Metal ion cycling of Cu foil for selective C–C coupling in electrochemical CO2 reduction

Jiang, Kun; Sandberg, Robert B.; Akey, Austin; Li, Xinyan; Bell, David C.; Nørskov, Jens K.; Chan, Karen; Wang, Haotian

doi:10.1038/s41929-017-0009-x

Cited by 709 publications

(601 citation statements)

References 80 publications

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“…Of important note, the commercial viability of CO 2 RR to different products depends on a series of factors including not only the market demand of the product, but also the material, manufacturing, and separation costs. Although it is intuitively more desirable to control the selectivity toward higher‐valued products such as ethylene, ethanol, acetate, n ‐propanol, or even C 4 products, recent technoeconomic analysis unambiguously points out that the two‐electron electrochemical CO 2 RR to CO or formic acid is the most economically viable, whereas those C 2 –C 4 products other than propanol are not even profitable . This is understandable because the electricity cost is the major contributor to the operation cost of CO 2 electrolyzer.…”

Section: Fundamentals Of Electrochemical Co2 Reductionmentioning

confidence: 99%

Promises of Main Group Metal–Based Nanostructured Materials for Electrochemical CO₂ Reduction to Formate

Han

Pan

et al. 2019

Advanced Energy Materials

497

384

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Selective CO2 reduction to formic acid or formate is the most technologically and economically viable approach to realize electrochemical CO2 valorization. Main group metal–based (Sn, Bi, In, Pb, and Sb) nanostructured materials hold great promise, but are still confronted with several challenges. Here, the current status, challenges, and future opportunities of main group metal–based nanostructured materials for electrochemical CO2 reduction to formate are reviewed. Firstly, the fundamentals of electrochemical CO2 reduction are presented, including the technoeconomic viability of different products, possible reaction pathways, standard experimental procedure, and performance figures of merit. This is then followed by detailed discussions about different types of main group metal–based electrocatalyst materials, with an emphasis on underlying material design principles for promoting the reaction activity, selectivity, and stability. Subsequently, recent efforts on flow cells and membrane electrode assembly cells are reviewed so as to promote the current density as well as mechanistic studies using in situ characterization techniques. To conclude a short perspective is offered about the future opportunities and directions of this exciting field.

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Section: Fundamentals Of Electrochemical Co2 Reductionmentioning

confidence: 99%

Promises of Main Group Metal–Based Nanostructured Materials for Electrochemical CO₂ Reduction to Formate

Han

Pan

et al. 2019

Advanced Energy Materials

497

384

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“…Harsh conditions, such as high temperature, high pressure, or highly negative electrical potentials, are generally required to convert CO 2 into other carbon compounds . On the other hand, the catalytic reduction of CO 2 via multiproton–multielectron‐coupled transfer in aqueous solutions into value‐added chemical/fuels has been regarded as a promising approach, due to its mild reaction conditions and potential product selectivity …”

Section: Introductionmentioning

confidence: 99%

Nanostructured Copper‐Based Electrocatalysts for CO₂ Reduction

et al. 2018

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The continuous increase of CO2 concentration in the atmosphere has been imposing an imminent threat for global climate change and environmental hazards. In recent years, the electrochemical or photochemical conversion of CO2 into value‐added chemicals or fuels has received significant attention, as it may enable an attractive means to mitigate the atmospheric CO2 concentration and complete the imbalanced carbon‐neutral energy cycle, as well as create renewable energy resources for human use. Among the different electrocatalysts being studied, Cu‐based materials have been demonstrated as the only category of candidates that allows the conversion of CO2 into a variety of reducing products, including carbon monoxide, hydrocarbons, and alcohols. Herein, the reaction pathways for different Cu‐based catalysts for C1 and C2+ products are introduced. Then, different parameters in tuning Cu‐based electrocatalysts are summarized and discussed, including the morphologies, compositions, crystal facets, and oxide derivation. In addition, various types of parameters for CO2 electroreduction are also described, particularly the option of electrolytes such as aqueous, ionic liquids, and organic solutions. Finally, the current challenges are discussed and the potential strategies to facilitate the future development of CO2 electroreduction are summarized.

