Electrochemical reduction of CO2 on compositionally variant Au-Pt bimetallic thin films

Ma, Ming; Hansen, Heine Anton; Valenti, Marco; Wang, Zegao; Cao, Anping; Dong, Mingdong; Smith, Wilson A.

doi:10.1016/j.nanoen.2017.09.043

Cited by 109 publications

(76 citation statements)

References 33 publications

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“…(%) = + ℎ × 100% ( 15) where and ℎ are the amount of one certain liquid product detected in anolyte and catholyte, respectively. Thus, the above equation can be used to calculate a ratio between the amount of one certain liquid product crossed to anolyte through AEM and the total amount of corresponding liquid product generated on cathode.…”

Section: Liquid Productsmentioning

confidence: 99%

“…[1][2][3][4][5][6][7][8] Over the past few decades, the focus of most CO2 reduction research has concentrated on the development of selective, efficient and stable electrocatalytsts using traditional H-cell reactors filled with CO2-saturated aqueous solutions. [9][10][11][12] Researchers have substantially reduced the overpotentials required for driving selective CO2 reduction via tuning morphologies, 13,14 compositions, 15 facets 16,17 and oxidation states of catalysts 18 . Although impressive progress has been made on the improvement of catalytic performance, low CO2 solubility in aqueous electrolyte and the thick mass-transfer boundary layer (> 50 µm) in H-cell lead to poor CO2 mass transport to the surface of the catalysts, 19,20 which significantly limits the current densities, preventing the potential for practical applications.…”

Section: Introductionmentioning

confidence: 99%

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Insights into the Carbon Balance for CO2 Electroreduction on Cu using Gas Diffusion Electrode Reactor Designs

Clark

Therkildsen

et al. 2020

Preprint

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In this work, the carbon balance during high-rate CO2 reduction in flow electrolyzers is rigorously analyzed. The CO2 consumption at gas-diffusion electrodes due to electrochemical reduction and reaction with OHat the electrode-electrolyte interface leads to a substantial reduction in the volumetric flowrate of gas flow out of the electrolyzer, especially when highly alkaline electrolytes and elevated current densities are utilized, mainly owing to elevated pH at cathode/electrolyte interface. Without considering the CO2 consumption, the Faradaic efficiencies for major gas products could be significantly overestimated during high current density CO2 reduction conditions, particularly in the case of high pH electrolyte. In addition, a detailed carbon balance path is elucidated via a two-step procedure of CO2 reaction with OHat cathode/electrolyte interface and subsequent CO2 generation at anode/electrolyte interface caused by a relatively low pH in the vicinity of the anode. Based on the proposed two-step carbon balance path, a systemic exploration of gases released in anolyte reveals the transformation of a HCO3-or OHcatholyte to a CO3 2catholyte, which was further confirmed by pH measurement.

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Section: Liquid Productsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Insights into the Carbon Balance for CO2 Electroreduction on Cu using Gas Diffusion Electrode Reactor Designs

Clark

Therkildsen

et al. 2020

Preprint

Self Cite

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“…The catalytic reduction of carbon dioxide (CO 2 ) to value-added products is an effective way of alleviating the severe environmental problem of global warming (Ran et al, 2018 ; Li et al, 2019 ). Great efforts have been devoted to developing advanced CO 2 conversion systems, including CO 2 electrochemical (Tripkovic et al, 2013 ; Ma et al, 2017 ; Wang et al, 2017 ), photocatalytic (Crake et al, 2017 ; Pipelzadeh et al, 2017 ; Cardoso et al, 2018 ; Li et al, 2019 ), and thermal catalytic reduction systems (Chaemchuen et al, 2019 ; Lin et al, 2019 ; Zeng et al, 2020 ). For these CO 2 conversion systems, the key factor which impacts the efficiency and conversion rate is the CO 2 reduction catalyst (Samanta et al, 2012 ; Zheng et al, 2017 ; Yaashikaa et al, 2019 ).…”

Section: Introductionmentioning

confidence: 99%

Carbon Nanomaterials From Metal-Organic Frameworks: A New Material Horizon for CO2 Reduction

et al. 2020

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The rise of CO 2 in the atmosphere, which results in severe climate change and temperature increase, is known as the major reason for the greenhouse effect. Reducing CO 2 to value-added products is an attractive solution to this severe problem, along with addressing the energy crisis, to which the catalysts being employed are of vital importance. Due to their high porosity and tunable compositions, metal-organic frameworks (MOFs) show great potential in energy conversion systems. By thermal or chemical treatment methods, the MOFs are easily turned into MOF-derived carbon nanomaterials. The much higher level of conductivity enables MOF-derived carbon nanomaterials to be employed in CO 2 conversion processes. The present review, discusses the state of the art of MOF-derived carbon nanomaterials in CO 2 electrochemical, photocatalytic, and thermal reduction applications. The corresponding reaction mechanisms and influence of various factors on catalyst performance are elaborated. Finally, the deficiencies and recommendations are provided for future progress.

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“…It is well-known that the D-band center model has played a crucial role in the adsorption ability and reaction activation energy [39][40][41] . It is one of the indicators to evaluate the catalytic effect [42][43][44][45][46][47] . Specifically, the effect of strain on the reactivity of the surface of catalyst can induce a shift in the metal D-band center.…”

Section: Introductionmentioning

confidence: 99%

Strain engineering the D-band center for Janus MoSSe edge: Nitrogen fixation

Tang

Wei

Liu

et al. 2019

Journal of Energy Chemistry

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Electrochemical reduction of CO2 on compositionally variant Au-Pt bimetallic thin films

Cited by 109 publications

References 33 publications

Insights into the Carbon Balance for CO2 Electroreduction on Cu using Gas Diffusion Electrode Reactor Designs

Insights into the Carbon Balance for CO2 Electroreduction on Cu using Gas Diffusion Electrode Reactor Designs

Carbon Nanomaterials From Metal-Organic Frameworks: A New Material Horizon for CO2 Reduction

Strain engineering the D-band center for Janus MoSSe edge: Nitrogen fixation

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