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Luais, Erwann,Mery, Adrien,Abou-Rjeily, John,Sakai, Joe,Tran-Van, Francois,Ghamouss, Fouad The Korean Electrochemical Society 2019 Journal of electrochemical science and technology Vol.10 No.4
In this paper, we report the preparation of a flexible, self-standing and binder-free carbon nanotubes (CNTs) electrode with an electro-generated current collector. The copper current collector layer was electrodeposited on the backside of CNTs self-standing film obtained by a simple filtration process. The obtained CNTs-Cu assembly was used as a negative electrode in Li-ion batteries exhibiting good performance along with proving its applicability in flexible batteries.
Li- and Na-ion Storage Performance of Natural Graphite via Simple Flotation Process
Laziz, Noureddine Ait,Abou-Rjeily, John,Darwiche, Ali,Toufaily, Joumana,Outzourhit, Abdelkader,Ghamouss, Fouad,Sougrati, Moulay Tahar The Korean Electrochemical Society 2018 Journal of electrochemical science and technology Vol.9 No.4
Natural graphite is obtained from an abandoned open-cast mine and purified by a simple, eco-friendly and affordable beneficiation process including ball milling and flotation process. Both raw graphite (55 wt %) and its concentrate (85 wt %) were electrochemically tested in order to evaluate these materials as anode materials for Li-ion and Na-ion batteries. It was found that both raw and purified graphites exhibit good electrochemical activities with respect to lithium and sodium ions through completely different reaction mechanisms. The encouraging results demonstrated in this work suggest that both raw and graphite concentrates after flotation could be used respectively for stationary and embedded applications. This strategy would help in developing local electrical storage systems with a significantly low environmental footprint.