Journal Article10.1039/C9TA02405K
Achieving highly efficient CO2 to CO electroreduction exceeding 300 mA cm−2 with single-atom nickel electrocatalysts
Hui-Yun Jeong,Mani Balamurugan,Venkata Surya Kumar Choutipalli,Venkata Surya Kumar Choutipalli,Eun-Suk Jeong,Venkatesan Subramanian,Venkatesan Subramanian,Uk Sim,Ki Tae Nam +8 more
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TL;DR: In this article, single atom nickel and nitrogen doped three-dimensional porous carbon catalysts are developed for the selective production of carbon monoxide (CO) from CO2, and the catalysts exhibit high CO selectivity with over 99% faradaic efficiency at −0.8 V vs. RHE in a bicarbonate electrolyte.
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Abstract: The electrochemical reduction of carbon dioxide (CO2) to value-added products is a promising approach to reduce excess CO2 in the atmosphere. However, the selective reduction of CO2 in aqueous electrolytes has been challenging owing to a competing hydrogen evolution reaction occurring in aqueous electrolytes. In this study, single atom nickel and nitrogen doped three-dimensional porous carbon catalysts are developed for the selective production of carbon monoxide (CO) from CO2. The catalysts exhibit high CO selectivity with over 99% faradaic efficiency at −0.8 V vs. the reversible hydrogen electrode (RHE), and achieve a high current density of over 50 mA cm−2 at −1.0 V vs. RHE in a bicarbonate electrolyte. To further improve the CO2 reduction rate, the accessibility of CO2 to the catalysts was enhanced by directly supplying gaseous CO2 to the surface of the catalysts. The catalysts were deposited between a gas diffusion layer and an ion exchange membrane to form a membrane electrode assembly (MEA). Benefiting from the high concentration of CO2 over the catalyst surfaces and the three-dimensional structure of the catalysts, a high CO production rate exceeding 300 mA cm−2 with 99% faradaic efficiency can be achieved.
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Single-Atom Catalysts across the Periodic Table.
TL;DR: A compositional encyclopedia of SACs is provided, celebrating the 10th anniversary of the introduction of this term, and examines the coordination structures and associated properties accessed through distinct single-atom-host combinations and relate them to their main applications in thermo-, electro-, and photocatalysis.
958
Solar fuels: research and development strategies to accelerate photocatalytic CO<sub>2</sub> conversion into hydrocarbon fuels
01 Jan 2022
TL;DR: In this article , the authors propose fundamentals, challenges, strategies, and prospects for photocatalytic CO 2 conversion research and propose a review of the current state of the art.
472
Surface Coordination Chemistry of Atomically Dispersed Metal Catalysts.
TL;DR: This review will illustrate how the local and vicinal coordination species on different support systems act together with the dispersed catalytic metal center to determine the catalytic activity, selectivity, and stability of ADCs.
426
Transition metal-based catalysts for the electrochemical CO2 reduction: from atoms and molecules to nanostructured materials
TL;DR: The studies herein presented show that the basic principles in molecular catalysis and organometallic chemistry can be effectively used to design new efficient and selective heterogeneous catalysts for CO2 reduction.
An industrial perspective on catalysts for low-temperature CO2 electrolysis
Richard I. Masel,Zengcai Liu,Hongzhou Yang,Jerry J. Kaczur,Daniel Carrillo,Shaoxuan Ren,Danielle A. Salvatore,Curtis P. Berlinguette +7 more
TL;DR: In this article, the key advances in nanocatalysts that have led to the impressive electrochemical conversion of CO2 to useful products and provides benchmarks that others can use to compare their results.
360
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