Construction of Co9S8-ReS2Ni3S2/NF catalyst and its electrocatalytic water splitting performance

IF 5.6 3区材料科学 Q1 ELECTROCHEMISTRY

Electrochimica Acta Pub Date : 2026-05-01 Epub Date: 2026-02-18 DOI:10.1016/j.electacta.2026.148474

Xueying Lu , Xu Han , Dan Zhao , Tianhao Wang , Yinan Liu , Jing Hu , Yitao He

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Abstract

Hydrogen energy, featuring high energy density and environmental friendliness, is a highly promising renewable clean energy carrier. Electrolytic water splitting for hydrogen production is effective for high-purity H₂, with efficient and stable electrocatalysts being the key to efficiency optimization. Rhenium-based catalysts attract attention due to their unique electronic structure, high activity, and broad pH adaptability, but enhancing their hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) performance remains a challenge. This study reports a two-step hydrothermal method to in situ grow Co₉S₈-ReS₂Ni₃S₂ on nickel foam. Co incorporation induces “coral-like” nanostructures, increasing active surface area and suppressing agglomeration, while strong ReS₂Co₉S₈ interfacial coupling optimizes charge redistribution. The catalyst exhibits overpotentials of 89 mV (HER) and 268 mV (OER) at 10 mA cm^-2, achieves 10 mA cm^-2 at 1.61 V for overall water splitting, and maintains stability for 100 h, providing new insights for high-performance electrocatalysts.

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Co9S8-ReS2-Ni3S2/NF催化剂的构建及其电催化水裂解性能

氢能具有能量密度高、环境友好等特点，是一种极具发展前景的可再生清洁能源载体。电解水裂解制氢是制备高纯氢气的有效方法，高效稳定的电催化剂是优化效率的关键。铼基催化剂因其独特的电子结构、高活性和广泛的pH适应性而备受关注，但提高其析氢反应（HER）和析氧反应（OER）性能仍然是一个挑战。本研究采用两步水热法在泡沫镍（NF）上原位生长Co9S8-ReS2-Ni3S2/NF。Co的掺入诱导了“珊瑚状”纳米结构，增加了活性表面积，抑制了团聚，而强ReS2-Co9S8界面耦合优化了电荷再分配。该催化剂在10 mA cm-2时表现出89 mV （HER）和268 mV （OER）的过电位，在1.61 V时达到10 mA cm-2，并保持100 h的稳定性，为高性能电催化剂提供了新的见解。

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来源期刊

Electrochimica Acta 工程技术-电化学

CiteScore

11.30

自引率

6.10%

发文量

1634

审稿时长

41 days

期刊介绍： Electrochimica Acta is an international journal. It is intended for the publication of both original work and reviews in the field of electrochemistry. Electrochemistry should be interpreted to mean any of the research fields covered by the Divisions of the International Society of Electrochemistry listed below, as well as emerging scientific domains covered by ISE New Topics Committee.