Electrochemical CO2 reduction reaction on cost-effective oxide-derived copper and transition metal–nitrogen–carbon catalysts

Lin, Zhang; Merino-Garcia, Iván; Albo, Jonathan; Sánchez‐Sánchez, Carlos M.

doi:10.1016/j.coelec.2020.04.005

Cited by 47 publications

(38 citation statements)

References 77 publications

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“…EDX and XPS confirm the presence of the dopant within the structure ( Tables S6 and S7 , respectively); however, the quantity is lower than in the pristine catalyst. The dopant leaching is a known issue in various systems during electrochemical reaction [ 47 , 48 ]. We believe that under the reduction potential, the material changes and part of the dopant gets lost, which influences long term stability and therefore this should be wider investigated in order to further improve the performances of the doped catalysts.…”

Section: Resultsmentioning

confidence: 99%

Zn- and Ti-Doped SnO2 for Enhanced Electroreduction of Carbon Dioxide

et al. 2021

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The electrocatalytic reduction of CO2 into useful fuels, exploiting rationally designed, inexpensive, active, and selective catalysts, produced through easy, quick, and scalable routes, represents a promising approach to face today’s climate challenges and energy crisis. This work presents a facile strategy for the preparation of doped SnO2 as an efficient electrocatalyst for the CO2 reduction reaction to formic acid and carbon monoxide. Zn or Ti doping was introduced into a mesoporous SnO2 matrix via wet impregnation and atomic layer deposition. It was found that doping of SnO2 generates an increased amount of oxygen vacancies, which are believed to contribute to the CO2 conversion efficiency, and among others, Zn wet impregnation resulted the most efficient process, as confirmed by X-ray photoelectron spectroscopy analysis. Electrochemical characterization and active surface area evaluation show an increase of availability of surface active sites. In particular, the introduction of Zn elemental doping results in enhanced performance for formic acid formation, in comparison to un-doped SnO2 and other doped SnO2 catalysts. At −0.99 V versus reversible hydrogen electrode, the total faradaic efficiency for CO2 conversion reaches 80%, while the partial current density is 10.3 mA cm−2. These represent a 10% and a threefold increases for faradaic efficiency and current density, respectively, with respect to the reference un-doped sample. The enhancement of these characteristics relates to the improved charge transfer and conductivity with respect to bare SnO2.

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Section: Resultsmentioning

confidence: 99%

Zn- and Ti-Doped SnO2 for Enhanced Electroreduction of Carbon Dioxide

et al. 2021

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“…CO 2 capture strategies are only considered as a transitory solution, on the long‐term further CO 2 conversion techniques are required to re‐functionalize the carbon dioxide by converting the gas to value‐added products. Hence, several techniques such as electroconversion [9,10,19,20,11–18] bioconversion, [21,22] photoconversion, [22,23] bio‐electroreduction [24–26] and photo‐electroreduction [27] are being investigated in the literature. Electroconversion has potential to convert CO 2 to methanol, [28] syngas, [29] ethanol, [30] methane [31] and formic acid [32] , depending on which boundary conditions are set for the industrial context.…”

Section: Introductionmentioning

confidence: 99%

Electroreduction of Carbon Dioxide into Formate: A Comprehensive Review

et al. 2021

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Carbon dioxide conversion into useful products has been gaining considerable attention as a global‐warming‐mitigation technique. The electrochemical conversion of CO2 into high‐value chemicals involves the utilization of electrical energy in the presence of an effective catalyst. The process products depend on the number of transferred electrons during the reaction and the characteristics of the electrode. Recently, electrodes coupled with active catalysts have been used to convert CO2 into valuable products including formic acid, hydrocarbons, and syngas. This review offers an overview of the recent literature on the electrochemical conversion of CO2 to valuable products, with an emphasis on the production of formate/formic acid. In addition, it compares the main features of electrochemical conversion to other techniques and summarizes their key advantages. It also provides future perspective for research and development, such as the need for novel and selective catalysts to obtain high conversion and product yield with low energy consumption.

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“…In recent years, several studies were done on various electrocatalysts, but yet, there are problems in Faradaic Efficiency (FE), Current Density (CD), Energy Efficiency, electrocatalyst deactivate, the internal resistance of electrocatalysts, and the potential for scalability to the large sizes without the loss of efficiency, because CO 2 is a thermodynamically stable molecule, it is fully oxidized [3][4][5][6][7][8][9][10][11][12]. A suitable electrocatalyst to reduce CO 2 is necessary to reach a low-cost process with acceptable selectivity and efficiency.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Zn/Ni-Based Electrocatalysts for Electrochemical Conversion of CO₂to SYNGAS

Beheshti¹,

Kakooei²,

Ismail³

et al. 2022

Electrocatalysis and Electrocatalysts for a Cleaner Environment - Fundamentals and Applications

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In the last decade, there is some research on the conversion of CO2 to energy form. CO2 can be converted to value-added chemicals including HCOOH, CO, CH4, C2H4, and liquid hydrocarbons that can be used in various industries. Among the methods, electrochemical methods are of concern regarding their capability to operate with an acceptable reaction rate and great efficiency at room temperature and can be easily coupled with renewable energy sources. Besides, electrochemical cell devices have been manufactured in a variety of sizes, from portable to large-scale applications. Catalysts that optionally reduce CO2 at low potential are required. Therefore, choosing a suitable electrocatalyst is very important. This chapter focused on the electrochemical reduction of CO2 by Zn-Ni bimetallic electrocatalyst. The Zn-Ni coatings were deposited on the low-carbon steel substrate. Electrochemical deposition parameters such as temperature in terms of LPR corrosion rate, microstructure, microcracks, and its composition have been investigated. Then, the electrocatalyst stability and activity, as well as gas intensity and selectivity, were inspected by SEM/EDX analysis, GC, and electrochemical tests. Among the electrocatalysts for CO2 reduction reaction, the Zn65%-Ni35% electrode with cluster-like microstructure had the best performance for CO2 reduction reaction according to minimum coke formation (<10%) and optimum CO and H2 faradaic efficiencies (CO FE% = 55% and H2 FE% = 45%).

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Electrochemical CO2 reduction reaction on cost-effective oxide-derived copper and transition metal–nitrogen–carbon catalysts

Cited by 47 publications

References 77 publications

Zn- and Ti-Doped SnO2 for Enhanced Electroreduction of Carbon Dioxide

Zn- and Ti-Doped SnO2 for Enhanced Electroreduction of Carbon Dioxide

Electroreduction of Carbon Dioxide into Formate: A Comprehensive Review

Investigation of Zn/Ni-Based Electrocatalysts for Electrochemical Conversion of CO₂to SYNGAS

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Electrochemical CO2 reduction reaction on cost-effective oxide-derived copper and transition metal–nitrogen–carbon catalysts

Cited by 47 publications

References 77 publications

Zn- and Ti-Doped SnO2 for Enhanced Electroreduction of Carbon Dioxide

Zn- and Ti-Doped SnO2 for Enhanced Electroreduction of Carbon Dioxide

Electroreduction of Carbon Dioxide into Formate: A Comprehensive Review

Investigation of Zn/Ni-Based Electrocatalysts for Electrochemical Conversion of CO2to SYNGAS

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Investigation of Zn/Ni-Based Electrocatalysts for Electrochemical Conversion of CO₂to SYNGAS