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“…[1] Among these parameters,t he catalyst structure and chemical state are of particular importance. [7,8,16,21,[30][31][32][33][34][35][36] However,t he presence of (100) facets is not the only factor responsible for the superior activity and selectivity of cubeshaped Cu catalysts,w ith surface roughness,s ubsurface oxygen and Cu I species or Cu/Cu I interfaces formed and/or stabilized under reaction conditions also playing av ery important role. [20][21][22][23][24][25][26][27][28][29] Previous studies [9][10][11] on Cu single crystals have shown the improved C À Cc oupling performance of (100) facets,w hich was further confirmed by the high selectivity towards ethylene observed on cube-shaped Cu catalysts.…”

mentioning

confidence: 99%

Dynamic Changes in the Structure, Chemical State and Catalytic Selectivity of Cu Nanocubes during CO₂ Electroreduction: Size and Support Effects

et al. 2018

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In situ and operando spectroscopic and microscopic methods were used to gain insight into the correlation between the structure, chemical state, and reactivity of size- and shape-controlled ligand-free Cu nanocubes during CO electroreduction (CO RR). Dynamic changes in the morphology and composition of Cu cubes supported on carbon were monitored under potential control through electrochemical atomic force microscopy, X-ray absorption fine-structure spectroscopy and X-ray photoelectron spectroscopy. Under reaction conditions, the roughening of the nanocube surface, disappearance of the (100) facets, formation of pores, loss of Cu and reduction of CuO species observed were found to lead to a suppression of the selectivity for multi-carbon products (i.e. C H and ethanol) versus CH . A comparison with Cu cubes supported on Cu foils revealed an enhanced morphological stability and persistence of Cu species under CO RR in the former samples. Both factors are held responsible for the higher C /C product ratio observed for the Cu cubes/Cu as compared to Cu cubes/C. Our findings highlight the importance of the structure of the active nanocatalyst but also its interaction with the underlying substrate in CO RR selectivity.

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Metal ion cycling of Cu foil for selective C–C coupling in electrochemical CO2 reduction

Cited by 709 publications

References 80 publications

Promises of Main Group Metal–Based Nanostructured Materials for Electrochemical CO₂ Reduction to Formate

Promises of Main Group Metal–Based Nanostructured Materials for Electrochemical CO₂ Reduction to Formate

Nanostructured Copper‐Based Electrocatalysts for CO₂ Reduction

Dynamic Changes in the Structure, Chemical State and Catalytic Selectivity of Cu Nanocubes during CO₂ Electroreduction: Size and Support Effects

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Metal ion cycling of Cu foil for selective C–C coupling in electrochemical CO2 reduction

Cited by 709 publications

References 80 publications

Promises of Main Group Metal–Based Nanostructured Materials for Electrochemical CO2 Reduction to Formate

Promises of Main Group Metal–Based Nanostructured Materials for Electrochemical CO2 Reduction to Formate

Nanostructured Copper‐Based Electrocatalysts for CO2 Reduction

Dynamic Changes in the Structure, Chemical State and Catalytic Selectivity of Cu Nanocubes during CO2 Electroreduction: Size and Support Effects

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Product

Resources

About

Promises of Main Group Metal–Based Nanostructured Materials for Electrochemical CO₂ Reduction to Formate

Promises of Main Group Metal–Based Nanostructured Materials for Electrochemical CO₂ Reduction to Formate

Nanostructured Copper‐Based Electrocatalysts for CO₂ Reduction

Dynamic Changes in the Structure, Chemical State and Catalytic Selectivity of Cu Nanocubes during CO₂ Electroreduction: Size and Support Effects