Electrochemical reduction of carbon dioxide using porous La 0.8Sr0.2CuO3 electrode

Jung Ryoel Kim, Hong Joo Lee, Jung Hoon Park

Research output: Contribution to journalArticlepeer-review

Abstract

La0.8Sr0.2CuO3 powder with the perovskite structure was prepared as electrode catalyst using citrate method. Porous electrode was made with as-prepared catalyst, carbon as supporter and polytetrafluoroethylene (PTFE) as hydrophobic binder. As results of potentiostatic electrolysis with potential of -1.5∼-2.5 V vs. Ag/AgCl in 0.1, 0.5 and 1.0 M KOH at 5 and 10 oC on the porous electrode, liquid products were methanol, ethanol, 2-propanol and 1, 2-butanol regardless reaction temperature, while gas products were methane, ethane and ethylene at 5 oC, and methane, ethane and propane at 10 oC respectively. Optimal potentials for CO2 reduction in the view of over all faradic efficiency were high values (-2.0 and -2.2 V) for gas products whereas low potential (-1.5 V) for liquid products regardless of concentration and temperature.

Original languageEnglish
Pages (from-to)247-255
Number of pages9
JournalKorean Chemical Engineering Research
Volume52
Issue number2
DOIs
StatePublished - Apr 2014

Keywords

  • Electrochemical reaction
  • Perovskite
  • Porous electrode

Fingerprint

Dive into the research topics of 'Electrochemical reduction of carbon dioxide using porous La 0.8Sr0.2CuO3 electrode'. Together they form a unique fingerprint.

Cite this