Tandem and Hybrid Processes for Carbon Dioxide Utilization

Overa, Sean; Feric, Tony G.; Park, Ah‐Hyung Alissa; Jiao, Feng

doi:10.1016/j.joule.2020.12.004

Cited by 65 publications

(56 citation statements)

References 14 publications

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“…[ 10 ] Therefore, the designing of a two‐step route (i.e., CO 2 to CO and CO to C 2+ ) provides an appropriate pathway for the highly selective conversion of CO 2 to C 2+ , which can be achieved by the fabrication of tandem catalysts with multicomposite or hierarchical structure. [ 11 ] For multicomposite catalysts, a synergistic effect between different components can be used to achieve in situ CO generation, promoting the subsequently reduced to C 2+ . Due to the excellent CO formation ability of Au and Ag, [ 12 ] many studies revealed that the combining Au or/and Ag with Cu could significantly improve the selectivity of C 2+ products for CO 2 RR.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Reduction of CO₂ Toward C₂ Valuables on Cu@Ag Core‐Shell Tandem Catalyst with Tunable Shell Thickness

Zhang

Zhao

et al. 2021

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After a great research on CO 2 electroreduction catalysts, scientists found that copper (Cu) is the only metal that can reduce CO 2 into C 2+ products. However, Cu itself usually has poor selectivity due to the wide product distribution, which limits their potential application in CO 2 RR. [3] Extensive distinguished works have been devoted to regulating the selectivity of Cu catalysts, such as optimizing crystal facets, [4] alloying, [5] modifying oxidation state, [6] surface doping, [7] introducing defects, [8] and modifying ligand. [9] Even so, the reduction of CO 2 into C 2+ products with high selectivity is still a challenging work. Thus, the rational design and preparation of efficient catalysts hold great importance in their fundamental study as well as the technical advancement of CO 2 RR.It is widely accepted that CO related intermediates are the key species to C 2+ products in CO 2 RR. [10] Therefore, the designing of a two-step route (i.e., CO 2 to CO and CO to C 2+ ) provides an appropriate pathway for the highly selective conversion of CO 2 to C 2+ , which can be achieved by the fabrication of tandem catalysts with multicomposite or hierarchical structure. [11] For multicomposite catalysts, a synergistic effect between different components can be used to achieve in situ CO generation, promoting the subsequently reduced to C 2+ . Due to the excellent CO formation ability of Au and Ag, [12] many studies revealed that the combining Au or/and Ag with Cu could significantly improve the selectivity of C 2+ products for CO 2 RR. Many composite catalysts, such as Au-bipy-Cu, [13] Au/Cu, [14] Cu nanowire/Ag nanoparticles (NPs), [15] layered Cu/Ag, [16] Ag@Cu NPs, [17] Cu 500 Ag 1000 , [18] Ag 1 -Cu 1.1 , [19] and Cu-Au/Ag nanoframes, [20] have been developed. In addition to the composition control, the finely engineered structure of the catalysts can also improve their performance. Among them, the fabrication of core-shell structure has been verified to be an effective strategy to boost the performance of nanomaterials through the short diffusion path, high active surface area, low internal resistance, and excellent stability. [21] Therefore, core-shell nanomaterials are appealing as electrocatalysts since the core materials are the main active component with specific functions, while the shell materials act as protective layers to Electrochemical CO 2 reduction reaction (CO 2 RR) is critical to converting CO 2 to high-value multicarbon chemicals. However, the Cu-based catalysts as the only option to reduce CO 2 into C 2+ products suffer from poor selectivity and low activity. Tandem catalysis for CO 2 reduction is an efficient strategy to overcome such problems. Here, Cu@Ag core-shell nanoparticles (NPs) with different silver layer thicknesses are fabricated to realize the tandem catalysis for CO 2 conversion by producing CO on Ag shell and further achieving C-C coupling on Cu core. It is found that Cu@Ag-2 NPs with the proper thickness of Ag shell exhibit the Faradaic efficiency (FE) of total C 2 products ...

