University Library
  • Login
A gateway to Melbourne's research publications
Minerva Access is the University's Institutional Repository. It aims to collect, preserve, and showcase the intellectual output of staff and students of the University of Melbourne for a global audience.
View Item 
  • Minerva Access
  • Engineering
  • Mechanical Engineering
  • Mechanical Engineering - Research Publications
  • View Item
  • Minerva Access
  • Engineering
  • Mechanical Engineering
  • Mechanical Engineering - Research Publications
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

    Oxygen evolution reaction dynamics monitored by an individual nanosheet-based electronic circuit

    Thumbnail
    Download
    published version (2.535Mb)

    Citations
    Scopus
    Web of Science
    Altmetric
    17
    23
    Author
    Wang, P; Yan, M; Meng, J; Jiang, G; Qu, L; Pan, X; Liu, JZ; Mai, L
    Date
    2017-09-21
    Source Title
    Nature Communications
    Publisher
    NATURE PUBLISHING GROUP
    University of Melbourne Author/s
    Liu, Zhe
    Affiliation
    Mechanical Engineering
    Metadata
    Show full item record
    Document Type
    Journal Article
    Citations
    Wang, P., Yan, M., Meng, J., Jiang, G., Qu, L., Pan, X., Liu, J. Z. & Mai, L. (2017). Oxygen evolution reaction dynamics monitored by an individual nanosheet-based electronic circuit. NATURE COMMUNICATIONS, 8 (1), https://doi.org/10.1038/s41467-017-00778-z.
    Access Status
    Open Access
    URI
    http://hdl.handle.net/11343/257252
    DOI
    10.1038/s41467-017-00778-z
    Abstract
    The oxygen evolution reaction involves complex interplay among electrolyte, solid catalyst, and gas-phase and liquid-phase reactants and products. Monitoring catalysis interfaces between catalyst and electrolyte can provide valuable insights into catalytic ability. But it is a challenging task due to the additive solid supports in traditional measurement. Here we design a nanodevice platform and combine on-chip electrochemical impedance spectroscopy measurement, temporary I-V measurement of an individual nanosheet, and molecular dynamic calculations to provide a direct way for nanoscale catalytic diagnosis. By removing O2 in electrolyte, a dramatic decrease in Tafel slope of over 20% and early onset potential of 1.344 V vs. reversible hydrogen electrode are achieved. Our studies reveal that O2 reduces hydroxyl ion density at catalyst interface, resulting in poor kinetics and negative catalytic performance. The obtained in-depth understanding could provide valuable clues for catalysis system design. Our method could also be useful to analyze other catalytic processes.Electrocatalysis offers important opportunities for clean fuel production, but uncovering the chemistry at the electrode surface remains a challenge. Here, the authors exploit a single-nanosheet electrode to perform in-situ measurements of water oxidation electrocatalysis and reveal a crucial interaction with oxygen.

    Export Reference in RIS Format     

    Endnote

    • Click on "Export Reference in RIS Format" and choose "open with... Endnote".

    Refworks

    • Click on "Export Reference in RIS Format". Login to Refworks, go to References => Import References


    Collections
    • Minerva Elements Records [45770]
    • Mechanical Engineering - Research Publications [373]
    Minerva AccessDepositing Your Work (for University of Melbourne Staff and Students)NewsFAQs

    BrowseCommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsThis CollectionBy Issue DateAuthorsTitlesSubjects
    My AccountLoginRegister
    StatisticsMost Popular ItemsStatistics by CountryMost Popular Authors