β-cyclodextrin and adamantane polyacrylic acid copolymers as supramolecular binder for silicon anodes: N-methylpyrrolidone or water for preparing the slurries?

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dc.contributor.authorOrtiz, M. G.
dc.contributor.authorSanservino, M. A.
dc.contributor.authorVisintin, A.
dc.contributor.authorPizarro, G. del C.
dc.contributor.authorTundidor-Camba, M. V.
dc.contributor.authorSchott, E.
dc.contributor.authorSepulveda, A.
dc.contributor.authorZuniga, C.
dc.contributor.authorOyarzun, D. P.
dc.contributor.authorMartin-Trasancos, R.
dc.date.accessioned2025-01-20T17:09:19Z
dc.date.available2025-01-20T17:09:19Z
dc.date.issued2024
dc.description.abstractSilicon is a promising material for anodes in future generations of LIBs. However, its volume changes during the lithiation/delithiation process that degrades battery performance, making it an impractical alternative. To mitigate this issue, we have found a viable alternate solution, which is the preparation of adamantane-polyacrylic acid (AdEN-AA) and beta-cyclodextrin-polyacrylic acid (beta CD6A-AA) polymers as supramolecular binders. The advantage of these binders is that polymers leverage host-guest interactions. To carry out this research, we prepared the anode materials in water and in NMP, and then we studied their capacity to crosslink and gel. Additionally, we examined the extent of the supramolecular interaction vs. hydrogen bond. Thermogravimetric analysis showed that the thermal stability of the mixture of complementary polymer increased in the following order: AdEN-AA/beta CD6A-AA in NMP < beta CD6A-AA/PAA < AdEN-AA/beta CD6A-AA, with the latter two in water. Accordingly, the anode material prepared in water shows the highest stability, retaining capacities of over 1000 mAhg(-1) after 90 cycles vs. 279 mAhg-1 of the electrode prepared in NMP. The results agreed with the SEM micrographs of the anode material, in which the slurry prepared in water showed better integrity of the silicon nanoparticles and of solid electrolyte interphase than the slurry prepared in NMP.
dc.description.funderAgencia Nacional de Investigacion Desarrollo
dc.fuente.origenWOS
dc.identifier.doi10.1016/j.carpta.2023.100414
dc.identifier.issn2666-8939
dc.identifier.urihttps://doi.org/10.1016/j.carpta.2023.100414
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/91032
dc.identifier.wosidWOS:001155384600001
dc.language.isoen
dc.revistaCarbohydrate polymer technologies and applications
dc.rightsacceso restringido
dc.subjectCarbohydrate-containing polymer binders
dc.subjectSupramolecular crosslinking
dc.subjectSilicon anodes
dc.subjectEnergy storage
dc.subject.ods11 Sustainable Cities and Communities
dc.subject.odspa11 Ciudades y comunidades sostenibles
dc.titleβ-cyclodextrin and adamantane polyacrylic acid copolymers as supramolecular binder for silicon anodes: N-methylpyrrolidone or water for preparing the slurries?
dc.typeartículo
dc.volumen7
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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