Novel montmorillonite-based ceramic membrane (CM) has been prepared with poly(vinylidene fluoride-co-hexafluoropropene) (PVdF-HFP) copolymer as binder. Physical properties such as surface morphology, porosity, liquid electrolyte uptake and thermal stability were analysed. The ceramic membrane was activated by soaking it in a non-aqueous liquid electrolyte (1.0 M LiPF6 solution in 1/1 v/v ethylene carbonate/diethyl carbonate mixture) for 10 min. The compatibility of the membrane with lithium metal anode as a function of storage time was analysed by assembling a Li/CM/Li symmetric cell. Finally, a lab-scale cell composed of Li/CM/LiFePO4 is assembled and its cycling performance analysed at different C-rates. Although the ceramic membrane is not flexible, it shows high thermal stability and stable interfacial properties when in contact with the lithium metal anode. A stable cycling behaviour is demonstrated even at 1C-rate with limited fade in capacity.
Montmorillonite-based ceramic membranes as novel lithium-ion battery separators / Raja M.; Prem Kumar T; Sanjeev G.; Zolin L.; Gerbaldi C.; Stephan A.M.. - In: IONICS. - ISSN 0947-7047. - STAMPA. - 20:7(2014), pp. 943-948. [10.1007/s11581-013-1030-y]
|Titolo:||Montmorillonite-based ceramic membranes as novel lithium-ion battery separators|
|Data di pubblicazione:||2014|
|Digital Object Identifier (DOI):||http://dx.doi.org/10.1007/s11581-013-1030-y|
|Appare nelle tipologie:||1.1 Articolo in rivista|
File in questo prodotto: