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Zolin, L., Chandesris, M., Porcher, W. & Lestriez, B. (2019) An Innovative Process for Ultra-Thick Electrodes Elaboration: Toward Low-Cost and High-Energy Batteries. Energy Technology, 7 1900025.
Added by: Richard Baschera (2019-07-15 14:27:14) Last edited by: Richard Baschera (2019-07-17 09:51:44) |
| Type de référence: Article DOI: 10.1002/ente.201900025 Clé BibTeX: Zolin2019 Voir tous les détails bibliographiques  |
Catégories: ST2E Créateurs: Chandesris, Lestriez, Porcher, Zolin Collection: Energy Technology |
Consultations : 1/365
Indice de consultation : 4% Indice de popularité : 1% |
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An effective route to enhance the volume ratio of active materials in a lithium-ion battery (LIB) or sodium-ion battery (NaB) consists in increasing the electrode thickness, that is, active mass loading, as it reduces the volume and weight fractions of the separator and current collectors in the cell. This approach also serves to reduce the battery cost, chiefly associated with the expensive polymeric separator. However, following the standard industrial coating process, the mechanically stable electrode can hardly exceed an active mass loading of about 30mgcm(-2), corresponding to a nominal areal capacity around 6mAhcm(-2) due to the binder migration during the drying step. Herein, a straightforward manufacturing process based on a filtration technique is developed. It enables the design of LIB electrodes with a nominal areal capacity up to 20mAhcm(-2). A pierced and serrated current collector allows at the same time both filtration and mechanical interlocking of the electrode layer. Cells assembled with such ultra-thick filtered electrodes exhibit very promising performances, thereby promoting the design of high-energy and low-cost LIBs and NaBs by a fast fabrication process.
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