通过原位溶出纳米CoFe合金修饰钙钛矿表面结构，实现高效析氧反应

IF 2.7 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Letters Pub Date : 2025-06-11 DOI:10.1016/j.matlet.2025.138920

Hexuan Zhou , Jingang Qi , Juntao Liu , Sifan Qiao , Danyang Liu , Ziyu Zhou , Dan Lin , Lidan Tang , Bing Wang , Wei Zhang

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引用次数: 0

摘要

原位溶出是设计金属-陶瓷复合材料的关键策略，可提高各种电催化反应的活性。脉冲电流（PEC）的概念可以促进材料的溶出行为，提高材料的合成速度。本研究通过超快PEC法合成原位生长修饰的CoFe纳米粒子La0.95Fe0.8Co0.2O3，作为活性持久的OER催化剂。这项工作弥补了PEC可用于促进双金属析出的空白，并扩大了作为合成高性能纳米催化剂的成本效益策略的潜力。

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Modified perovskite surface structure through in situ exsolution of CoFe alloy nanoparticles for efficient oxygen evolution reaction

In-situ exsolution represents a crucial strategy for designing metal-ceramic composite yielding improved activity for various electrocatalytic reactions. The concept of the pulsed electric current (PEC) can promote exsolution behavior and enhance material’s synthesis speed. In this study, CoFe nanoparticles in situ growth and modification La_0.95Fe_0.8Co_0.2O₃ is synthesized via an ultrafast PEC method as an active and durable OER catalyst. This work makes up the gap where PEC can be used to facilitate bimetallic exsolution and broadens the potential as a cost-effective strategy for synthesizing high-performance nanocatalysts.

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来源期刊

Materials Letters 工程技术-材料科学：综合

CiteScore

5.60

自引率

3.30%

发文量

1948

审稿时长

50 days

期刊介绍： Materials Letters has an open access mirror journal Materials Letters: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. Materials Letters is dedicated to publishing novel, cutting edge reports of broad interest to the materials community. The journal provides a forum for materials scientists and engineers, physicists, and chemists to rapidly communicate on the most important topics in the field of materials. Contributions include, but are not limited to, a variety of topics such as: • Materials - Metals and alloys, amorphous solids, ceramics, composites, polymers, semiconductors • Applications - Structural, opto-electronic, magnetic, medical, MEMS, sensors, smart • Characterization - Analytical, microscopy, scanning probes, nanoscopic, optical, electrical, magnetic, acoustic, spectroscopic, diffraction • Novel Materials - Micro and nanostructures (nanowires, nanotubes, nanoparticles), nanocomposites, thin films, superlattices, quantum dots. • Processing - Crystal growth, thin film processing, sol-gel processing, mechanical processing, assembly, nanocrystalline processing. • Properties - Mechanical, magnetic, optical, electrical, ferroelectric, thermal, interfacial, transport, thermodynamic • Synthesis - Quenching, solid state, solidification, solution synthesis, vapor deposition, high pressure, explosive