae-Ho1; Rechercher : Abu-Lebdeh, Yaser1 |
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| Affiliation | - Conseil national de recherches Canada. Énergie, les mines et l'environnement
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| Format | Texte, Article |
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| Résumé | In the present work, we report a sonication-assisted exfoliation method of graphene preparationenhanced by the use of microwave heating and “green” exfoliant – sodium carboxymethyl cellulose(NaCMC). Introducing microwave heating during sonication of graphite dispersions in aqueous solutionsof NaCMC results in the formation of graphene dispersions with concentration as high as 4.29 mg/ml. It isfound that drying the dispersions results in the formation of graphene/NaCMC composites with graphenecontent up to 38.65 wt%. A study of the composite with High Resolution Transmission Electron Microscopyand Raman Spectroscopy reveals the formation of few-layer graphene approximately below five layers.The as-prepared graphene/NaCMC composite shows higher capacities than commercial graphite in Li-ionhalf cells reaching 397 mAh/g(graphene). Also, when the composite is used with a nanosilicon (33 wt%) in aLi-ion half cell high initial reversible capacities of 1611 mAh/g(Si)with good cyclability and rate capabilityhave been reached. |
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| Date de publication | 2016-04-24 |
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| Dans | |
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| Langue | anglais |
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| Publications évaluées par des pairs | Oui |
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| Numéro NPARC | 23000213 |
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| Exporter la notice | Exporter en format RIS |
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| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
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| Identificateur de l’enregistrement | 53b49153-7e23-4e60-9847-41177eef882f |
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| Enregistrement créé | 2016-06-21 |
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| Enregistrement modifié | 2020-06-02 |
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