Jump to main content
Jump to site search

Issue 42, 2018
Previous Article Next Article

Tracking the interfacial charge transfer behavior of hydrothermally synthesized ZnO nanostructures via complementary electrogravimetric methods

Author affiliations

Abstract

The mechanism of species fluxes during the charge–discharge process in a nanostructured ZnO electrode was studied by a combined methodology of electrochemical quartz-crystal microbalance (EQCM) and ac-electrogravimetry. Under the conditions of this study, anions (SO42−) possess the highest kinetics to be transferred at the electrode/electrolyte interface in the charge balance while cations (identified as Na+·5H2O and Na+) play the major role as charge carriers. Free H2O molecules present a sluggish behavior and their interfacial transfer occurs at a low scan rate or low frequencies. These findings shed light on the nature of ions and solvent participation in the charge balance of hydrothermally synthesized ZnO nanostructures directly grown on a QCM device. The combined methodology proposed herein provides dynamic and gravimetric analysis of interfacial charge transfer and can be extended to investigate other nanostructured metal oxide-based electrodes for energy storage.

Graphical abstract: Tracking the interfacial charge transfer behavior of hydrothermally synthesized ZnO nanostructures via complementary electrogravimetric methods

Back to tab navigation

Supplementary files

Publication details

The article was received on 07 Jun 2018, accepted on 05 Oct 2018 and first published on 08 Oct 2018


Article type: Paper
DOI: 10.1039/C8CP03593H
Citation: Phys. Chem. Chem. Phys., 2018,20, 27140-27148
  •   Request permissions

    Tracking the interfacial charge transfer behavior of hydrothermally synthesized ZnO nanostructures via complementary electrogravimetric methods

    W. Gao, H. Perrot and O. Sel, Phys. Chem. Chem. Phys., 2018, 20, 27140
    DOI: 10.1039/C8CP03593H

Search articles by author

Spotlight

Advertisements