Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/31993
Registo completo
Campo DC | Valor | Idioma |
---|---|---|
dc.contributor.author | Sousa, R. E. | por |
dc.contributor.author | Nunes-Pereira, J. | por |
dc.contributor.author | Costa, C. M. | por |
dc.contributor.author | Silva, Maria Manuela | por |
dc.contributor.author | Lanceros-Méndez, S. | por |
dc.contributor.author | Hassoun, J. | por |
dc.contributor.author | Scrosat, B. | por |
dc.contributor.author | Appetecchi, G. B. | por |
dc.date.accessioned | 2014-12-15T18:22:37Z | - |
dc.date.available | 2014-12-15T18:22:37Z | - |
dc.date.issued | 2014-10 | - |
dc.identifier.citation | Sousa, R. E., Nunes-Pereira, J., Costa, C. M., Silva, M. M., Lanceros-Méndez, S., Hassoun, J., ... & Appetecchi, G. B. (2014). Influence of the porosity degree of poly (vinylidene fluoride-co-hexafluoropropylene) separators in the performance of Li-ion batteries. Journal of Power Sources, 263, 29-36. | por |
dc.identifier.issn | 0378-7753 | por |
dc.identifier.uri | https://hdl.handle.net/1822/31993 | - |
dc.description.abstract | Polyvinylidenedifluoride–hexafluoropropylene, (P(VdF–HFP))-based polymer electrolytes, as separators for lithium batteries, were prepared through different polymer/solvent (N,N-dimethylformamide, DMF) ratios and physicochemically investigated. Scanning electron microscopy measurements have shown a homogeneously distributed porosity within the membranes, with moderately tortuous pathways, resulting in a liquid uptake up to 77 wt.% with respect to the overall weight and conduction values above 10−3 S cm−1 at room temperature. Prolonged cycling tests, performed on Li/Sn–C and Li/LiFePO4 half-cells based on P(VdF–HFP) polymer electrolyte separator membranes, have evidenced nominal capacities ranging from 70% to 90% of the theoretical value with very good capacity retention and charge/discharge efficiency close at 100% even at high current rates. A capacity decay is observed at high current regime, associated to the diffusion phenomena occurring within the electrode and the polymer electrolyte separator membrane. | por |
dc.description.sponsorship | This work is funded by Federacion Espanola de Enfermedades Raras funds through the "Programa Operacional Factores de Competitividade-COMPETE" and by national funds from FCT-Fundacao para a Ciencia e a Tecnologia, in the framework of the strategic project Strategic Project PEST-C/FIS/UI607/2011 and PEst-C/QUI/U10686/2011. The authors also thank funding from Matepro-Optimizing Materials and Processes, ref. NORTE-07-0124-FEDER000037, co-funded by the "Programa Operacional Regional do Norte" (ON.2 - O Novo Norte), under the "Quadro de Referencia Estrategico Nacional" (QREN), through the "Fundo Europeu de Desenvolvimento Regional" (FEDER), and grants SFRH/BD/66930/2009 (J.N.P.) and SFRH/BD/68499/2010 (C.M.C.). G.B.A. thank the Italian Institute of Technology for the financial support. The authors thank Solvay for kindly supplying the high quality materials. | por |
dc.language.iso | eng | por |
dc.publisher | Elsevier 1 | por |
dc.rights | restrictedAccess | por |
dc.subject | Porous membranes | por |
dc.subject | Polyvinylidenedifluoride–hexafluoropropylene | por |
dc.subject | P(VdF–HFP) | por |
dc.subject | Lithium batteries | por |
dc.title | Influence of the porosity degree of poly(vinylidene fluoride-co-hexafluoropropylene) separators in the performance of Li-ion batteries | por |
dc.type | article | por |
dc.peerreviewed | yes | por |
sdum.publicationstatus | published | por |
oaire.citationStartPage | 29 | por |
oaire.citationEndPage | 36 | por |
oaire.citationTitle | Journal of Power Sources | por |
oaire.citationVolume | 263 | por |
dc.identifier.doi | 10.1016/j.jpowsour.2014.04.014 | por |
dc.subject.wos | Science & Technology | por |
sdum.journal | Journal of Power Sources | por |
Aparece nas coleções: | CDF - FCD - Artigos/Papers (with refereeing) |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
---|---|---|---|---|
PVDF-HFP.pdf Acesso restrito! | PVDF-HFP | 910,66 kB | Adobe PDF | Ver/Abrir |