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Imidazolium and picolinium-based electrolytes for electrochemical reduction of CO2 at high pressure

2022-03Journal article Open access
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dc.contributor.authorMessias, Sofia
dc.contributor.authorPaz, Vitória
dc.contributor.authorCruz, Hugo
dc.contributor.authorRangel, C. M.
dc.contributor.authorBranco, Luis C
dc.contributor.authorMachado, Ana
dc.date.accessioned2022-10-26T15:18:08Z
dc.date.available2022-10-26T15:18:08Z
dc.date.issued2022-03
dc.description.abstractABSTRACT: Ionic liquids (ILs) have been considered among one of the most promising materials under investigation for integration of CO2 capture and electrochemical reduction (ECR). In the design of an IL-based electrolyte that can be employed industrially, the understanding of the influence of IL structure on ECR was considered essential. In this context, electrolytes with trifluoromethanosulfonate (OTf) anion were investigated as aqueous electrolytes for electrochemical reduction of CO2 at high pressure and near room temperature with zinc electrodes. The effect of replacing the 1-ethyl-3-methyl-imidazolium cation [EMIM] by 1-ethyl-3-picolinium [C2(3)pic] and by 1-ethyl-4-picolinium [C2(4)pic] cations was studied. The use of picolinium-based electrolytes in ECR is for the first time reported. A high-pressure single compartment test bed was used for electrolyte screening. Carbon monoxide productivities and selectivities were determined for the several electrolytes with different water contents. The electrolytes were characterized by cyclic voltammetry and electrochemical impedance spectroscopy. Electrolyte conductivities and diffusion coefficients were estimated. The effect of the cations is complex as it affects conductivity, double layer structure, reaction reversibility and even the ionic liquid physical state. Notwithstanding, it is possible to tune these properties to achieve similar CO productions with reduced IL amounts, considering the nature of the cation and the water content, leading to the design of more cost effective electrolytes for efficient ECR process.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationMessias, Sofia... [et.al.] - Imidazolium and picolinium-based electrolytes for electrochemical reduction of CO2 at high pressure. In: Energy Advances, 2022, vol. 5, p. 277-286pt_PT
dc.identifier.doi10.1039/d2ya00001fpt_PT
dc.identifier.issn2753-1457
dc.identifier.urihttp://hdl.handle.net/10400.9/3924
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherRoyal Society of Chemistrypt_PT
dc.relationPOCI01-0145-FEDER-016387pt_PT
dc.relationSunlight driven carbon-dioxide reduction: Hybrid catalytic systems consisting of molecular catalysts and light-harvesting Quantum-dots and semiconductors
dc.relationUnderstanding CO2 electro-reduction in porous materials
dc.relationNational Research Infrastructure in Solar Energy Concentration
dc.relation.publisherversionhttps://doi.org/10.1039/d2ya00001fpt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectIonic liquidspt_PT
dc.subjectElectrolytespt_PT
dc.subjectElectrochemical reductionpt_PT
dc.subjectCarbon dioxidept_PT
dc.subjectEnergy conversionpt_PT
dc.titleImidazolium and picolinium-based electrolytes for electrochemical reduction of CO2 at high pressurept_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleSunlight driven carbon-dioxide reduction: Hybrid catalytic systems consisting of molecular catalysts and light-harvesting Quantum-dots and semiconductors
oaire.awardTitleUnderstanding CO2 electro-reduction in porous materials
oaire.awardTitleNational Research Infrastructure in Solar Energy Concentration
oaire.awardURIinfo:eu-repo/grantAgreement/EC/H2020/745604/EU
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/3599-PPCDT/PTDC%2FEQU-EPQ%2F2195%2F2021/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/9444 - RNIIIE/PINFRA%2F22113%2F2016/PT
oaire.citation.endPage286pt_PT
oaire.citation.startPage277pt_PT
oaire.citation.titleEnergy Advancespt_PT
oaire.citation.volume5pt_PT
oaire.fundingStreamH2020
oaire.fundingStream3599-PPCDT
oaire.fundingStream9444 - RNIIIE
person.familyNameCruz
person.familyNameRangel
person.familyNameBranco
person.familyNameMachado
person.givenNameHugo
person.givenNameCarmen M.
person.givenNameLuis
person.givenNameAna
person.identifier1155437
person.identifier1702931
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person.identifier.orcid0000-0002-1047-7342
person.identifier.orcid0000-0001-7996-8142
person.identifier.orcid0000-0003-2520-1151
person.identifier.orcid0000-0002-7432-8725
person.identifier.ridL-2407-2014
person.identifier.ridD-5477-2011
person.identifier.ridC-6426-2013
person.identifier.scopus-author-id24170848300
person.identifier.scopus-author-id7006108156
person.identifier.scopus-author-id7006900650
project.funder.identifierhttp://doi.org/10.13039/501100008530
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameEuropean Commission
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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