Large Current Density CO2 Reduction under High Pressure Using Gas Diffusion Electrodes
- 1 March 1997
- journal article
- research article
- Published by Oxford University Press (OUP) in Bulletin of the Chemical Society of Japan
- Vol. 70 (3) , 571-576
- https://doi.org/10.1246/bcsj.70.571
Abstract
Electrochemical reduction of CO2 was studied under high pressure on Co, Rh, Ni, Pd, Pt, Ag, and Cu electrocatalysts supported in the gas diffusion electrode (GDE). CO was produced on Pd and Ag catalysts at faradaic efficiencies of 58 and 86%, respectively, at 300 mA cm−2 under CO2 20 atm. In the case of Cu-GDE, CO and formic acid were produced as the main reduction products. Hydrogen was the predominant reduction product in the electrolyses using other GDEs. Effects of the CO2 pressure, the current density, and the passed charge in the electrochemical reduction of CO2 using Pd and Ag-GDEs were investigated in detail. The maximum partial current density of CO formed on the Pd-GDE under CO220 atm was 450 mA cm−2. A very large partial current density of CO formation of 3.05 A cm−2 was achieved in the electrolysis under 30 atm on the Ag-GDE.Keywords
This publication has 23 references indexed in Scilit:
- High Efficiency Electrochemical Reduction of Carbon Dioxide under High Pressure on a Gas Diffusion Electrode Containing Pt CatalystsJournal of the Electrochemical Society, 1995
- Fischer‐Tropsch Electrochemical CO 2 Reduction to Fuels and ChemicalsJournal of the Electrochemical Society, 1994
- Electrocatalytic process of CO selectivity in electrochemical reduction of CO2 at metal electrodes in aqueous mediaElectrochimica Acta, 1994
- Electrochemical Reduction of CO 2 on a Cu Electrode under High Pressure: Factors that Determine the Product SelectivityJournal of the Electrochemical Society, 1994
- Electrochemical Reduction of High Pressure CO 2 on Ni ElectrodesJournal of the Electrochemical Society, 1993
- Carbon Dioxide Reduction to Alcohols using Perovskite‐Type ElectrocatalystsJournal of the Electrochemical Society, 1993
- Electrochemical Reduction of Carbon Dioxide at Various Metal Electrodes in Aqueous Potassium Hydrogen Carbonate SolutionBulletin of the Chemical Society of Japan, 1990
- High Rate Gas Phase CO 2 Reduction to Ethylene and Methane Using Gas Diffusion ElectrodesJournal of the Electrochemical Society, 1990
- Use of gas-diffusion electrodes for high-rate electrochemical reduction of carbon dioxide. II. Reduction at metal phthalocyanine-impregnated electrodesJournal of Applied Electrochemistry, 1987
- Use of gas-diffusion electrodes for high-rate electrochemical reduction of carbon dioxide. I. Reduction at lead, indium- and tin-impregnated electrodesJournal of Applied Electrochemistry, 1987