Syngas production from electrochemical reduction of CO2 at high current density using oxide derived Zn/Cu nanocomposite

Malik, Karan; Rajbongshi, Biju Mani; Verma, Anil

doi:10.1016/j.jcou.2019.06.020

Cited by 25 publications

(14 citation statements)

References 37 publications

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“…The CuZn0.4 and CuZn0.5 electrodes can reach high CO production rates of 201 and 193 mmol h À1 cm À2 , respectively, at À1.1 V. The materials presented herein demonstrate an enhanced selectivity and production rate for CO compared with the reported similar materials. [26,[28][29][30][31]47] To further investigate the stability behavior, 4 h electrolysis has been performed on a CuZn0.4 electrode at À1.0 V. As shown in Figure 9 c, the CuZn0.4 electrode maintains a quasi-steady CO partial current density of 4.3 mA cm À2 . The FE CO retains an average value of 70 %, whereas the FE for H 2 remains about 28 %.…”

Section: Electrochemical Characterizations and Product Analyses Of Thmentioning

confidence: 99%

Coupled Copper–Zinc Catalysts for Electrochemical Reduction of Carbon Dioxide

et al. 2020

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A catalyst plays a key role in the electrochemical reduction of CO2 to valuable chemicals and fuels. Hence, the development of efficient and inexpensive catalysts has attracted great interest from both the academic and industrial communities. In this work, low‐cost catalysts coupling Cu and Zn are designed and prepared with a green microwave‐assisted route. The Cu to Zn ratio in the catalysts can be easily tuned by adjusting the precursor solutions. The obtained Cu–Zn catalysts are mainly composed of polycrystalline Cu particles and monocrystalline ZnO nanoparticles. The electrodes with optimized Cu–Zn catalysts show enhanced CO production rates of approximately 200 μmol h−1 cm−2 with respect to those with a monometallic Cu or ZnO catalyst under the same applied potential. At the bimetallic electrodes, ZnO‐derived active sites are selective for CO formation and highly conductive Cu favors electron transport in the catalyst layer as well as charge transfer at the electrode/electrolyte interface.

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Section: Electrochemical Characterizations and Product Analyses Of Thmentioning

confidence: 99%

Coupled Copper–Zinc Catalysts for Electrochemical Reduction of Carbon Dioxide

et al. 2020

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“…Among the different catalysts experimented as of now, Cu has shown a distinctive ability to run the electroreduction of CO 2 to valued products [4,[24][25][26][27][28][29]. Cu outstandingly promotes the production of hydrocarbons at higher rate over long period of time which makes it as the best electrocatalyst for the CO 2 reduction [30,31]. Though Cu can be considered as a unique candidate but it generates a range of products where selectivity of each product is small [32].…”

Section: Introductionmentioning

confidence: 99%

Cu₂O/CuO Electrocatalyst for Electrochemical Reduction of Carbon Dioxide to Methanol

2020

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Herein, we report the controlled and direct fabrication of Cu2O/CuO thin film on the conductive nickel foam using electrodeposition route for the electrochemical reduction of carbon dioxide (CO2) to methanol. The electrocatalytic reduction was performed in CO2 saturated aqueous solution consisting of KHCO3, pyridine and HCl at room temperature. CO2 reduction was carried out at a constant potential of −1.3 V for 120 min to study the electrochemical performance of the prepared electrocatalysts. Cu2O/CuO shows better electrocatalytic activity with highest current density of 46 mA/cm2. The prepared catalyst can be an efficient and selective electrode for the production of methanol.

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“…%) and applied potential. [135] The Cu wt. % was changed by varying the ratio of precursor salt solutions (Cu and Zn nitrate).…”

Section: Alloying and Metal Substratesmentioning

confidence: 98%

Renewable Power for Electrocatalytic Generation of Syngas: Tuning the Syngas Ratio by Manipulating the Active Sites and System Design

et al. 2022

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Achieving decarbonization through zero net CO2 emissions requires commercially viable application of waste CO2, throughout the transition to renewable and low‐carbon energy sources. A promising approach is the electrochemical carbon dioxide reduction reaction (CO2RR), which when powered with renewable electricity sources, provides a pathway for the conversion of intermittent renewable energy and waste CO2 into value‐added chemicals and fuels. However, as CO2RR is accompanied by the competing hydrogen evolution reaction (HER) due to the presence of water, an opportunity is presented to generate a mixture of CO and H2, also known as synthesis gas or syngas – the building block of various oxy‐hydrocarbon products. The aim of this review is to analyze both Power‐to‐CO and Power‐to‐Syngas studies, in order to classify and discuss the active sites for both CO and H2 generation through a new lens, providing insights into the structure‐activity correlations and facilitating the design of more active syngas electrocatalysts in the future. Through an evaluation of the economic viability of syngas generation, we determine that the carbon capture cost is a key parameter, with improvements in catalyst activity, catalyst impurity tolerance, and electrolyzer technology necessary for significant improvement in the economics of electrocatalytic syngas generation.

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Syngas production from electrochemical reduction of CO2 at high current density using oxide derived Zn/Cu nanocomposite

Cited by 25 publications

References 37 publications

Coupled Copper–Zinc Catalysts for Electrochemical Reduction of Carbon Dioxide

Coupled Copper–Zinc Catalysts for Electrochemical Reduction of Carbon Dioxide

Cu₂O/CuO Electrocatalyst for Electrochemical Reduction of Carbon Dioxide to Methanol

Renewable Power for Electrocatalytic Generation of Syngas: Tuning the Syngas Ratio by Manipulating the Active Sites and System Design

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Syngas production from electrochemical reduction of CO2 at high current density using oxide derived Zn/Cu nanocomposite

Cited by 25 publications

References 37 publications

Coupled Copper–Zinc Catalysts for Electrochemical Reduction of Carbon Dioxide

Coupled Copper–Zinc Catalysts for Electrochemical Reduction of Carbon Dioxide

Cu2O/CuO Electrocatalyst for Electrochemical Reduction of Carbon Dioxide to Methanol

Renewable Power for Electrocatalytic Generation of Syngas: Tuning the Syngas Ratio by Manipulating the Active Sites and System Design

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Product

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Cu₂O/CuO Electrocatalyst for Electrochemical Reduction of Carbon Dioxide to Methanol