Hydrogen evolution in the presence of CO2 in an aqueous solution during electrochemical reduction

Yangchun Lan, Sichao Ma, Paul J.A. Kenis, Jiaxing Lu

Research output: Contribution to journalArticlepeer-review

Abstract

This study investigated the electroanalytic behaviors of different Cu(core)/CuO(shell) catalyst loadings in a standard three-electrode cell in an aqueous solution. Transformations between Cu, Cu(I), and CuO as a function of applied potential were observed. Electrochemical reduction in the presence of CO2 was conducted in a flow reactor. Hydrogen evolution occurred during electrochemical reaction. The H2 Faradaic efficiency was between 40% and 65%. Differential equations were used to model the hydrogen evolution reaction. The models were able to describe the electrochemical reduction that occurred. According to kinetic analysis, the H2 rate constant was not affected by increased catalyst loadings.

Original languageEnglish (US)
Pages (from-to)8097-8105
Number of pages9
JournalInternational Journal of Electrochemical Science
Volume9
Issue number12
StatePublished - 2014

Keywords

  • Aqueous solution
  • Catalysis
  • CO
  • Cu(core)/CuO(shell) nanopowder
  • Electrochemical reduction
  • Hydrogen evolution

Fingerprint

Dive into the research topics of 'Hydrogen evolution in the presence of CO2 in an aqueous solution during electrochemical reduction'. Together they form a unique fingerprint.

Cite this