Tuning the spin state of Fe single atoms by Pd nanoclusters enables robust oxygen reduction with dissociative pathway

Chem, Journal Year: 2022, Volume and Issue: 9(1), P. 181 - 197

Published: Oct. 27, 2022

Language: Английский

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Operando characterization techniques for electrocatalysis

Energy & Environmental Science, Journal Year: 2020, Volume and Issue: 13(11), P. 3748 - 3779

Published: Jan. 1, 2020

Significant progress toward the understanding of electrochemical process has been achieved in past decades, owning to advancements operando characterization techniques.

Language: Английский

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What is the Real Origin of the Activity of Fe–N–C Electrocatalysts in the O₂ Reduction Reaction? Critical Roles of Coordinating Pyrrolic N and Axially Adsorbing Species

Journal of the American Chemical Society, Journal Year: 2022, Volume and Issue: 144(39), P. 18144 - 18152

Published: Sept. 22, 2022

Fe–N–C electrocatalysts have emerged as promising substitutes for Pt-based catalysts the oxygen reduction reaction (ORR). However, their real catalytic active site is still under debate. The underlying roles of different types coordinating N including pyridinic and pyrrolic in performance require thorough clarification. In addition, how to understand pH-dependent activity another urgent issue. Herein, we comprehensively studied 13 N-coordinated FeNxC configurations corresponding ORR through simulations which mimic realistic electrocatalytic environment on basis constant-potential implicit solvent models. We demonstrate that contributes a higher than N, FeN4C exhibits highest acidic media. Meanwhile, situ transformation *O-FeN4C *OH-FeN4C clarifies origin alkaline These findings can provide indispensable guidelines rational design better durable catalysts.

Language: Английский

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Single‐Atom Catalysts: A Sustainable Pathway for the Advanced Catalytic Applications

Small, Journal Year: 2021, Volume and Issue: 17(16)

Published: Feb. 24, 2021

A heterogeneous catalyst is a backbone of modern sustainable green industries; and understanding the relationship between its structure properties key for advancement. Recently, many upscaling synthesis strategies development variety respectable control atomically precise catalysts are reported explored various important applications in catalysis energy environmental remediation. Precise atomic-scale has allowed to significantly increase activity, selectivity, some cases stability. This approach proved be relevant related technologies such as fuel cell, chemical reactors organic synthesis, Therefore, this review aims critically analyze recent progress on single-atom (SACs) application oxygen reduction reaction, evolution hydrogen and/or electrochemical transformations. Finally, opportunities that may open up future summarized, along with suggesting new possible exploitation SACs.

Language: Английский

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Atomic Fe-Zn dual-metal sites for high-efficiency pH-universal oxygen reduction catalysis

Nano Research, Journal Year: 2020, Volume and Issue: 14(5), P. 1374 - 1381

Published: Nov. 9, 2020

Language: Английский

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