Jump to main content
Jump to site search

Issue 33, 2011
Previous Article Next Article

CuxCo3−xO4 (0 ≤ x < 1) nanoparticles for oxygen evolution in high performance alkaline exchange membrane water electrolysers

Author affiliations

Abstract

Cu incorporated Co3O4 (CuxCo3−xO4, 0 ≤ x < 1) nanoparticles were prepared using a thermal decomposition method. Properties of the CuxCo3−xO4, such as morphology, particle sizes, crystallite structure and cation distribution, were characterized with SEM, TEM, XRD and EDX. The CuxCo3−xO4 particles, with various x values, were found to be cubic spinel nanoparticles, with average size of 20–30 nm. Incorporation of Cu in the spinel lattice of Co3O4 shifted the Co3+/Co4+ redox peak as well as the onset point for OER to more negative potentials, which may be related to inversion of Cu2+ into the octahedral sites. Amongst all samples studied, Cu0.7Co2.3O4 was the most active for OER. The CuxCo3−xO4 electrodes exhibited satisfying stability during repetitive cyclic voltammetry. A membrane electrode assembly, using 3 mg cm−2 Cu0.7Co2.3O4 on the anode, demonstrated, in an alkaline membrane water electrolyser, a high current density performance of 1 A cm−2 at a voltage of 1.8 V in 1 mol dm−3 KOH at 25 °C.

Graphical abstract: CuxCo3−xO4 (0 ≤ x < 1) nanoparticles for oxygen evolution in high performance alkaline exchange membrane water electrolysers

Back to tab navigation
Please wait while Download options loads

Publication details

The article was received on 28 Mar 2011, accepted on 27 May 2011 and first published on 14 Jul 2011


Article type: Paper
DOI: 10.1039/C1JM11312G
Citation: J. Mater. Chem., 2011,21, 12344-12351
  •   Request permissions

    CuxCo3−xO4 (0 ≤ x < 1) nanoparticles for oxygen evolution in high performance alkaline exchange membrane water electrolysers

    X. Wu and K. Scott, J. Mater. Chem., 2011, 21, 12344
    DOI: 10.1039/C1JM11312G

Search articles by author