Utilize este identificador para referenciar este registo: https://hdl.handle.net/1822/64608

TítuloMesoporous poly(vinylidene fluoride-co-trifluoroethylene) membranes for lithium-ion battery separators
Autor(es)Costa, C. M.
Kundu, M.
Dias, J. C.
Pereira, João Pedro Nunes
Botelho, Gabriela
Silva, Maria Manuela
Lanceros-Méndez, S.
Palavras-chavePorosity
Membranes
PVDF-TrFE
ZnO
Battery separator
DataAbr-2019
EditoraElsevier 1
RevistaElectrochimica Acta
Resumo(s)Mesoporous separator membranes based on poly(vinylidene fluoride-co-trifluoroethylene), PVDF-TrFE, were prepared through the removal of ZnO nanoparticles from the polymer matrix composite. Different filler concentrations were used, and the evaluation of the morphology, mechanical properties, uptake and ionic conductivity of the membranes were demonstrated that they depend on initial ZnO content in the composite. On the other hand, the vibration peaks characteristics of PVDF-TrFE and the thermal properties are independent on initial filler content. The membrane with the best ionic conductivity, 1.6 mS/cm, is the one prepared after 70 wt.% ZnO removal. The separator membranes were assembled in Li/C-LiFePO4 half-cells exhibiting good rate capability and cycling performance, the best battery performance being obtained for the PVDF-TrFE after 70 wt.% ZnO removal. The good performance of the developed separators was also demonstrated in full battery cells. Thus, a way to tailor membrane mesoporosity is presented and it is shown that the obtained membranes represent suitable separators for lithium-ion battery applications.
TipoArtigo
URIhttps://hdl.handle.net/1822/64608
DOI10.1016/j.electacta.2019.01.178
ISSN0013-4686
Versão da editorahttps://www.sciencedirect.com/science/article/pii/S0013468619302130
Arbitragem científicayes
AcessoAcesso aberto
Aparece nas coleções:FUNCTIONAL AND SMART MATERIALS AND SURFACES FOR ADVANCED APPLICATIONS (2018 - ...)
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