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dc.contributor.author
Para, Maria Laura
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dc.contributor.author
Versaci, Daniele
dc.contributor.author
Amici, Julia
dc.contributor.author
Caballero, María Florencia
dc.contributor.author
Cozzarin, Melina Vanessa
dc.contributor.author
Francia, Carlotta
dc.contributor.author
Bodoardo, Silvia
dc.contributor.author
Gamba, Martina
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dc.date.available
2021-07-30T14:37:10Z
dc.date.issued
2021-01
dc.identifier.citation
Para, Maria Laura; Versaci, Daniele; Amici, Julia; Caballero, María Florencia; Cozzarin, Melina Vanessa; et al.; Synthesis and characterization of montmorillonite/polyaniline composites and its usage to modify a commercial separator; Elsevier Science SA; Journal of Electroanalytical Chemistry; 880; 114876; 1-2021; 1-10
dc.identifier.issn
1572-6657
dc.identifier.uri
http://hdl.handle.net/11336/137448
dc.description.abstract
Composites of montmorillonite (MMT) and polyaniline (PANI) were synthetized through a facile and inexpensive method. Two samples with different MMT:PANI ratios were studied and deeply characterized by XRD, TG, zeta potential, FTIR and XPS measurements. On one hand, the sample with ratio MMT:PANI = 87:13 was an intercalated composite, were polyaniline resides between the inorganic layers of the clay at a regular distance. On the other hand, the sample with ratio MMT:PANI = 12:88 was an exfoliated composite, where the inorganic sheets are immersed in an amorphous polymeric matrix. FTIR and XRD results indicated that in both samples, the emeraldine form of polyaniline was obtained. The composites were used to modify -by dr. blade technique- a commercial separator for lithium-ion batteries (LIBs) with the aim of increasing its wettability, ionic conductivity and electrochemical performance. The three-dimensional and multilayered network structure of the MMT/PANI composites led to an enhancement of the electrolyte uptake capacity (from 32% in bare separator to 137% and 168% for MMT/PANI_87/13 and MMT/PANI_12/88 modified separators, respectively, after 3 h). The presence of the coating membrane also led to an increase of the ionic conductivity by one order of magnitude in the modified separators respect to the unmodified one. These coated and non-coated separators were used to assemble full cells with LiNi1.5Mn0.5O4 as cathode active material. The capacity fade after 200 cycles was 20% lower in the cell with MMT/PANI_12/88 membrane in comparison with the bare separator. The enhancement of the electrochemical performance of the cells with the coated separator suggests that is a promising strategy to be used in LIBs.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier Science SA
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dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
CLAY/POLYMER COMPOSITE
dc.subject
LITHIUM ION BATTERY
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MODIFIED SEPARATOR
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MONTMORILLONITE
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POLYANILINE
dc.subject.classification
Físico-Química, Ciencia de los Polímeros, Electroquímica
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dc.subject.classification
Ciencias Químicas
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Synthesis and characterization of montmorillonite/polyaniline composites and its usage to modify a commercial separator
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2021-07-29T11:42:59Z
dc.journal.volume
880
dc.journal.number
114876
dc.journal.pagination
1-10
dc.journal.pais
Países Bajos
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dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Para, Maria Laura. Politecnico di Torino; Italia
dc.description.fil
Fil: Versaci, Daniele. Politecnico di Torino; Italia
dc.description.fil
Fil: Amici, Julia. Politecnico di Torino; Italia
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Fil: Caballero, María Florencia. Politecnico di Torino; Italia
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Fil: Cozzarin, Melina Vanessa. YPF - Tecnología; Argentina
dc.description.fil
Fil: Francia, Carlotta. Politecnico di Torino; Italia
dc.description.fil
Fil: Bodoardo, Silvia. Politecnico di Torino; Italia
dc.description.fil
Fil: Gamba, Martina. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Centro de Tecnología de Recursos Minerales y Cerámica. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Tecnología de Recursos Minerales y Cerámica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; Argentina
dc.journal.title
Journal of Electroanalytical Chemistry
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://linkinghub.elsevier.com/retrieve/pii/S157266572031105X
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.jelechem.2020.114876
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