The electrochemical reduction of CO2 to CH4 and C2H4 at Cu/Nafion electrodes (solid polymer electrolyte structures)

DeWulf, David W.; Bard, Allen J.

doi:10.1007/bf00765357

Cited by 89 publications

(55 citation statements)

References 12 publications

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“…Besides, membrane electrode assemblies (MEAs) can improve the contact between the electrodes, enhancing the transport of species (i.e., CO 2 ) . On the other hand, the low solubility of CO 2 in water can be tackled by applying alternative solvents such as ionic liquids or operating with CO 2 gas at the cathode side, which also aids in reducing the competitive hydrogen evolution reaction (HER) …”

Section: Introductioncontrasting

confidence: 55%

“…Additionally, different products can be obtained from the electroreduction of CO 2 such as CO, formic acid (HCOOH), alcohols (e.g., CH 3 OH and C 2 H 6 O), CH 4 , C 2 H 4 , among others, depending on the number of electrons exchanged . In spite of the multiple applications of CH 4 such as its use as raw material in the chemical industry, natural gas, or as potential substitute for gasoline, the literature on specifically the gas‐phase electrochemical reduction of CO 2 to CH 4 in gas–liquid (G‐L) electrochemical cells is still scarce although the formation of CH 4 , together with valuable products such as C 2 H 4 and alcohols, has already been reported at Cu‐based electrodes in different configurations …”

Section: Introductioncontrasting

confidence: 55%

“…In particular, for the application of G‐L ecMRs for CH 4 production, Dewulf and Bard reported in 1988 a Faradaic efficiency ( FE ) to CH 4 and C 2 H 4 of 9 and 10 %, respectively, at −1.95 V versus Ag/AgCl in a Cu–solid polymer electrolyte electrode prepared by an electroless plating method . The two‐compartment cell was fed with humidified CO 2 gas (cathode side) and aqueous H 2 SO 4 (anode side).…”

Section: Introductionmentioning

confidence: 99%

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Productivity and Selectivity of Gas‐Phase CO₂ Electroreduction to Methane at Copper Nanoparticle‐Based Electrodes

2017

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In this study, copper nanoparticles are supported on porous carbon papers by airbrushing; they are then coupled with a Nafion 117 membrane to form working electrodes for the continuous production of methane through gas‐phase electroreduction of CO2 in a filter‐press electrochemical cell. The methane production and Faradaic efficiency (FE) are evaluated and compared at different applied voltages (from −1.8 to −2.4 V vs. Ag/AgCl) and catalyst loadings (0.25, 0.5, 1, and 1.5 mg cm−2). The maximum methane production rate is achieved at −2 V and 0.5 mg cm−2 (4.4 μmol m−2 s−1) whereas the highest Faradaic efficiencies can be obtained at 1 mg cm−2 (FE=10.1 %) and at −1.8 V (FE=12.1 %). The role of the porous carbon support and the possibility of humidifying the CO2 stream before it enters the cell are also tested. These results may provide a new understanding of the use of gas–liquid electrochemical membrane reactors for the direct conversion of CO2 in the gas phase.

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Section: Introductioncontrasting

confidence: 55%

Section: Introductioncontrasting

confidence: 55%

Section: Introductionmentioning

confidence: 99%

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Productivity and Selectivity of Gas‐Phase CO₂ Electroreduction to Methane at Copper Nanoparticle‐Based Electrodes

2017

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“…Electrochemistry Communications 50 (2015) 64-68 1. Within the first "liquid-liquid" (L-L) type, CO 2 gas is absorbed into the aqueous [4] or non-aqueous [5] electrolyte in the cathodic compartment and a liquid electrolyte, such as KHCO 3 [6] and KOH [7], is applied in the anodic chamber. Carbon monoxide, hydrocarbons, alcohols, acids and aldehydes were reported to be the major valuable products of this type of reactor [8,9].…”

Section: At Cathodementioning

confidence: 99%

A membrane electrode assembly for the electrochemical synthesis of hydrocarbons from CO2(g) and H2O(g)

