Boosting the Performance of the Nickel Anode in the Oxygen Evolution Reaction by Simple Electrochemical Activation

Handle URI:
http://hdl.handle.net/10754/623801
Title:
Boosting the Performance of the Nickel Anode in the Oxygen Evolution Reaction by Simple Electrochemical Activation
Authors:
Shinagawa, Tatsuya ( 0000-0002-5240-7342 ) ; Ng, Marcus Tze-Kiat; Takanabe, Kazuhiro ( 0000-0001-5374-9451 )
Abstract:
The development of cost-effective and active water-splitting electrocatalysts that work at mild pH is an essential step towards the realization of sustainable energy and material circulation in our society. Its success requires a drastic improvement in the kinetics of the anodic half-reaction of the oxygen evolution reaction (OER), which determines the overall system efficiency to a large extent. A simple electrochemical protocol has been developed to activate Ni electrodes, by which a stable NiOOH phase was formed, which could weakly bind to alkali-metal cations. The electrochemically activated (ECA) Ni electrode reached a current of 10 mA at <1.40 V vs. the reversible hydrogen electrode (RHE) at practical operation temperatures (>75 °C) and a mild pH of ca. 10 with excellent stability (>24 h), greatly surpassing that of the state-of-the-art NiFeOx electrodes under analogous conditions. Water electrolysis was demonstrated with ECA-Ni and NiMo, which required an iR-free overall voltage of only 1.44 V to reach 10 mA cmgeo(-2) .
KAUST Department:
KAUST Catalysis Center (KCC); Physical Sciences and Engineering (PSE) Division
Citation:
Shinagawa T, Ng MT-K, Takanabe K (2017) Boosting the Performance of the Nickel Anode in the Oxygen Evolution Reaction by Simple Electrochemical Activation. Angewandte Chemie International Edition 56: 5061–5065. Available: http://dx.doi.org/10.1002/anie.201701642.
Publisher:
Wiley-Blackwell
Journal:
Angewandte Chemie International Edition
Issue Date:
27-Mar-2017
DOI:
10.1002/anie.201701642; 10.1002/ange.201701642
Type:
Article
ISSN:
1433-7851
Sponsors:
The research reported in this work was supported by the King Abdullah University of Science and Technology (KAUST). We thank L. Stegenburga for the Raman and SEM measurements, Dr. N. Wei for the cross-sectional SEM images, Dr. D. Zhang for the TEM images, Dr. N. Wehbe for the SIMS measurement, and Dr. M. N. Hedhili for the XPS depth-profile measurements (all conducted at KAUST).
Additional Links:
http://onlinelibrary.wiley.com/doi/10.1002/anie.201701642/full
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division; KAUST Catalysis Center (KCC)

Full metadata record

DC FieldValue Language
dc.contributor.authorShinagawa, Tatsuyaen
dc.contributor.authorNg, Marcus Tze-Kiaten
dc.contributor.authorTakanabe, Kazuhiroen
dc.date.accessioned2017-05-31T11:23:06Z-
dc.date.available2017-05-31T11:23:06Z-
dc.date.issued2017-03-27en
dc.identifier.citationShinagawa T, Ng MT-K, Takanabe K (2017) Boosting the Performance of the Nickel Anode in the Oxygen Evolution Reaction by Simple Electrochemical Activation. Angewandte Chemie International Edition 56: 5061–5065. Available: http://dx.doi.org/10.1002/anie.201701642.en
dc.identifier.issn1433-7851en
dc.identifier.doi10.1002/anie.201701642en
dc.identifier.doi10.1002/ange.201701642en
dc.identifier.urihttp://hdl.handle.net/10754/623801-
dc.description.abstractThe development of cost-effective and active water-splitting electrocatalysts that work at mild pH is an essential step towards the realization of sustainable energy and material circulation in our society. Its success requires a drastic improvement in the kinetics of the anodic half-reaction of the oxygen evolution reaction (OER), which determines the overall system efficiency to a large extent. A simple electrochemical protocol has been developed to activate Ni electrodes, by which a stable NiOOH phase was formed, which could weakly bind to alkali-metal cations. The electrochemically activated (ECA) Ni electrode reached a current of 10 mA at <1.40 V vs. the reversible hydrogen electrode (RHE) at practical operation temperatures (>75 °C) and a mild pH of ca. 10 with excellent stability (>24 h), greatly surpassing that of the state-of-the-art NiFeOx electrodes under analogous conditions. Water electrolysis was demonstrated with ECA-Ni and NiMo, which required an iR-free overall voltage of only 1.44 V to reach 10 mA cmgeo(-2) .en
dc.description.sponsorshipThe research reported in this work was supported by the King Abdullah University of Science and Technology (KAUST). We thank L. Stegenburga for the Raman and SEM measurements, Dr. N. Wei for the cross-sectional SEM images, Dr. D. Zhang for the TEM images, Dr. N. Wehbe for the SIMS measurement, and Dr. M. N. Hedhili for the XPS depth-profile measurements (all conducted at KAUST).en
dc.publisherWiley-Blackwellen
dc.relation.urlhttp://onlinelibrary.wiley.com/doi/10.1002/anie.201701642/fullen
dc.subjectEnergy conversionen
dc.subjectOxygen evolutionen
dc.subjectElectrochemistryen
dc.subjectHeterogeneous Catalysisen
dc.subjectWater Splittingen
dc.titleBoosting the Performance of the Nickel Anode in the Oxygen Evolution Reaction by Simple Electrochemical Activationen
dc.typeArticleen
dc.contributor.departmentKAUST Catalysis Center (KCC)en
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.identifier.journalAngewandte Chemie International Editionen
kaust.authorShinagawa, Tatsuyaen
kaust.authorNg, Marcus Tze-Kiaten
kaust.authorTakanabe, Kazuhiroen
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