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Upscaling high activity oxygen evolution catalysts based on CoFe2O4 nanoparticles supported on nickel foam for power-to-gas electrochemical conversion with energy efficiencies above 80%
dc.contributor.author | Urbain, Félix |
dc.contributor.author | Du, Ruifeng |
dc.contributor.author | Tang, Pengyi |
dc.contributor.author | Smirnov, Vladimir |
dc.contributor.author | Andreu, Teresa |
dc.contributor.author | Finger, Friedhelm |
dc.contributor.author | Arbiol, Jordi |
dc.contributor.author | Cabot, Andreu |
dc.contributor.author | Morante Lleonart, Joan Ramon |
dc.contributor.other | Institut de Recerca en Energía de Catalunya |
dc.date.accessioned | 2020-02-28T11:34:02Z |
dc.date.available | 2021-12-15T01:31:02Z |
dc.date.issued | 2019-12-15 |
dc.identifier.citation | Urbain, F. [et al.]. Upscaling high activity oxygen evolution catalysts based on CoFe2O4 nanoparticles supported on nickel foam for power-to-gas electrochemical conversion with energy efficiencies above 80%. "Applied catalysis B. Environmental", 15 Desembre 2019, vol. 259, p. 118055:1-118055:10. |
dc.identifier.issn | 0926-3373 |
dc.identifier.uri | http://hdl.handle.net/2117/178878 |
dc.description.abstract | We investigate cobalt ferrite nanoparticles (NPs) supported on large-scale electrodes as oxygen evolution reaction (OER) catalysts. Colloidal CoFe2O4 NPs were loaded on low-cost and high surface area nickel foam (NF) scaffolds. The coating process was optimized for large electrode areas, ensuring a proper distribution of the NPs on the NF that allowed overcoming the electrical conductivity limitations of oxide NPs. We were able to produce CoFe2O4-coated NFs having 10¿cm2 geometric surface areas with overpotentials below 300¿mV for the OER at a current density of 50¿mA/cm2. Such impressively low overpotentials suggested using CoFe2O4 NP-based electrodes within a water electrolysis device. In this prototype device, stable operating currents up to 500¿mA at remarkably low cell-voltages of 1.62 and 1.53¿V, at ambient and 50¿°C electrolyte temperatures, respectively, were reached during operation periods of up to 50¿h. The high electrochemical energy efficiencies reached at 50¿mA/cm2, 75% and 81% respectively, rendered these devices particularly appealing to be combined with low-cost photovoltaic systems for bias-free hydrogen production. Therefore, CoFe2O4 NP-based electrolysers were coupled to low-cost thin-film silicon solar cells with 13% efficiency to complete a system that afforded solar-to-fuel efficiencies above 10%. |
dc.language.iso | eng |
dc.rights | Attribution-NonCommercial-NoDerivs 3.0 Spain |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/es/ |
dc.subject | Àrees temàtiques de la UPC::Enginyeria química::Química física::Electroquímica |
dc.subject.lcsh | Catalysis |
dc.subject.lcsh | Electrochemistry |
dc.subject.other | CoFe2O4 |
dc.subject.other | Colloidal |
dc.subject.other | OER |
dc.subject.other | Solar fuels |
dc.subject.other | Prototype |
dc.title | Upscaling high activity oxygen evolution catalysts based on CoFe2O4 nanoparticles supported on nickel foam for power-to-gas electrochemical conversion with energy efficiencies above 80% |
dc.type | Article |
dc.subject.lemac | Catàlisi |
dc.subject.lemac | Electroquímica |
dc.identifier.doi | 10.1016/j.apcatb.2019.118055 |
dc.description.peerreviewed | Peer Reviewed |
dc.relation.publisherversion | https://www.sciencedirect.com/science/article/abs/pii/S092633731930801X |
dc.rights.access | Open Access |
local.identifier.drac | 26738672 |
dc.description.version | Postprint (author's final draft) |
local.citation.author | Urbain, F.; Du, R.; Tang, P.; Smirnov, V.; Andreu, T.; Finger, F.; Arbiol, J.; Cabot, A.; Morante, J. |
local.citation.publicationName | Applied catalysis B. Environmental |
local.citation.volume | 259 |
local.citation.startingPage | 118055:1 |
local.citation.endingPage | 118055:10 |
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