Exploring Electrochemical Flow-Cell Designs and Parameters for CO 2 Reduction to Formate under Industrially Relevant Conditions

Potassium formate can be considered an environmentally friendly and low-corrosion deicing material. Herein we explore and develop electrochemical solutions for on-site formate production from CO₂ under ambient conditions. We screen a variety of cathode catalysts in both H-type and gas-diffusion flow...

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Bibliographic Details
Published in:Journal of the Electrochemical Society 2022-05, Vol.169 (5), p.54511
Main Authors: Kirner, Joel, Chen, Yifu, Liu, Hengzhou, Song, Junhua, Liao, Jinyun, Li, Wenzhen, Zhao, Feng
Format: Article
Language:English
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Summary:Potassium formate can be considered an environmentally friendly and low-corrosion deicing material. Herein we explore and develop electrochemical solutions for on-site formate production from CO₂ under ambient conditions. We screen a variety of cathode catalysts in both H-type and gas-diffusion flow-type cells, and explore several possible flow-cell device configurations with various electrolytes and membrane candidates. We demonstrate a cell capable of industrially relevant current densities (≥200 mA cm −2 ) while maintaining faradaic efficiency of 95% for formate and electrochemical energy efficiency >20%, and compare our results to the state-of-the-art system in the literature.
ISSN:0013-4651
1945-7111
DOI:10.1149/1945-7111/ac6bc1