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Section: Introductionmentioning

confidence: 99%

Electrochemical Reduction of CO₂ Toward C₂ Valuables on Cu@Ag Core‐Shell Tandem Catalyst with Tunable Shell Thickness

Zhang

Zhao

et al. 2021

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101

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“…Among the C2 products, only electrosynthesis of ethylene ( Dinh et al., 2018 ; Vennekoetter et al., 2019 ; García de Arquer et al., 2020 ; Ma et al, 2020 ) is reaching the defined performance benchmarks, and development of tandem systems with two-step electrolysis (CO 2 to CO, CO to C2 products) is likely to further improve the overall process selectivity ( Jouny et al., 2018b ; Overa et al., 2021 ).…”

Section: Resultsmentioning

confidence: 99%

Carbon neutral manufacturing via on-site CO2 recycling

2021

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“…In CO 2 electroreduction, the idea of using CO 2  CO  C 2+ tandems is to avoid carbonate formation during the electrosyntheses of C 2+ products because CO does not react with OH − when it is reduced to C 2+ products 102 . However, it is apparent that connecting two room‐temperature reactors does not shut down carbon formation.…”

Section: Newly Emerged Gde‐based Reactorsmentioning

confidence: 99%

“…The use of GDE has greatly advanced CO 2 electroreduction (Table 1). However, as stressed by many researchers, carbonate formation is probably the biggest roadblock for the practical utilization of CO 2 electroreduction in the present day 57,102,103 . The intuition regarding the negative impact of carbonate formation perhaps is its limitation to CO 2 single‐pass utilization.…”

Section: Challenges and Outlookmentioning

confidence: 99%

Valorizing carbon dioxide via electrochemical reduction on gas‐diffusion electrodes

Luo

Zhang

et al. 2021

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The electrochemical carbon dioxide (CO2) reduction provides a means to upgrade CO2 into value‐added chemicals. When powered by renewable electricity, CO2 electroreduction holds the promise of chemical manufacturing with carbon neutrality. A commercially relevant CO2 electroreduction process should be highly selective and productive toward desired products, energetically efficient for power conversion, and stable for long‐term operation. To achieve these goals, designing gas‐diffusion catalytic electrodes and prototyping reactors built upon in‐depth understandings of the reaction mechanisms are of paramount importance. In this review, the fundamentals of gas‐diffusion electrodes are briefly presented. Then, the most recent advances in developing high‐performance CO2 reduction using gas‐diffusion electrodes are overviewed. Reactor engineering aiming at enhancing productivity, energy efficiency, CO2 single‐pass utilization, and operating lifetime is further discussed. Challenges in developing CO2 electroreduction systems are included. The prospects for advancing CO2 electroreduction toward practical applications are also narrated.

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Tandem and Hybrid Processes for Carbon Dioxide Utilization

Cited by 65 publications

References 14 publications

Electrochemical Reduction of CO₂ Toward C₂ Valuables on Cu@Ag Core‐Shell Tandem Catalyst with Tunable Shell Thickness

Electrochemical Reduction of CO₂ Toward C₂ Valuables on Cu@Ag Core‐Shell Tandem Catalyst with Tunable Shell Thickness

Carbon neutral manufacturing via on-site CO2 recycling

Valorizing carbon dioxide via electrochemical reduction on gas‐diffusion electrodes

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Tandem and Hybrid Processes for Carbon Dioxide Utilization

Cited by 65 publications

References 14 publications

Electrochemical Reduction of CO2 Toward C2 Valuables on Cu@Ag Core‐Shell Tandem Catalyst with Tunable Shell Thickness

Electrochemical Reduction of CO2 Toward C2 Valuables on Cu@Ag Core‐Shell Tandem Catalyst with Tunable Shell Thickness

Carbon neutral manufacturing via on-site CO2 recycling

Valorizing carbon dioxide via electrochemical reduction on gas‐diffusion electrodes

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Electrochemical Reduction of CO₂ Toward C₂ Valuables on Cu@Ag Core‐Shell Tandem Catalyst with Tunable Shell Thickness

Electrochemical Reduction of CO₂ Toward C₂ Valuables on Cu@Ag Core‐Shell Tandem Catalyst with Tunable Shell Thickness