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dc.contributor.authorUrbain, Félix
dc.contributor.authorTang, Pengyi
dc.contributor.authorCarretero González, Nina Maga
dc.contributor.authorAndreu, Teresa
dc.contributor.authorGerling Sarabia, Luis Guillermo
dc.contributor.authorVoz Sánchez, Cristóbal
dc.contributor.authorArbiol Cobos, Jordi
dc.contributor.authorMorante Lleonart, Joan Ramon
dc.contributor.otherInstitut de Recerca en Energía de Catalunya
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Ciència dels Materials i Enginyeria Metal·lúrgica
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria Electrònica
dc.date.accessioned2017-11-24T07:36:30Z
dc.date.available2018-10-02T00:30:40Z
dc.date.issued2017-10
dc.identifier.citationUrbain, F., Tang, P., Carretero, N.M., Andreu, T., Gerling Sarabia, L., Voz, C., Arbiol, J., Morante, J. A prototype reactor for highly selective solar-driven CO2 reduction to synthesis gas using nanosized earth-abundant catalysts and silicon photovoltaics. "Energy and environmental science", Octubre 2017, vol. 10, p. 2256-2266.
dc.identifier.issn1754-5692
dc.identifier.urihttp://hdl.handle.net/2117/111141
dc.description.abstractThe conversion of carbon dioxide (CO2) into value-added chemicals and fuels, preferably using renewable energy and earth-abundant materials, is considered a key priority for future energy research. In this work, a bias-free reactor device for the solar-driven conversion of CO2 to synthesis gas (syngas) has been developed. The integrated fluidic device consists of a cathode made of copper foam coated with low-cost nanosized zinc flakes as catalyst to perform the CO2 reduction reaction (CO2RR) to syngas, an adapted silicon heterojunction solar cell structure as photoanode with nickel foam as catalyst to facilitate the oxygen evolution reaction (OER), and a bipolar membrane separating the respective catholyte and anolyte compartments. The membrane allows for the operation of the catholyte and anolyte at different pH values. Stable and tunable hydrogen-to-carbon monoxide (H2:CO) ratios between 5 and 0.5 along with high CO Faradaic efficiencies of up to 85% and CO current densities of 39.4 mA cm-2 have been demonstrated. Under photoelectrolysis conditions, the photovoltage of the photoanode was varied between 0.6 V and 2.4 V by connecting up to four heterojunction solar cells in series, and thus reducing the overall cell voltage solely by solar energy utilization. Bias-free operation of the integrated device has been achieved under ambient conditions with active areas for CO2RR and OER, respectively, of 10 cm2. An operation current density of 5.0 mA cm-2 was measured under 100 mW cm-2 illumination of the complete device, which corresponds to a solar-to-syngas conversion efficiency of 4.3%.
dc.format.extent11 p.
dc.language.isoeng
dc.subjectÀrees temàtiques de la UPC::Energies
dc.subject.lcshSolar cells
dc.subject.lcshCatalysts
dc.subject.lcshCarbon dioxide
dc.subject.lcshCarbon monoxide
dc.titleA prototype reactor for highly selective solar-driven CO2 reduction to synthesis gas using nanosized earth-abundant catalysts and silicon photovoltaics
dc.typeArticle
dc.subject.lemacCèl·lules solars
dc.subject.lemacCatalitzadors
dc.subject.lemacMonòxid de carboni
dc.contributor.groupUniversitat Politècnica de Catalunya. MNT - Grup de Recerca en Micro i Nanotecnologies
dc.identifier.doi10.1039/C7EE01747B
dc.relation.publisherversionhttp://pubs.rsc.org/en/Content/ArticleLanding/2017/EE/C7EE01747B#!divAbstract
dc.rights.accessOpen Access
drac.iddocument21591432
dc.description.versionPostprint (author's final draft)
upcommons.citation.authorUrbain, F., Tang, P., Carretero, N.M., Andreu, T., Gerling Sarabia, L., Voz, C., Arbiol, J., Morante, J.
upcommons.citation.publishedtrue
upcommons.citation.publicationNameEnergy and environmental science
upcommons.citation.volume10
upcommons.citation.startingPage2256
upcommons.citation.endingPage2266


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