Coordination environment engineering of single-atom catalysts for the oxygen reduction reaction

Zhang, Ying; Wen, Zi; Li, Jian; Yang, Chuncheng; Jiang, Qing

doi:10.1039/d3qm00146f

Cited by 12 publications

(5 citation statements)

References 199 publications

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“…86 Therefore, selectively integrating ISEs can immediately enhance ZAB performance. 87 The dual ISEE, equipped with a tuneable electronic structure and coordination environment, endows the ZAB with remarkable ORR and OER performances. For a deeper insight into the advantages, challenges, and improvement strategies, some representative studies reported during the last three years are surveyed below, categorised as Fe/Co-, Fe/Ni-, and Co/Ni-based electrocatalysts.…”

Section: Isees Application In Zabsmentioning

confidence: 99%

Recent progress in iron-series-element-based electrocatalysts for Zn–air batteries

Gao,

Wang,

Liu

et al. 2024

Mater. Chem. Front.

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Section: Isees Application In Zabsmentioning

confidence: 99%

Recent progress in iron-series-element-based electrocatalysts for Zn–air batteries

Gao,

Wang,

Liu

et al. 2024

Mater. Chem. Front.

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“…In brief, achieving a comprehensive assessment of the environments surrounding M-N-C SACs necessitates the integration of multiple advanced characterization techniques. 112,113 A standout among these is aberration-corrected HAADF-STEM, a potent tool for visualizing SAs and their associated species, particularly those linked to metals. This technique offers valuable insights into spatial distribution and arrangement, thereby enhancing our understanding of the overall composition.…”

Section: Xas Analysismentioning

confidence: 99%

Recent advances in Fe‐N‐C single‐atom site coupled synergistic catalysts for boosting oxygen reduction reaction

Srinivas,

Chen,

et al. 2024

Electron

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Metal–air batteries, fuel cells, and electrochemical H2O2 production currently attract substantial consideration in the energy sector owing to their efficiency and eco‐consciousness. However, their broader use is hindered by the complex oxygen reduction reaction (ORR) that occurs at cathodes and involves intricate electron transfers. Despite the significant ORR performance of platinum‐based catalysts, their high cost, operational limitations, and susceptibility to methanol poisoning hinder broader implementation. This emphasizes the need for efficient non‐precious metal‐based ORR electrocatalysts. A promising approach involves utilizing single‐atom catalysts (SACs) featuring metal–nitrogen–carbon (M‐N‐C) coordination sites. SACs offer advantages such as optimal utilization of metal atoms, uniform active centers, precisely defined catalytic sites, and robust metal–support interactions. However, the symmetrical electron distribution around the central metal atom of a single‐atom site (M‐N4) often results in suboptimal ORR performance. This challenge can be addressed by carefully tailoring the surrounding environment of the active center. This review specifically focuses on recent advancements in the Fe‐N4 environment within Fe‐N‐C SACs. It highlights the promising strategy of coupling Fe‐N4 sites with metal clusters and/or nanoparticles, which enhances intrinsic activity. By capitalizing on the interplay between Fe‐N4 sites and associated species, overall ORR performance improved. The review combines findings from experimental studies and density functional theory simulations, covering synthesis strategies for Fe‐N‐C coupled synergistic catalysts, characterization techniques, and the influence of associated particles on ORR activity. By offering a comprehensive outlook, the review aims to encourage research into high‐efficiency Fe single‐atom sites coupled synergistic catalysts for real‐world applications in the coming years.

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“…27–29 Notably, the ORR performance can be optimized by the modification of the coordination environments of atomic metal centers to regulate their electronic structures. 30 In recent developments, metal atoms, nanoclusters, and even nanoparticles have been coupled with Fe/Co–N x in Fe/Co–N–C SACs. This integration has yielded an enhanced electrocatalytic ORR performance of the obtained composites and promoted other functionalities, such as the oxygen evolution reaction (OER).…”

Section: Introductionmentioning

confidence: 99%

Atomically dispersed Fe/Co–N–C and their composites for proton exchange membrane fuel cells

Meng,

An,

Hou

et al. 2024

Mater. Chem. Front.

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Coordination environment engineering of single-atom catalysts for the oxygen reduction reaction

Abstract: Benefiting from high efficiency and environmental friendliness, Zn-air batteries, fuel cells and the electrochemical H2O2 production have attracted significant attentions in the energy field. However, the oxygen reduction reaction (ORR),...

Cited by 12 publications

References 199 publications

Recent progress in iron-series-element-based electrocatalysts for Zn–air batteries

Recent progress in iron-series-element-based electrocatalysts for Zn–air batteries

Recent advances in Fe‐N‐C single‐atom site coupled synergistic catalysts for boosting oxygen reduction reaction

Atomically dispersed Fe/Co–N–C and their composites for proton exchange membrane fuel cells

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