Journal article
Electrode Surface Heating with Organic Films Improves CO 2 Reduction Kinetics on Copper
ACS energy letters, v 9(4), p1440
12 Apr 2024
PMID: 38633999
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Management of the electrode surface temperature is an understudied aspect of (photo)electrode reactor design for complex reactions, such as CO
reduction. In this work, we study the impact of local electrode heating on electrochemical reduction of CO
reduction. Using the ferri/ferrocyanide open circuit voltage as a reporter of the effective reaction temperature, we reveal how the interplay of surface heating and convective cooling presents an opportunity for cooptimizing mass transport and thermal assistance of electrochemical reactions, where we focus on reduction of CO
to carbon-coupled (C
) products. The introduction of an organic coating on the electrode surface facilitates well-behaved electrode kinetics with near-ambient bulk electrolyte temperature. This approach helps to probe the fundamentals of thermal effects in electrochemical reactions, as demonstrated through Bayesian inference of Tafel kinetic parameters from a suite of high throughput experiments, which reveal a decrease in overpotential for C
products by 0.1 V on polycrystalline copper via 60 °C surface heating.
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Details
- Title
- Electrode Surface Heating with Organic Films Improves CO 2 Reduction Kinetics on Copper
- Creators
- Nicholas B Watkins - California Institute of TechnologyYungchieh Lai - California Institute of TechnologyZachary J Schiffer - California Institute of TechnologyVirginia M Canestraight - California Institute of TechnologyHarry A Atwater - California Institute of TechnologyTheodor Agapie - California Institute of TechnologyJonas C Peters - California Institute of TechnologyJohn M Gregoire - California Institute of Technology
- Publication Details
- ACS energy letters, v 9(4), p1440
- Publisher
- AMER CHEMICAL SOC; WASHINGTON
- Number of pages
- 6
- Grant note
- Basic Energy Sciences: DE-SC0021266 U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, Fuels from Sunlight Hub Resnick Sustainability Institute at Caltech
This material is primarily based on work performed by the Liquid Sunlight Alliance, which is supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, Fuels from Sunlight Hub under Award Number DE-SC0021266. The Resnick Sustainability Institute at Caltech is acknowledged for its support of enabling infrastructure and facilities. We thank Florian Grass for many productive conversations.
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- A.J. Drexel Nanomaterials Institute
- Web of Science ID
- WOS:001184718500001
- Other Identifier
- 991022207078504721
UN Sustainable Development Goals (SDGs)
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Source: SDGs in the Output
InCites Highlights
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- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Chemistry, Physical
- Electrochemistry
- Energy & Fuels
- Materials Science, Multidisciplinary
- Nanoscience & Nanotechnology