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Reyter, D., Rousselot, S., Mazouzi, D., Gauthier, M., Moreau, P., Lestriez, B., Guyomard, D. & Roue, L. (2013) An electrochemically roughened Cu current collector for Si-based electrode in Li-ion batteries. J. Power Sources, 239 308–314.
Added by: Laurent Cournède (2016-03-10 21:23:30) |
| Type de référence: Article DOI: 10.1016/j.jpowsour.2013.03.108 Numéro d'identification (ISBN etc.): 0378-7753 Clé BibTeX: Reyter2013 Voir tous les détails bibliographiques  |
Catégories: ST2E Mots-clés: composite electrode, Current collector, Cycle performance, high-capacity, insertion, lithium, Lithium-ion battery, long cycle life, performance, rechargeable batteries, silicon anode, Silicon-based anode, thin-film Créateurs: Gauthier, Guyomard, Lestriez, Mazouzi, Moreau, Reyter, Roue, Rousselot Collection: J. Power Sources |
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An electrochemically roughened copper foil was evaluated as a current collector for micrometric Si powder (ball-milled) based electrodes prepared by the conventional slurry-coating method. The formation of a bunch of copper nanowires on the current collector provides a rough surface, which enhances the adhesion of the Si composite electrode as confirmed from scratch tests. This produces a major decrease of the irreversible capacity associated with the electrical disconnection of the Si particles with cycling, which results in a great improvement of the electrode cycle life. With such a roughened Cu current collector, the micrometric Si-based electrode is able to maintain a discharge capacity of 1200 mAh g(-1) for at least 1000 cycles. (C) 2013 Elsevier B.V. All rights reserved.
Added by: Laurent Cournède |