Kriescher

Kugler

Hosseiny

et al. 2015

Electrochemistry Communications

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“…20 In order to reduce this complexity; CO 2 has to be reduced to single product with high Faradaic efficiency. [26][27] However, few authors investigated the effect of water oxidation using Co 3 O 4 electrocatalyst for hydrogen evolution reactions. Some studies were done for RCPE at Pb and Sn electrocatalysts to form HCOOH .…”

Section: Introductionmentioning

confidence: 99%

Electrochemical reduction of CO₂to HCOOH on a synthesized Sn electrocatalyst using a Co₃O₄anode

Yadav

Purkait

2015

RSC Adv.

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The present work investigates the electrocatalytic effect of tin (Sn) and cobalt oxide (Co 3 O 4 ) towards reduction of CO 2 to products electrochemically (RCPE). Electrocatalyst (Sn) powder was synthesized by electrodeposition method from SnCl 2 . 2H 2 O solution. Experiments were conducted using Co 3 O 4 and Sn electrodes as anode and cathode, respectively, in 0.5M carbonates and bicarbonates of potassium and sodium solutions. Electrodes were prepared by coating electrocatalysts on graphite plate surface. The experiments were conducted at different applied voltages (1.5 to 3.5 V) and time intervals (5, 10, 15, 20 and 25 min) at various electrolyte solutions. It was observed that HCOOH acid was the only product formed for all the applied conditions. At 1.5 V and 2 V, maximum Faradaic efficiencies of 74.04 % and 92.6 % for HCOOH were obtained at 20 and 5 min reaction in KHCO 3 electrolyte solution. The ability of Co 3 O 4 for water oxidation and Sn electrocatalyst towards reduction of CO 2 to HCOOH was established from the obtained results. Optimized reaction conditions to get high Faradaic efficiencies were explained in detail. 8 was found in the range of 156.7 -278.9 nm. The distribution median size (D v50 ) of Sn electrocatalyst particle was found to be 192.5 nm. Figure 3. Characterization of Sn electrocatalyst (a) FTIR, (b) XRD, and (c) particle size analysis

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The electrochemical reduction of CO2 to CH4 and C2H4 at Cu/Nafion electrodes (solid polymer electrolyte structures)

Cited by 89 publications

References 12 publications

Productivity and Selectivity of Gas‐Phase CO₂ Electroreduction to Methane at Copper Nanoparticle‐Based Electrodes

Productivity and Selectivity of Gas‐Phase CO₂ Electroreduction to Methane at Copper Nanoparticle‐Based Electrodes

A membrane electrode assembly for the electrochemical synthesis of hydrocarbons from CO2(g) and H2O(g)

Electrochemical reduction of CO₂to HCOOH on a synthesized Sn electrocatalyst using a Co₃O₄anode

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The electrochemical reduction of CO2 to CH4 and C2H4 at Cu/Nafion electrodes (solid polymer electrolyte structures)

Cited by 89 publications

References 12 publications

Productivity and Selectivity of Gas‐Phase CO2 Electroreduction to Methane at Copper Nanoparticle‐Based Electrodes

Productivity and Selectivity of Gas‐Phase CO2 Electroreduction to Methane at Copper Nanoparticle‐Based Electrodes

A membrane electrode assembly for the electrochemical synthesis of hydrocarbons from CO2(g) and H2O(g)

Electrochemical reduction of CO2to HCOOH on a synthesized Sn electrocatalyst using a Co3O4anode

Contact Info

Product

Resources

About

Productivity and Selectivity of Gas‐Phase CO₂ Electroreduction to Methane at Copper Nanoparticle‐Based Electrodes

Productivity and Selectivity of Gas‐Phase CO₂ Electroreduction to Methane at Copper Nanoparticle‐Based Electrodes

Electrochemical reduction of CO₂to HCOOH on a synthesized Sn electrocatalyst using a Co₃O₄anode