Cited by 82CO2 Reduction Techniques and CatalystsElectrocatalysts for Energy ConversionCatalysts for Methane Reforming

Large Current Density CO2 Reduction under High Pressure Using Gas Diffusion Electrodes

Hara, Kohjiro, Sakata, Tadayoshi·1997·Bulletin of the Chemical Society of Japan

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.

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Crossref · 10.1246/bcsj.70.571

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Authors
Hara, K., & Sakata, T.
Affiliations
Tokyo Institute of Technology (JP)
Venue
Bulletin of the Chemical Society of Japan
Published
1997-03-01
Volume
70
Issue
3
Pages
571-576
ISSN
  • 0009-2673 (ISSN-L)
  • 1348-0634
OpenAlex
W2084494377
Cited by
82
References
20
Citations by year
2026: 1 · 2025: 3 · 2024: 3 · 2023: 3 · 2022: 4 · 2021: 3 · 2020: 6 · 2019: 13 · 2018: 6 · 2017: 6 · 2016: 3 · 2015: 3 · 2014: 6 · 2013: 1 · 2012: 1
FWCI
2.35
Type
journal article
Language
en
Open access
closed
Locations
Bulletin of the Chemical Society of Japan (publishedVersion)
Topics
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › CO2 Reduction Techniques and Catalysts
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Electrocatalysts for Energy Conversion
  • Physical Sciences › Chemical Engineering › Catalysis › Catalysts for Methane Reforming
Keywords
electrochemical CO2 reduction, gas diffusion electrode, high-pressure CO2, co-production, palladium catalysts, silver catalysts, copper catalysts, formic acid, hydrogen production, Faradaic efficiency, current density, electrocatalysts

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