Electrochemical Reduction of CO&lt;sub&gt;2&lt;/sub&gt; at Sb and Bi Electrodes in KHCO&lt;sub&gt;3&lt;/sub&gt; Solution

Komatsu, Seiji; Yanagihara, Tetsu; Hiraga, Yuki; Tanaka, Michie; Kunugi, Akira

doi:10.5796/kogyobutsurikagaku.63.217

Cited by 57 publications

(52 citation statements)

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Section: Analysis Of the Performance And Mechanisms Of Oxide‐derived mentioning

confidence: 95%

“…The electrochemical reduction of CO 2 to formate on bismuth cathodes was first reported by Komatsu and co‐workers . It was proposed that electrodeposited metallic bismuth catalysts were more active for CO 2 reduction, with deposited catalysts giving near unit efficiencies, while pure bismuth substrates gave only about 30 % Faradaic efficiency for formate production . Since that time, the CO 2 reduction chemistry of bismuth has received little focus; however, a few recent reports also show high selectivity and current densities for formate production on nanostructured bismuth catalysts …”

Section: Analysis Of the Performance And Mechanisms Of Oxide‐derived mentioning

confidence: 99%

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Understanding the Heterogeneous Electrocatalytic Reduction of Carbon Dioxide on Oxide‐Derived Catalysts

et al. 2017

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Global climate change and energy concerns have led to a surge of interest in the electrochemical conversion of carbon dioxide (CO2) to fuels such as methane and ethanol. Metals such as copper, tin, gold, and others have proven effective as catalysts for reducing CO2 to a wide spectrum of products. Interestingly, it has recently been shown that oxidizing some of these metals further enhances their catalytic activities and selectivities. Oxidation seems to play a fundamental, but poorly understood, role in modulating the reactivity of these catalysts. In this Review, recent progress towards understanding the effect of oxygen, surface morphologies, and local pH gradients on the catalysis of CO2 reduction is discussed.

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Section: Analysis Of the Performance And Mechanisms Of Oxide‐derived mentioning

confidence: 95%

Section: Analysis Of the Performance And Mechanisms Of Oxide‐derived mentioning

confidence: 99%

Understanding the Heterogeneous Electrocatalytic Reduction of Carbon Dioxide on Oxide‐Derived Catalysts

et al. 2017

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“…Main‐group metals including In, Sn, Tl, Pb, and Bi have been studied for high‐selectivity electrocatalytic production of formate . Bi was first reported as a potential ERC catalyst for formate synthesis twenty years ago, displaying a faradaic efficiency (FE) of 77 % . Pb and Sn were also investigated for formic acid synthesis in a bicarbonate solution.…”

Section: Introductionmentioning

confidence: 99%

High Selectivity Towards Formate Production by Electrochemical Reduction of Carbon Dioxide at Copper–Bismuth Dendrites

Hoffman

Gray

et al. 2018

ChemSusChem

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The electrochemical reduction of CO2 provides an alternative carbon‐neutral path for renewable synthesis of fuels and value‐added chemicals. This work demonstrates that dendritic, bimetallic Cu–Bi electrocatalysts with nanometer‐sized grains are capable of formate generation with a high selectivity. Optimizing composition of electrocatalyst could achieve a faradic efficiency of 90 % at −0.8 to −0.9 VRHE, and a partial current of more than 2 mA cm−2. The combination of Cu with Bi enables modulation of the adsorption strength of intermediates. This leads to an increased selectivity and suppressed formation of spurious species, especially hydrogen and CO. Comparison of product distribution for Cu–In versus Cu–Bi indicated that Bi is essential to induce a favorable adsorption configuration of the intermediate species and to promote formate production.

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“…This drop in FE for CO generation is due to enhanced production of HCO 2 H from CO 2 in the presence of an aqueous catholyte. 9 The Bi-CMEC assembly is robust under these conditions. Extended CPEs of over 12 hours showed no additional decay in current density and produced over 85,000 cumulative surface turnovers over the course of the experiment, which is significantly higher than that obtained using a Ag cathode with an [EMIM]BF 4 cocatalyst.…”

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Selective Conversion of CO₂ to CO with High Efficiency Using an Inexpensive Bismuth-Based Electrocatalyst

2013

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The wide-scale implementation of solar and other renewable sources of electricity requires improved means for energy storage. An intriguing strategy in this regard is the reduction of CO2 to CO, which generates an energy rich commodity chemical that can be coupled to liquid fuel production. In this work, we report an inexpensive Bismuth Carbon Monoxide Evolving Catalyst (Bi-CMEC) that can be formed upon cathodic polarization of an inert glassy carbon electrode in acidic solutions containing Bi3+ ions. This catalyst can be used in conjunction with ionic liquids to effect the electrocatalytic conversion of CO2 to CO with appreciable current density at overpotentials below 0.2 V. Bi-CMEC is selective for production of CO, operating with a Faradaic efficiency of approximately 95%. When taken together these correspond to a high energy efficiency for CO production, on par with that which has historically only been observed using expensive silver and gold cathodes.

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Electrochemical Reduction of CO<sub>2</sub> at Sb and Bi Electrodes in KHCO<sub>3</sub> Solution

Cited by 57 publications

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Understanding the Heterogeneous Electrocatalytic Reduction of Carbon Dioxide on Oxide‐Derived Catalysts

Understanding the Heterogeneous Electrocatalytic Reduction of Carbon Dioxide on Oxide‐Derived Catalysts

High Selectivity Towards Formate Production by Electrochemical Reduction of Carbon Dioxide at Copper–Bismuth Dendrites

Selective Conversion of CO₂ to CO with High Efficiency Using an Inexpensive Bismuth-Based Electrocatalyst

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Electrochemical Reduction of CO<sub>2</sub> at Sb and Bi Electrodes in KHCO<sub>3</sub> Solution

Cited by 57 publications

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Understanding the Heterogeneous Electrocatalytic Reduction of Carbon Dioxide on Oxide‐Derived Catalysts

Understanding the Heterogeneous Electrocatalytic Reduction of Carbon Dioxide on Oxide‐Derived Catalysts

High Selectivity Towards Formate Production by Electrochemical Reduction of Carbon Dioxide at Copper–Bismuth Dendrites

Selective Conversion of CO2 to CO with High Efficiency Using an Inexpensive Bismuth-Based Electrocatalyst

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Product

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Selective Conversion of CO₂ to CO with High Efficiency Using an Inexpensive Bismuth-Based Electrocatalyst