Adjacent Fe Site boosts electrocatalytic oxygen evolution at Co site in single-atom-catalyst through a dual-metal-site design

Chen, Changli; Sun, Mingzi; Zhang, Fang; Li, Haijing; Sun, Mengru; Fang, Pin; Song, Tinglu; Dong, Juncai; Rosen, Brian A.; Chen, Pengwan; Huang, Bolong; Li, Yujing

doi:10.1039/d2ee03930c

Cited by 115 publications

(30 citation statements)

References 71 publications

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“…In this subsection, the surface reactions and impedance changes with potential polarization were directly observed by in situ EIS spectra. At low potentials, the electrode surface involves the adsorption of OH ‒ and gradually the oxidation of Co–O species; [ 36 ] and then at around 1.25–1.35 V, the oxidized surface was subjected to oxidation of glycerol, which is much easier to oxidize than water. At around 1.45–1.50 V, the potential is large enough to drive OER.…”

Section: Resultsmentioning

confidence: 99%

Polyhedral Coordination Determined Co‐O Activity for Electrochemical Oxidation of Biomass Alcohols

Xi,

Zang,

Sun

et al. 2023

Advanced Energy Materials

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Earth‐abundant transition metal oxides are promising electrocatalysts for oxidation of biomass alcohols. Here, CoO and Co3O4 are selected as representative cobalt oxide catalysts and grown on carbon fiber paper (CFP) electrodes to reveal the interplay between electronic structure and catalytic activity of catalysts for oxidation of glycerol, diols, and monohydric alcohols. In situ electrochemical tests elucidate that the CoO/CFP electrode has lower interfacial impedance, higher charge transfer, faster oxidation rate, and thereby the higher catalytic activity for alcohol oxidation than the Co3O4/CFP electrode. Especially for glycerol oxidation, the CoO/CFP electrode only requires 1.32 V to reach 10 mA cm−2, the potential is 120 mV lower than that for the Co3O4/CFP electrode. The CoO/CFP electrode can also produce value‐added products such as formate, acetate, and glycolate with high selectivity and efficiency at low energy consumptions from oxidation of biomass alcohols. Theoretical calculations further confirm the dominant role of octahedrally coordinated Co‐O sites in adsorption, activation, and oxidation of C3‐C1 alcohols. This work sheds light on the design of highly efficient transition metal oxide catalysts for oxidation of alcohols by populating octahedral sites in the crystal structure.

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Section: Resultsmentioning

confidence: 99%

Polyhedral Coordination Determined Co‐O Activity for Electrochemical Oxidation of Biomass Alcohols

Xi,

Zang,

Sun

et al. 2023

Advanced Energy Materials

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“…S8(c) and (d),† a trend of the gradual oxidation of the metal elements Co and Fe during the alkaline OER was observed. 54 TEM and XRD tests were also performed on C 5 F 5 -NS after the stability tests to gain more insights. The TEM images in Fig.…”

Section: Resultsmentioning

confidence: 99%

Active-site-enriched dendritic crystal Co/Fe-doped Ni₃S₂electrocatalysts for efficient oxygen evolution reaction

Cui

Zhang

et al. 2023

Dalton Trans.

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“…The usual method is to compare the dual active sites with a single active site. An improved method has been proposed in some papers, [68,151,314] where the heterogeneous dual active sites are compared with monometallic dual active sites. That is, one of the metals in the heterogeneous dual active sites is replaced rather than removed directly.…”

Section: Summary and Perspectivementioning

confidence: 99%

Dual‐Active‐Sites Single‐Atom Catalysts for Advanced Applications

Zhang

Hou

Zhai

et al. 2023

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Dual‐Active‐Sites Single‐Atom catalysts (DASs SACs) are not only the improvement of SACs but also the expansion of dual‐atom catalysts. The DASs SACs contains dual active sites, one of which is a single atomic active site, and the other active site can be a single atom or other type of active site, endowing DASs SACs with excellent catalytic performance and a wide range of applications. The DASs SACs are categorized into seven types, including the neighboring mono metallic DASs SACs, bonded DASs SACs, non‐bonded DASs SACs, bridged DASs SACs, asymmetric DASs SACs, metal and nonmetal combined DASs SACs and space separated DASs SACs. Based on the above classification, the general methods for the preparation of DASs SACs are comprehensively described, especially their structural characteristics are discussed in detail. Meanwhile, the in‐depth assessments of DASs SACs for variety applications including electrocatalysis, thermocatalysis and photocatalysis are provided, as well as their unique catalytic mechanism are addressed. Moreover, the prospects and challenges for DASs SACs and related applications are highlighted. The authors believe the great expectations for DASs SACs, and this review will provide novel conceptual and methodological perspectives and exciting opportunities for further development and application of DASs SACs.

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Adjacent Fe Site boosts electrocatalytic oxygen evolution at Co site in single-atom-catalyst through a dual-metal-site design

Abstract: Co-based single-atom-catalyst has been discovered as a possible candidate for the oxygen evolution reaction (OER), whereby further improvements in performance with only Co metal sites are still challenging with limited...

Cited by 115 publications

References 71 publications

Polyhedral Coordination Determined Co‐O Activity for Electrochemical Oxidation of Biomass Alcohols

Polyhedral Coordination Determined Co‐O Activity for Electrochemical Oxidation of Biomass Alcohols

Active-site-enriched dendritic crystal Co/Fe-doped Ni₃S₂electrocatalysts for efficient oxygen evolution reaction

Dual‐Active‐Sites Single‐Atom Catalysts for Advanced Applications

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Adjacent Fe Site boosts electrocatalytic oxygen evolution at Co site in single-atom-catalyst through a dual-metal-site design

Abstract: Co-based single-atom-catalyst has been discovered as a possible candidate for the oxygen evolution reaction (OER), whereby further improvements in performance with only Co metal sites are still challenging with limited...

Cited by 115 publications

References 71 publications

Polyhedral Coordination Determined Co‐O Activity for Electrochemical Oxidation of Biomass Alcohols

Polyhedral Coordination Determined Co‐O Activity for Electrochemical Oxidation of Biomass Alcohols

Active-site-enriched dendritic crystal Co/Fe-doped Ni3S2electrocatalysts for efficient oxygen evolution reaction

Dual‐Active‐Sites Single‐Atom Catalysts for Advanced Applications

Contact Info

Product

Resources

About

Active-site-enriched dendritic crystal Co/Fe-doped Ni₃S₂electrocatalysts for efficient oxygen evolution reaction