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Electrochromic Device Composed of a Di-Urethanesil Electrolyte Incorporating Lithium Triflate and 1-Butyl-3-Methylimidazolium Chloride

2020Journal article Open access
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dc.contributor.authorGonçalves, Maria Cristina
dc.contributor.authorPereira, Rui F. P.
dc.contributor.authorAlves, Raquel
dc.contributor.authorNunes, Sílvia C.
dc.contributor.authorFernandes, Mariana
dc.contributor.authorGonçalves, Helena M R
dc.contributor.authorPereira, Sónia
dc.contributor.authorSilva, M. Manuela
dc.contributor.authorFortunato, Elvira
dc.contributor.authorRego, Rosa
dc.contributor.authorZea Bermudez, Verónica de
dc.date.accessioned2022-01-12T15:19:26Z
dc.date.available2022-01-12T15:19:26Z
dc.date.issued2020
dc.description.abstractA di-urethane cross-linked poly(oxyethylene)/silica hybrid matrix [di-urethanesil, d-Ut(600)], synthesized by the sol-gel process, was doped with lithium triflate (LiCF3SO3) and the 1-butyl-3-methylimidazolium chloride ([Bmim]Cl) ionic liquid. The as-produced xerogel film is amorphous, transparent, flexible, homogeneous, hydrophilic, and has low nanoscale surface roughness. It exhibits an ionic conductivity of 3.64 × 10–6 and 5.00 × 10–4 S cm–1 at 21 and 100°C, respectively. This material was successfully tested as electrolyte in an electrochromic device (ECD) with the glass/ITO/a-WO3/d-Ut(600)10LiCF3SO3[Bmim]Cl/c-NiO/ITO/glass configuration, where a-WO3 and c-NiO stand for amorphous tungsten oxide and crystalline nickel oxide, respectively. The device demonstrated attractive electro-optical performance: fast response times (1–2 s for coloring and 50 s for bleaching), good optical memory [loss of transmittance (T) of only 41% after 3 months, at 555 nm], four mode modulation [bright mode (+3.0 V, T = 77% at 555 nm), semi-bright mode (−1.0 V, T = 60% at 555 nm), dark mode (−1.5 V, T = 38 % at 555 nm), and very dark mode (−2.0 V, T = 11% and −2.5 V, T = 7% at 555 nm)], excellent cycling stability denoting improvement with time, and high coloration efficiency [CEin = −6727 cm2 C–1 (32th cycle) and CEout = +2794 cm2 C–1 (480th cycle), at 555 nm].pt_PT
dc.description.sponsorshipThe authors are grateful to Fundação para a Ciência e a Tecnologia (FCT) and when applicable by FEDER under the PT2020 Partnership Agreement for financial support under contracts PEst-OE/SAU/UI0709/2014, UID/Multi/00709/2013, UID/QUI/00686/2016, UID/QUI/00686/2018, UID/QUI/00686/2019, PEst-OE/QUI/UI0616/2016, FCOMP-01-0124-FEDER-037271, UID/CTM/50011/2013, LUMECD project (POCI-01-0145-FEDER-016884 and PTDC/CTM-NAN/0956/2014), UniRCell project (SAICTPAC/0032/2015 and POCI-01-0145-FEDER-016422). RP and SN acknowledge FCT-MCTES for grants (SFRH/BPD/87759/2012 and LUMECD, respectively). RP thanks FCT-UM for the contracts in the scope of Decreto-Lei 57/2016 and 57/2017. MF acknowledges FCT-UTAD for the contract in the scope of Decreto-Lei 57/2016 – Lei 57/2017. HG acknowledges projects POCI-01-0145-FEDER-030858 and PTDC/BTM-MAT/30858/2017 for financial support.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationElectrochromic Device Composed of a Di-Urethanesil Electrolyte Incorporating Lithium Triflate and 1-Butyl-3-Methylimidazolium Chloride Goncalves M.C., Pereira R.F.P., Alves R., Nunes S.C., Fernandes M., Goncalves H.M.R., Pereira S., (...), de Zea Bermudez V. (2020) Frontiers in Materials, 7 , art. no. 139pt_PT
dc.identifier.doi10.3389/fmats.2020.00139pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.22/19434
dc.language.isoengpt_PT
dc.publisherFrontierspt_PT
dc.relationUID/QUI/00686/2016pt_PT
dc.relationUID/QUI/00686/2018pt_PT
dc.relationPEst-OE/QUI/UI0616/2016pt_PT
dc.relationFCOMP-01-0124-FEDER-037271pt_PT
dc.relationChemistry Research Centre of the University of Minho
dc.relationPOCI-01-0145-FEDER-016884pt_PT
dc.relationPOCI-01-0145-FEDER-016422pt_PT
dc.relationLuminescent electrochromic devices incorporating organic/inorganic (bio)hybrid electrolytes
dc.relationUnitised regenerative fuel cell for efficient renewable energy supply: from materials to device
dc.relationCarbon Dots as effective agents in photodynamic therapy.
dc.relation.publisherversionhttps://www.frontiersin.org/articles/10.3389/fmats.2020.00139/fullpt_PT
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/pt_PT
dc.subjectDi-urethanesilpt_PT
dc.subjectSol-gelpt_PT
dc.subjectLihium triflatept_PT
dc.subject1-butyl-3-methylimidazolium chloridept_PT
dc.subjectElectrochromic devicept_PT
dc.titleElectrochromic Device Composed of a Di-Urethanesil Electrolyte Incorporating Lithium Triflate and 1-Butyl-3-Methylimidazolium Chloridept_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleChemistry Research Centre of the University of Minho
oaire.awardTitleLuminescent electrochromic devices incorporating organic/inorganic (bio)hybrid electrolytes
oaire.awardTitleUnitised regenerative fuel cell for efficient renewable energy supply: from materials to device
oaire.awardTitleCarbon Dots as effective agents in photodynamic therapy.
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/5876/PEst-OE%2FSAU%2FUI0709%2F2014/PT
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oaire.awardURIinfo:eu-repo/grantAgreement/FCT/9471 - RIDTI/PTDC%2FBTM-MAT%2F30858%2F2017/PT
oaire.citation.titleFrontiers in Materialspt_PT
oaire.citation.volume7pt_PT
oaire.fundingStream5876
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person.familyNameGonçalves
person.givenNameHelena
person.identifier.ciencia-id001B-0C41-0881
person.identifier.orcid0000-0001-6210-8736
person.identifier.ridAAC-5108-2020
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rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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