The influence of electrolyte identity upon the electro-reduction of CO2

Setterfield-Price, Briony Megan; Dryfe, Robert A. W.

doi:10.1016/j.jelechem.2014.07.009

Cited by 36 publications

(30 citation statements)

References 42 publications

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“…In previous studies, both aqueous and non-aqueous electrolytes have been investigated for CO 2 electrolysis. [15,17,[69][70][71][72] For aqueous electrolytes, the most commonly used electrolyte is a 0.1M -0.5M NaHCO 3 or KHCO 3 solution with a pH value of 7 after CO 2 saturation. [15,26,43] The pH value is considered for CO 2 electrolysis due to the suppression of undesired hydrogen evolution reaction.…”

Section: Choice Of Electrolytementioning

confidence: 99%

“…Aqueous electrolytes other than bicarbonate have also been studied. [71][72][73][74][75] Both Lister and Kenis studied the influences of electrolyte in CO 2 electrolysis and concluded that a KOH electrolyte with a high pH value is favorable for CO 2 electrolysis compared to KCl or K 2 SO 4 based electrolytes. [73][74][75] The superior performance of KOH electrolyte is likely due to the favorable anion absorption on the electrode surface and/or the reduced overpotential of the anode.…”

Section: Choice Of Electrolytementioning

confidence: 99%

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Electrochemical CO2 reduction: Electrocatalyst, reaction mechanism, and process engineering

2016

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Carbon dioxide (CO 2) emission from fossil fuel utilization poses a potential thread to global climate. Recent development in electrochemical CO 2 reduction opens up new possibilities of utilization of CO 2 as a carbon feedstock for fuel generation and commodity chemicals. This article reviewed progress related to electrochemical CO 2 reduction in the past few years, with a focus on new development of CO 2 reduction electrocatalysts, mechanistic understanding of CO 2 electro-reduction reaction, and process engineering efforts in CO 2 electrolyzers. Additionally, critical issues associated with current state-of-art systems were identified and potential directions for future studies were discussed. The article aims at providing the community a timely review of recent technical achievements as well as inspiring new ideas towards a practical CO 2 electrolysis technology.

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Section: Choice Of Electrolytementioning

confidence: 99%

Section: Choice Of Electrolytementioning

confidence: 99%

Electrochemical CO2 reduction: Electrocatalyst, reaction mechanism, and process engineering

2016

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“…Electrolytes are also important for electrolyzer performance and influence the activities, selectivities, and the overpotentials required . Approaches based on engineering electrolytes could be a way to bring the eCO 2 RR to CO closer to feasibility at scale.…”

Section: Introductionmentioning

confidence: 99%

“…Many studies have focused on understanding how different alkali metals‐based aqueous electrolytes interact with the catalyst and reaction intermediates at the electrode‐electrolyte interface. Several experimental and computational studies have investigated the role of cations and anions that make up the electrolyte on eCO 2 RR performance. Anion effects are interpreted on the basis of specific adsorption and/or pH, whereas cation effects are explained using promoter effects, Frumkin effects, cation hydrolysis, and electrical double layer (EDL) stabilization .…”

Section: Introductionmentioning

confidence: 99%

System Design Rules for Intensifying the Electrochemical Reduction of CO₂ to CO on Ag Nanoparticles

et al. 2020

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Electroreduction of CO 2 (eCO 2 RR) is a potentially sustainable approach for carbon-based chemical production. Despite significant progress, performing eCO 2 RR economically at scale is challenging. Here we report meeting key technoeconomic benchmarks simultaneously through electrolyte engineering and process optimization. A systematic flow electrolysis studyperforming eCO 2 RR to CO on Ag nanoparticles as a function of electrolyte composition (cations, anions), electrolyte concentration, electrolyte flow rate, cathode catalyst loading, and CO 2 flow rate -resulted in partial current densities of 417 and 866 mA/cm 2 with faradaic efficiencies of 100 and 98 % at cell potentials of À 2.5 and À 3.0 V with full cell energy efficiencies of 53 and 43 %, and a conversion per pass of 17 and 36 %, respectively, when using a CsOH-based electrolyte. The cumulative insights of this study led to the formulation of system design rules for high rate, highly selective, and highly energy efficient eCO 2 RR to CO.[a] S.

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“…One solution that has received much attention in current research is CO 2 reduction into products that can be used as alternatives to fossil fuels. A variety of photochemical, electrophotochemical, and electrochemical methods have been proposed for CO 2 reduction [3][4][5]. However, a growing interest has been recently shown to electrochemical methods on grounds of their following advantages [1].…”

Section: Introductionmentioning

confidence: 99%

Pt-modified nitrogen doped reduced graphene oxide: A powerful electrocatalyst for direct CO2 reduction to methanol

Ensafi

Alinajafi

Rezaei

2016

Journal of Electroanalytical Chemistry

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Reduction of CO 2 to useful chemicals such as carbon monoxide, oxalic acid, and methanol has recently attracted considerable attention because of its decisive roles in the climate change and energy cycle. Here, Pt@nitrogen doped reduced graphene oxide (Pt@rNGO) is introduced as a new catalyst effective in the direct production of methanol from the reduction of CO 2 at various potentials and pH levels. The electrolytic reduction of CO 2 in a CO 2 saturated solution at a Pt@rNGO modified glassy carbon electrode is achieved under the optimum conditions of an applied potential of-0.30 V (vs. Ag/AgCl) and a pH equal to 2.0. The methanol thus produced is monitored by 13 C-NMR. The Faradic efficiency of the methanol production is found to be 41%. Results reveal that, compared to its counterparts used in previous studies, Pt@rNGO as a heterogeneous electrocatalyst requires a lower applied reduction potential and serves as a direct pathway for the conversion of carbon dioxide to methanol.

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The influence of electrolyte identity upon the electro-reduction of CO2

Cited by 36 publications

References 42 publications

Electrochemical CO2 reduction: Electrocatalyst, reaction mechanism, and process engineering

Electrochemical CO2 reduction: Electrocatalyst, reaction mechanism, and process engineering

System Design Rules for Intensifying the Electrochemical Reduction of CO₂ to CO on Ag Nanoparticles

Pt-modified nitrogen doped reduced graphene oxide: A powerful electrocatalyst for direct CO2 reduction to methanol

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The influence of electrolyte identity upon the electro-reduction of CO2

Cited by 36 publications

References 42 publications

Electrochemical CO2 reduction: Electrocatalyst, reaction mechanism, and process engineering

Electrochemical CO2 reduction: Electrocatalyst, reaction mechanism, and process engineering

System Design Rules for Intensifying the Electrochemical Reduction of CO2 to CO on Ag Nanoparticles

Pt-modified nitrogen doped reduced graphene oxide: A powerful electrocatalyst for direct CO2 reduction to methanol

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Product

Resources

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System Design Rules for Intensifying the Electrochemical Reduction of CO₂ to CO on Ag Nanoparticles