Electrocatalytic Formation of CH 4 from CO 2 on a Pt Gas Diffusion Electrode
Open accessAbstract
Electrochemical reduction of under high pressure (>50 atm) on a Pt gas diffusion electrode (Pt—GDE) was studied. When the Pt catalyst layer was directed toward the gas phase (the reverse arrangement), methane was produced as the main reduction product at high faradaic efficiency and at large partial current density. Ethanol, ethylene, ethane, carbon monoxide, and formic acid were also produced. The effects of the Pt catalyst, electrode arrangement, pressure, reaction temperature, and hydrogen pretreatment of the electrode were investigated for this electrocatalytic reaction. Faradaic efficiencies of the formation of reduction products such as methane, carbon monoxide, and formic acid depended significantly on the pressure and temperature. The yield of reduction products was increased by hydrogen pretreatment of the Pt—gas diffusion electrode.
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Acidification of the cathode compartment over time can be an issue in CEM gas phase electrolyzers, especially at higher current densities, leading to increased HER and decreased CO2RR.
“On the other hand, the acidification of the cathode compartment over time can be an issue in these systems, especially at higher current densities, leading to increased HER and decreased CO2RR.[155,156]”
From Electrochemical CO <sub>2</sub> Reduction into Chemical Feedstocks: From Mechanistic Electrocatalysis Models to System Design (2019) · cites this paper as [156]
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- Authors
- Hara, K., & Sakata, T.
- Affiliations
- Tokyo Institute of Technology (JP)
- ORCID
- Hara, Kohjiro
- Venue
- Journal of The Electrochemical Society
- Publisher
- The Electrochemical Society
- Published
- 1997-02-01
- Volume
- 144
- Issue
- 2
- Pages
- 539-545
- ISSN
- 0013-4651 (ISSN-L)
- 1945-7111
- OpenAlex
- W2024946048
- Cited by
- 67
- References
- 1
- Citations by year
- 2025: 4 · 2024: 3 · 2022: 4 · 2021: 2 · 2020: 2 · 2019: 6 · 2018: 5 · 2017: 2 · 2016: 6 · 2015: 3 · 2014: 5 · 2013: 4 · 2012: 2
- FWCI
- 1.41
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Licence
- Locations
- Journal of The Electrochemical Society (publishedVersion)
- Funders
- Japan Society for the Promotion of Science
- Topics
- Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › CO2 Reduction Techniques and Catalysts
- Physical Sciences › Chemical Engineering › Catalysis › Catalysts for Methane Reforming
- Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Electrocatalysts for Energy Conversion
- Keywords
- electrochemical CO2 reduction, methane production, platinum catalysts, gas diffusion electrode, electrode configuration, Faradaic efficiency, hydrogen pretreatment, carbon monoxide, formic acid, ethanol, ethylene, ethane, reaction temperature, pressure effects
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