Yu, Z.; Si, C.; Escobar-Bedia, FJ.; Lagrow, AP.; Xu, J.; Sabater Picot, MJ.; Amorim, I.... (2022). Bifunctional atomically dispersed ruthenium electrocatalysts for efficient bipolar membrane water electrolysis. Inorganic Chemistry Frontiers (Online). 9(16):4142-4150. https://doi.org/10.1039/d2qi00892k
Por favor, use este identificador para citar o enlazar este ítem: http://hdl.handle.net/10251/201961
Title:
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Bifunctional atomically dispersed ruthenium electrocatalysts for efficient bipolar membrane water electrolysis
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Author:
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Yu, Zhipeng
Si, Chaowei
Escobar-Bedia, Francisco Javier
LaGrow, Alec P.
Xu, Junyuan
Sabater Picot, Mª José
Amorim, Isilda
Araujo, Ana
Sousa, Juliana P. S.
Meng, Lijian
Faria, Joaquim Luis
Concepción Heydorn, Patricia
Li, Bo
Liu, Lifeng
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UPV Unit:
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Universitat Politècnica de València. Instituto Universitario Mixto de Tecnología Química - Institut Universitari Mixt de Tecnologia Química
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Issued date:
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Abstract:
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[EN] Atomically dispersed catalysts (ADCs) have recently drawn considerable interest for use in water electrolysis to produce hydrogen, because they allow for maximal utilization of metal species, particularly the expensive ...[+]
[EN] Atomically dispersed catalysts (ADCs) have recently drawn considerable interest for use in water electrolysis to produce hydrogen, because they allow for maximal utilization of metal species, particularly the expensive and scarce platinum group metals. Herein, we report the electrocatalytic performance of atomically dispersed ruthenium catalysts (Ru ADCs) with ultralow Ru loading (0.2 wt%). The as-obtained Ru ADCs (Ru (0.2)-NC) are active for both hydrogen evolution reaction (HER) and oxygen evolution reaction (OER), which only require a low overpotential (eta) of 47.1 and 72.8 mV to deliver 10 mA cm(-2) for HER in 0.5 M H2SO4 and 1.0 M KOH, respectively, and of 300 mV for OER in 1.0 M KOH, showing favorable bifunctionality. Density functional theory (DFT) calculations reveal that the Ru-N bonding plays an important role in lowering the energy barrier of the reactions, boosting the HER and OER activities. Furthermore, the bipolar membrane (BPM) water electrolysis using the bifunctional Ru (0.2)-NC as both HER and OER catalysts can afford 10 mA cm(-2) under a low cell voltage of only 0.89 V, and does not show any performance decay upon 100 h continuous operation, showing great potential for energy-saving hydrogen production.
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Copyrigths:
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Reserva de todos los derechos
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Source:
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Inorganic Chemistry Frontiers (Online). (eissn:
2052-1553
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DOI:
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10.1039/d2qi00892k
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Publisher:
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The Royal Society of Chemistry
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Publisher version:
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https://doi.org/10.1039/d2qi00892k
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Project ID:
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info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/LA%2FP%2F0045%2F2020/PT
...[+]
info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/LA%2FP%2F0045%2F2020/PT
info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F50020%2F2020/PT
info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDP%2F50020%2F2020/PT
info:eu-repo/grantAgreement/CSC//20180510014/
info:eu-repo/grantAgreement/CSC//201806150015/
info:eu-repo/grantAgreement/ANI//POCI-01-0247-FEDER-046109//Baterias 2030/
info:eu-repo/grantAgreement/ANI//POCI-01-0145-FEDER-029600//2DMAT4FUEL - Two-Dimensional Materials for Carbon Dioxide Separation and Conversion/
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Thanks:
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L. L. acknowledges the financial support from the National Innovation Agency of Portugal through the Mobilizador Programme (Baterias 2030, Grant No. POCI-01-0247-FEDER-046109). B. L. acknowledges the Natural Science ...[+]
L. L. acknowledges the financial support from the National Innovation Agency of Portugal through the Mobilizador Programme (Baterias 2030, Grant No. POCI-01-0247-FEDER-046109). B. L. acknowledges the Natural Science Foundation of LiaoNing Province, China (Grant No. 20180510014) for funding. Z. P. Y. is grateful for the scholarship offered by the China Scholarship Council (Grant No. 201806150015). This work was also in part financially supported by: LA/P/0045/2020 (ALiCE), UIDB/50020/2020 and UIDP/50020/2020 (LSRE-LCM) funded by national funds through FCT/MCTES (PIDDAC); project 2DMAT4FUEL (POCI-01-0145-FEDER-029600 - COMPETE2020 - FCT/MCTES - PIDDAC, Portugal). In addition, this work was carried out in part through the use of the INL Advanced Electron Microscopy, Imaging and Spectroscopy (AEMIS) Facility.
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Type:
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Artículo
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