Enhancing oxygen evolution reaction through channel-rich architecture and surface reconstruction in FeNiCo-based amorphous electrocatalysts

IF 5.3 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Research Bulletin Pub Date : 2025-06-09 DOI:10.1016/j.materresbull.2025.113612

Shuangshuang Jiang, Shuying Hao, Xuan Luo, Qinghuan Zhu, Yiming Luo, Qi Liu

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Abstract

Designing efficient and low-cost electrocatalysts is pivotal for advancing hydrogen production through electrocatalytic water splitting. This work develops channel-rich FeNiCo-based amorphous catalysts via one-step dealloying of FeNiCoCuP amorphous ribbons to enhance oxygen evolution reaction (OER). The structure evolution of channels under electrochemical conditions and its correlation with OER performance were systematically investigated. The optimized catalysts, characterized by their abundant channels, display superior electrocatalytic activity for OER, delivering a low overpotential of 266 mV at 10 mA cm^-2 with robust durability (>48 h). Such performance benefits from the abundance of active sites provided by the channel-rich structure and the synergistic effect of multiple transition metals. Furthermore, the local structural reconstruction on the sample surface further facilitated OER kinetics during the electrochemical water-splitting process, as evidenced by the conversion of external channels into nanoporous structures. These studies offer valuable insights into the design of surface architectures in amorphous alloy electrocatalysts.

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通过富通道结构和表面重构增强fenico基非晶电催化剂的析氧反应

设计高效、低成本的电催化剂是推进电催化水裂解制氢的关键。本研究通过一步脱合金FeNiCoCuP非晶带，开发了富通道的FeNiCoCuP非晶催化剂，以增强析氧反应（OER）。系统地研究了电化学条件下通道的结构演变及其与OER性能的关系。优化后的催化剂具有丰富的通道，对OER表现出优异的电催化活性，在10 mA cm-2下提供266 mV的低过电位，并具有良好的耐久性（48小时）。这种性能得益于富通道结构提供的丰富的活性位点和多种过渡金属的协同效应。此外，样品表面的局部结构重构进一步促进了电化学水分解过程中的OER动力学，外部通道转化为纳米孔结构证明了这一点。这些研究为非晶合金电催化剂的表面结构设计提供了有价值的见解。

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来源期刊

Materials Research Bulletin 工程技术-材料科学：综合

CiteScore

9.80

自引率

5.60%

发文量

372

审稿时长

42 days

期刊介绍： Materials Research Bulletin is an international journal reporting high-impact research on processing-structure-property relationships in functional materials and nanomaterials with interesting electronic, magnetic, optical, thermal, mechanical or catalytic properties. Papers purely on thermodynamics or theoretical calculations (e.g., density functional theory) do not fall within the scope of the journal unless they also demonstrate a clear link to physical properties. Topics covered include functional materials (e.g., dielectrics, pyroelectrics, piezoelectrics, ferroelectrics, relaxors, thermoelectrics, etc.); electrochemistry and solid-state ionics (e.g., photovoltaics, batteries, sensors, and fuel cells); nanomaterials, graphene, and nanocomposites; luminescence and photocatalysis; crystal-structure and defect-structure analysis; novel electronics; non-crystalline solids; flexible electronics; protein-material interactions; and polymeric ion-exchange membranes.