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| DOI | Trouver le DOI : https://doi.org/10.1016/j.jpowsour.2012.01.042 |
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| Auteur | Rechercher : Yim, Chae-Ho1; Rechercher : Baranova, Elena A.; Rechercher : Abu-Lebdeh, Yaser1; Rechercher : Davidson, Isobel1 |
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| Affiliation | - Conseil national de recherches du Canada
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| Format | Texte, Article |
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| Sujet | LiFePO4; Li-ion battery; cathode material; three-dimensionally ordered macroporous structure; organic template assisted synthesis |
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| Résumé | An organic template assisted synthesis was developed to obtain highly ordered porous LiFePO4 cathode material. The developed synthesis enabled the use of polystyrene (PS) as template by modifying its surface with a surfactant (Brij 78) to render it hydrophilic. The material was synthesized in high yield and purity as confirmed by X-ray powder diffraction. The TEM and SEM images clearly confirmed the presence of a highly ordered porous structure and the latter showed that the structure has an average pore diameter of 400 nm and a wall thickness and depth of ~100 nm. Thermal scans and elemental analysis showed that the material contains a high amount of carbon reaching 23-28% by weight. The surface area was calculated using the BET method and found to be 7.71m(to the power of 2)g(to the power of-1). Li/LiFePO4 half cells were tested and gave satisfactory discharge capacities; an initial capacity [158mAhg(to the power of -1)] close to the theoretical value and recoverable capacities at high C-rates (2-5 C). |
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| Date de publication | 2012-01-10 |
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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 du CNRC | NRCC 53048 |
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| Numéro NPARC | 19554418 |
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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 | f44190dc-f6a7-4320-b781-44460cccee7f |
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| Enregistrement créé | 2012-02-24 |
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| Enregistrement modifié | 2020-04-21 |
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