Journal of Physical Chemistry Letters
Journal of Physical Chemistry Letters
5 years ago

Dimensionality-Dependent Electrochemical Kinetics at the Single-Layer Graphene–Electrolyte Interface

Dimensionality-Dependent Electrochemical Kinetics at the Single-Layer Graphene–Electrolyte Interface
B. Marin, P. R. Bandaru, A. Zaretski, R. Narayanan, H. Yamada
The theories to describe the rate at which electrochemical reactions proceed, to date, do not consider explicitly the dimensionality or the discreteness and occupancy of the energy levels of the electrodes. We show experimentally that such quantum mechanical aspects are important for dimensionally confined nanostructured materials and yield unusual variation of the kinetic rate constants with applied voltage in single-layer graphene. The observed divergence from conventional electrokinetics was ascribed to the linear energy dispersion as well as a nonzero density of states at the Dirac point in the graphene. The obtained results justify the use of density of states-based rate constants and considerably add to Marcus–Hush–Chidsey kinetics.

Publisher URL: http://dx.doi.org/10.1021/acs.jpclett.7b01688

DOI: 10.1021/acs.jpclett.7b01688

You might also like
Discover & Discuss Important Research

Keeping up-to-date with research can feel impossible, with papers being published faster than you'll ever be able to read them. That's where Researcher comes in: we're simplifying discovery and making important discussions happen. With over 19,000 sources, including peer-reviewed journals, preprints, blogs, universities, podcasts and Live events across 10 research areas, you'll never miss what's important to you. It's like social media, but better. Oh, and we should mention - it's free.

  • Download from Google Play
  • Download from App Store
  • Download from AppInChina

Researcher displays publicly available abstracts and doesn’t host any full article content. If the content is open access, we will direct clicks from the abstracts to the publisher website and display the PDF copy on our platform. Clicks to view the full text will be directed to the publisher website, where only users with subscriptions or access through their institution are able to view the full article.