Solution-Processed Ni-Based Nanocomposite Electrocatalysts: An Approach to Highly Efficient Electrochemical Water Splitting
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Metadatos
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INVESTIGACIONMetadatos
Título
Solution-Processed Ni-Based Nanocomposite Electrocatalysts: An Approach to Highly Efficient Electrochemical Water SplittingAutoría
Fecha de publicación
2021-05-10Editor
American Chemical SocietyISSN
2574-0962Cita bibliográfica
Noguera-Gómez, J.; García-Tecedor, M.; Sánchez-Royo, J. F.; Valencia Liñán, L. M.; de la Mata, M.; Herrera-Collado, M.; ; Molina, S. I.; Abargues, R.; Giménez, S. Solution-Processed Ni-Based Nanocomposite Electrocatalysts: An Approach to Highly Efficient Electrochemical Water Splitting. ACS Appl. Energy Mater. 2021, 4, 5, 5255–5264 DOI: 10.1021/acsaem.1c00776Tipo de documento
info:eu-repo/semantics/articleVersión de la editorial
https://pubs.acs.org/doi/full/10.1021/acsaem.1c00776Versión
info:eu-repo/semantics/publishedVersionPalabras clave / Materias
Resumen
In this study, we report an up-scalable and low-cost solution-processed method to in situ synthesize an earth-abundant non-stoichiometric NiOx-based electrocatalytic film for water oxidation. The catalytic activity ... [+]
In this study, we report an up-scalable and low-cost solution-processed method to in situ synthesize an earth-abundant non-stoichiometric NiOx-based electrocatalytic film for water oxidation. The catalytic activity was found to be inversely proportional to the baking temperature, which varied from 50 to 500 °C. We found the formation of a hybrid nanocomposite thin film of NiOx nanocrystals (<2 nm size) inside an acetate-based organic matrix at low temperatures (<200 °C). The defective and short-range structural order of the NiOx-based nanocomposite electrocatalysts, compatible with lattice stress, low electrical conductivity, and high density of catalytically active surface species, and higher Fe incorporation were responsible for the enhanced electrocatalytic activity. Our champion NiOx catalyst features a 358 mV overpotential at 10 mA cm–2 and more than 60 h of continuous operation without significant losses, which is a remarkable milestone for undoped NiOx electrocatalysts synthesized at nearly room temperature by a solution-processed up-scalable method. [-]
Publicado en
ACS Applied Energy Materials, 2021, vol. 4, no 5Entidad financiadora
Ministerio de Ciencia, Innovación y Universidades | Agencia Valenciana de la Innovacion (AVI)
Código del proyecto o subvención
TEC2017-86102-C2-1-R | ENE2017-85087-C3-1-R | RYC-2015-18349 | INNVAL10/18/032
Derechos de acceso
info:eu-repo/semantics/openAccess
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- INAM_Articles [521]