Unsaturated edge-anchored Ni single atoms on porous microwave exfoliated graphene oxide for electrochemical CO2

Cheng, Yi; Zhao, Shiyong; Li, Haobo; He, Shuai; Veder, Jean‐Pierre; Johannessen, Bernt; Xiao, Jianping; Lu, Shanfu; Pan, Jian; Chisholm, M. F.; Yang, Shize; Liu, Chang; Chen, Jingguang G.; Jiang, San Ping

doi:10.1016/j.apcatb.2018.10.046

Cited by 251 publications

(184 citation statements)

References 61 publications

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“…According to the fitting results, the proposed local structure of NiSA/PCFM involves coordination by four N atoms (Ni-N 4 , Fig. 3f, Supplementary Table 3) [24][25][26][27] . NiSA/CFM also possess Ni-N 4 structure, indicated by XPS ( Supplementary Fig.…”

Section: Resultsmentioning

confidence: 99%

Carbon dioxide electroreduction on single-atom nickel decorated carbon membranes with industry compatible current densities

et al. 2020

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Carbon dioxide electroreduction provides a useful source of carbon monoxide, but comparatively few catalysts could be sustained at current densities of industry level. Herein, we construct a high-yield, flexible and self-supported single-atom nickel-decorated porous carbon membrane catalyst. This membrane possesses interconnected nanofibers and hierarchical pores, affording abundant effective nickel single atoms that participate in carbon dioxide reduction. Moreover, the excellent mechanical strength and well-distributed nickel atoms of this membrane combines gas-diffusion and catalyst layers into one architecture. This integrated membrane could be directly used as a gas diffusion electrode to establish an extremely stable three-phase interface for high-performance carbon dioxide electroreduction, producing carbon monoxide with a 308.4 mA cm−2 partial current density and 88% Faradaic efficiency for up to 120 h. We hope this work will provide guidance for the design and application of carbon dioxide electro-catalysts at the potential industrial scale.

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Section: Resultsmentioning

confidence: 99%

Carbon dioxide electroreduction on single-atom nickel decorated carbon membranes with industry compatible current densities

et al. 2020

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“…[46] Nevertheless, difficulties associatedw ith homogeneous catalytic systems, including high price, difficult separation, and recycling of catalysts, impedet heir large-scale industrial applications. These issues can be easily overcomeb y using ah eterogeneous catalyst.I nf act, various heterogeneous catalysts such as Au, [47] Ag, [35,48] Pd, [49] Zn, [50] Ga, [51,52] and Ndoped carbon nanomaterials [53] as well as transition-metal single-atom-based materials [54,55] aqueous electrolytes, of which Ag and Au demonstrate relatively high activities. Furthermore, it is worth noting that Ag shows comparable or even better performance for ECR to CO than Au.…”

Section: Introductionmentioning

confidence: 99%

Rational Design of Ag‐Based Catalysts for the Electrochemical CO₂ Reduction to CO: A Review

et al. 2019

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The selective electrochemical CO2 reduction (ECR) to CO in aqueous electrolytes has gained significant interest in recent years due to its capability to mitigate the environmental issues associated with CO2 emission and to convert renewable energy such as wind and solar power into chemical energy as well as its potential to realize the commercial use of CO2. In view of the thermodynamic stability and kinetic inertness of CO2 molecules, the exploitation of active, selective, and stable catalysts for the ECR to CO is crucial to promote the reaction efficiency. Indeed, plenty of electrocatalysts for the selective ECR to CO have been explored, of which Ag is known as the most promising electrocatalyst for large‐scale ECR to CO due to several competitive advantages including high catalytic performance, low price, and rich reserves compared with other metal counterparts. To provide useful guidelines for the further development of efficient catalysts for the ECR to CO, a comprehensive summary of the recent progress of Ag‐based electrocatalysts is presented in this Review. Different modification strategies of Ag‐based electrocatalysts are highlighted, including exposure of crystal facets, tuning of morphology and size, introduction of support materials, alloying with other metals, and surface modification with functional groups. The reaction mechanisms involved in these different modification strategies of Ag‐based electrocatalysts are also discussed. Finally, the prospects for the development of next‐generation Ag‐based electrocatalysts are proposed in an effort to facilitate the industrialization of ECR to CO.

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“…Nickel is able to form single Ni atoms (cations) on the surface of nitrogen-doped carbon [16], which could be the active sites for some hydrogenation [17] and CO 2 electroreduction [18][19][20][21] reactions. It is not known whether these Ni species can be active in the formic acid decomposition reaction.…”

Section: Introductionmentioning

confidence: 99%

Effects of the Carbon Support Doping with Nitrogen for the Hydrogen Production from Formic Acid over Ni Catalysts

et al. 2019

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Porous nitrogen-doped and nitrogen-free carbon materials possessing high specific surface areas (400–1000 m2 g−1) were used for deposition of Ni by impregnation with nickel acetate followed by reduction. The nitrogen-doped materials synthesized by decomposition of acetonitrile at 973, 1073, and 1173 K did not differ much in the total content of incorporated nitrogen (4–5 at%), but differed in the ratio of the chemical forms of nitrogen. An X-ray photoelectron spectroscopy study showed that the rise in the synthesis temperature led to a strong growth of the content of graphitic nitrogen on the support accompanied by a reduction of the content of pyrrolic nitrogen. The content of pyridinic nitrogen did not change significantly. The prepared nickel catalysts supported on nitrogen-doped carbons showed by a factor of up to two higher conversion of formic acid as compared to that of the nickel catalyst supported on the nitrogen-free carbon. This was related to stabilization of Ni in the state of single Ni2+ cations or a few atoms clusters by the pyridinic nitrogen sites. The nitrogen-doped nickel catalysts possessed a high stability in the reaction at least within 5 h and a high selectivity to hydrogen (97%).

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Unsaturated edge-anchored Ni single atoms on porous microwave exfoliated graphene oxide for electrochemical CO2

Cited by 251 publications

References 61 publications

Carbon dioxide electroreduction on single-atom nickel decorated carbon membranes with industry compatible current densities

Carbon dioxide electroreduction on single-atom nickel decorated carbon membranes with industry compatible current densities

Rational Design of Ag‐Based Catalysts for the Electrochemical CO₂ Reduction to CO: A Review

Effects of the Carbon Support Doping with Nitrogen for the Hydrogen Production from Formic Acid over Ni Catalysts

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Unsaturated edge-anchored Ni single atoms on porous microwave exfoliated graphene oxide for electrochemical CO2

Cited by 251 publications

References 61 publications

Carbon dioxide electroreduction on single-atom nickel decorated carbon membranes with industry compatible current densities

Carbon dioxide electroreduction on single-atom nickel decorated carbon membranes with industry compatible current densities

Rational Design of Ag‐Based Catalysts for the Electrochemical CO2 Reduction to CO: A Review

Effects of the Carbon Support Doping with Nitrogen for the Hydrogen Production from Formic Acid over Ni Catalysts

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Rational Design of Ag‐Based Catalysts for the Electrochemical CO₂ Reduction to CO: A Review