A high-performance nitrogen-rich ZIF8-derived \(\textrm{Fe}-\textrm{Co}-\textrm{NC}\) electrocatalyst for the oxygen reduction reaction

IF 1.6 4区化学 Q3 CHEMISTRY, INORGANIC & NUCLEAR

Transition Metal Chemistry Pub Date : 2025-03-19 DOI:10.1007/s11243-024-00629-z

Yuqin Wang, Lizi He, Ning Han, Lishuang Li, Meiyang Wang

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引用次数: 0

Abstract

It is of great practical significance to explore and prepare cheap, high-performance, and stable catalysts for oxygen reduction reaction (ORR), but it is still in progress at present. Herein, a straightforward evaporation–pyrolysis strategy is designed for the preparation of 3D porous electrocatalysts (denoted as \(\textrm{Fe}-\textrm{Co}-\textrm{NC}\), which represented carbonization products at °C) made of carbon nanoparticles combined with metallic Fe-Co-doped N-enriched bridged carbon nanotube by carbonization of a pristine ZIF8 as highly efficient and durable ORR electrocatalysts. The obtained Fe–Co–NC structure possesses 3D open porous texture, abundant active sites, desired nitrogen bonding type, and high specific surface area, providing them with excellent ORR activity. The optimal performing \(\textrm{Fe}-\textrm{Co}-\textrm{NC}\) catalyst presents an outstanding ORR performance in terms of a high onset potential (\(\textrm{E}_{\text{ onset } }\)) of 0.96 V (vs. RHE) and half-wave potential (\(\textrm{E}_{1 / 2}\)) of 0.86 V (vs. RHE), respectively, possible to rival those of the commercially available \(\textrm{Pt} / \textrm{C}\) in an alkaline electrolyte solution. Besides, the \(\textrm{Fe}-\textrm{Co}-\textrm{NC}\) catalyst manifests better stability than those of commercially available \(\textrm{Pt} / \textrm{C}\), which is of importance for the optimization and characterization of novel electrocatalysts originated from non-precious metals.

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一种高性能富氮zif8衍生的\(\textrm{Fe}-\textrm{Co}-\textrm{NC}\)氧还原反应电催化剂

探索和制备廉价、高性能、稳定的氧还原反应（ORR）催化剂具有重要的现实意义，但目前还处于摸索阶段。本文设计了一种简单的蒸发热解策略，通过原始的ZIF8碳化，将碳纳米颗粒与金属fe - co掺杂的富n桥式碳纳米管结合，制备出高效耐用的ORR电催化剂（表示为\(\textrm{Fe}-\textrm{Co}-\textrm{NC}\)，代表°C下的碳化产物）。得到的Fe-Co-NC结构具有三维开放多孔结构、丰富的活性位点、理想的氮键类型和高比表面积，具有优异的ORR活性。性能最优的\(\textrm{Fe}-\textrm{Co}-\textrm{NC}\)催化剂表现出出色的ORR性能，其高起始电位（\(\textrm{E}_{\text{ onset } }\)）分别为0.96 V（相对于RHE）和0.86 V（相对于RHE）的半波电位（\(\textrm{E}_{1 / 2}\)），在碱性电解质溶液中可以与市售的\(\textrm{Pt} / \textrm{C}\)相媲美。此外，\(\textrm{Fe}-\textrm{Co}-\textrm{NC}\)催化剂比市售的\(\textrm{Pt} / \textrm{C}\)催化剂表现出更好的稳定性，这对于非贵金属电催化剂的优化和表征具有重要意义。

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来源期刊

Transition Metal Chemistry 化学-无机化学与核化学

CiteScore

3.60

自引率

0.00%

发文量

审稿时长

1.3 months

期刊介绍： Transition Metal Chemistry is an international journal designed to deal with all aspects of the subject embodied in the title: the preparation of transition metal-based molecular compounds of all kinds (including complexes of the Group 12 elements), their structural, physical, kinetic, catalytic and biological properties, their use in chemical synthesis as well as their application in the widest context, their role in naturally occurring systems etc. Manuscripts submitted to the journal should be of broad appeal to the readership and for this reason, papers which are confined to more specialised studies such as the measurement of solution phase equilibria or thermal decomposition studies, or papers which include extensive material on f-block elements, or papers dealing with non-molecular materials, will not normally be considered for publication. Work describing new ligands or coordination geometries must provide sufficient evidence for the confident assignment of structural formulae; this will usually take the form of one or more X-ray crystal structures.