In Situ Reconstruction of a Hierarchical Sn‐Cu/SnOxCore/Shell Catalyst for High‐Performance CO2Electroreduction

Ye, Ke; Zhou, Zhiwen; Shao, Jiaqi; Lin, Lanying; Gao, Dunfeng; Ta, Na; Si, Rui; Wang, Guoxiong; Bao, Xinhe

doi:10.1002/anie.201916538

Cited by 311 publications

(148 citation statements)

References 57 publications

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“…Up to now, a variety of catalysts, such as metals [14,15] , metal oxides [16] , metal sulfides [17] , carbon-based materials [18,19] , metal organic frameworks (MOFs) [20] , single atoms [21] , and molecular catalysts [22] , have been exploited. Ring-packed molecules with rigid plane like porphyrins (PP) and phthalocyanines (Pc) enable electrons transfer from PP/Pc to metal-center sites to tune the electronic structure of active sites due to their special πconjugation structure.…”

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confidence: 99%

Molecular Modification of Single Cobalt Sites Boosts the Catalytic Activity of CO₂ Electroreduction into CO

et al. 2020

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Electroreduction of CO2 into carbonaceous fuels or industrial chemicals using renewable energy sources is an ideal way to promote global carbon recycling. Thus, it is of great importance to develop highly selective, efficient, and stable catalysts. Herein, we prepared cobalt single atoms (Co SAs) coordinated with phthalocyanine (Co SAs‐Pc). The anchoring of phthalocyanine with Co sites enabled electron transfer from Co sites to CO2 effectively via the π‐conjugated system, resulting in high catalytic performance of CO2 electroreduction into CO. During the process of CO2 electroreduction, the Faradaic efficiency (FE) of Co SAs‐Pc for CO was as high as 94.8 %. Meanwhile, the partial current density of Co SAs‐Pc for CO was −11.3 mA cm−2 at −0.8 V versus the reversible hydrogen electrode (vs RHE), 18.83 and 2.86 times greater than those of Co SAs (−0.60 mA cm−2) and commercial Co phthalocyanine (−3.95 mA cm−2), respectively. In an H‐cell system operating at −0.8 V vs RHE over 10 h, the current density and FE for CO of Co SAs‐Pc dropped by 3.2 % and 2.5 %. A mechanistic study revealed that the promoted catalytic performance of Co SAs‐Pc could be attributed to the accelerated reaction kinetics and facilitated CO2 activation.

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confidence: 99%

Molecular Modification of Single Cobalt Sites Boosts the Catalytic Activity of CO₂ Electroreduction into CO

et al. 2020

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“…A facile one-step electrodeposition technique by using hydrogen bubbles as a dynamic template was reported by Ye et al [247] for the fabrication of 3D hierarchical SnOx@Sn-Cu/Sn core-shell catalysts supported on Cu foam. They demonstrated that the SnO x shell with a hierarchical Sn-Cu/Sn core can be reconstructed in situ under cathodic potentials of CO 2 RR.…”

Section: Cathode With Metal-based Catalystsmentioning

confidence: 99%

Three-Dimensional Cathodes for Electrochemical Reduction of CO2: From Macro- to Nano-Engineering

et al. 2020

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Rising anthropogenic CO2 emissions and their climate warming effects have triggered a global response in research and development to reduce the emissions of this harmful greenhouse gas. The use of CO2 as a feedstock for the production of value-added fuels and chemicals is a promising pathway for development of renewable energy storage and reduction of carbon emissions. Electrochemical CO2 conversion offers a promising route for value-added products. Considerable challenges still remain, limiting this technology for industrial deployment. This work reviews the latest developments in experimental and modeling studies of three-dimensional cathodes towards high-performance electrochemical reduction of CO2. The fabrication–microstructure–performance relationships of electrodes are examined from the macro- to nanoscale. Furthermore, future challenges, perspectives and recommendations for high-performance cathodes are also presented.

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“…The calculation of catalyst intrinsic activity is of great importance. This is affordable in the case of electrocatalysts by the calculation of the electrochemically active surface area (ECSA), [69,70] or in case of metal catalysts by calculation of the turnover frequency (TOF). In our case, as the main catalyst is a metal oxide phase, a TOF may be calculated based on the specific number of exposed Co 3 + atoms.…”

Section: Composite Catalysts Without Aumentioning

confidence: 99%

Strong Promoting Effect of Gold Nanoparticles on the CO Abatement Catalytic Activity of CoO_x/Clay‐Bonded SiC Catalysts Produced by AA‐MOCVD Method Using Co(acac)₂ as Precursor

et al. 2020

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Clay-bonded SiC supported cobalt oxide catalysts were produced by the aerosol-assisted metal organic chemical vapor deposition method (AA-MOCVD) using Co(acac) 2 as precursor. Deposition temperatures 270 and 300°C were the most appropriate for the synthesis of a composite catalyst of high activity for the CO conversion reaction. A cone-shaped crystal habit is the dominant morphology. The catalysts were decorated with Au nanoparticles (NPs) of sizes in the range of 5-10 nm. This substantially improved the activity of the catalysts, lowering the onset temperature of activity by about 50°C. Ambient-pressure X-ray photoelectron spectroscopy (APXPS) was used to investigate in situ the electronic state of cobalt and gold during CO oxidation. APXPS results show that while Au remains in the metallic state during the reaction, it enhances the reduction of Co 3 + to Co 2 +. Au NPs adsorb CO molecules from the gas phase and supply them to the neighbor cobalt oxide particles.

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In Situ Reconstruction of a Hierarchical Sn‐Cu/SnO_xCore/Shell Catalyst for High‐Performance CO₂Electroreduction

Cited by 311 publications

References 57 publications

Molecular Modification of Single Cobalt Sites Boosts the Catalytic Activity of CO₂ Electroreduction into CO

Molecular Modification of Single Cobalt Sites Boosts the Catalytic Activity of CO₂ Electroreduction into CO

Three-Dimensional Cathodes for Electrochemical Reduction of CO2: From Macro- to Nano-Engineering

Strong Promoting Effect of Gold Nanoparticles on the CO Abatement Catalytic Activity of CoO_x/Clay‐Bonded SiC Catalysts Produced by AA‐MOCVD Method Using Co(acac)₂ as Precursor

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In Situ Reconstruction of a Hierarchical Sn‐Cu/SnOxCore/Shell Catalyst for High‐Performance CO2Electroreduction

Cited by 311 publications

References 57 publications

Molecular Modification of Single Cobalt Sites Boosts the Catalytic Activity of CO2 Electroreduction into CO

Molecular Modification of Single Cobalt Sites Boosts the Catalytic Activity of CO2 Electroreduction into CO

Three-Dimensional Cathodes for Electrochemical Reduction of CO2: From Macro- to Nano-Engineering

Strong Promoting Effect of Gold Nanoparticles on the CO Abatement Catalytic Activity of CoOx/Clay‐Bonded SiC Catalysts Produced by AA‐MOCVD Method Using Co(acac)2 as Precursor

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In Situ Reconstruction of a Hierarchical Sn‐Cu/SnO_xCore/Shell Catalyst for High‐Performance CO₂Electroreduction

Molecular Modification of Single Cobalt Sites Boosts the Catalytic Activity of CO₂ Electroreduction into CO

Molecular Modification of Single Cobalt Sites Boosts the Catalytic Activity of CO₂ Electroreduction into CO

Strong Promoting Effect of Gold Nanoparticles on the CO Abatement Catalytic Activity of CoO_x/Clay‐Bonded SiC Catalysts Produced by AA‐MOCVD Method Using Co(acac)₂ as Precursor