Accelerated O─O Bond Cleavage and Stabilized Fe Sites by Synergistic d─p Fe─Sn Dual‐Atom Pair for Enhanced Oxygen Reduction

Zhang, Chao; Guo, Yushan; Chen, Chang; Chen, Chang; Zhuang, Zewen; You, Shengping; Yu, Mengting; Tan, Xin; Sun, Kaian; Peng, Qing; Yan, Wei; Zhang, Jiujun; Chen, Chen; Chen, Chen

doi:10.1002/anie.202524265

articleAngewandte Chemie International EditionJan 4, 2026BRONZE OA

Accelerated O─O Bond Cleavage and Stabilized Fe Sites by Synergistic d─p Fe─Sn Dual‐Atom Pair for Enhanced Oxygen Reduction

CZChao ZhangYGYushan GuoCCChang Chen CCChang Chen ZZZewen Zhuang

Fuzhou University · Institute of Process Engineering · +1 more institution

PubMed

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Abstract

Abstract Atomically dispersed FeNC materials have emerged as the promising catalysts for replacing precious Pt‐based catalysts in the oxygen reduction reaction (ORR). However, their widespread application remains limited by sluggish kinetics and the long‐term stability of the isolated Fe single‐atom sites. Herein, we report a highly active and durable catalyst (FeSnNC) featuring d‐block iron and p‐block‐metal tin dual‐atom pair sites. In situ infrared spectroscopy and X‐ray absorption spectroscopy, together with ab initio molecular dynamics and density functional theory calculations reveal that the Fe─Sn dual‐atom pair sites enable the bridge absorption of O 2 and facilitate direct O─O bond cleavage. The…

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Topics & keywords

Topics

Keywords

Catalysis
Density functional theory
Tin
Desorption
Bond cleavage
Metal
Absorption (acoustics)
Oxygen

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