Large Current Density CO2 Reduction under High Pressure Using Gas Diffusion Electrodes
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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AEM gas phase electrolyzers typically have less competition from HER owing to decreased proton availability.
“Owing to the decreased proton availability, AEM systems typically have less competition from HER. [158]”
From Electrochemical CO <sub>2</sub> Reduction into Chemical Feedstocks: From Mechanistic Electrocatalysis Models to System Design (2019) · cites this paper as [158]
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Ferreira, L. H. (2011) · doi:10.47749/t/unicamp.2011.788571 · Cited by 1 · see citing works
Transformation of Carbon Dioxide by Diamond Powders
Terashima, C. (2015) · Hosokawa Powder Technology Foundation ANNUAL REPORT · doi:10.14356/hptf.13118
Sonoyama, N. (1999) · Electrochemistry · doi:10.5796/electrochemistry.67.997
- Authors
- Hara, K., & Sakata, T.
- Affiliations
- Tokyo Institute of Technology (JP)
- ORCID
- Hara, Kohjiro
- Venue
- Bulletin of the Chemical Society of Japan
- Publisher
- Oxford University Press (OUP)
- 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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