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为解决传统电催化剂成本高、电解效率低等问题，推动规模化绿氢制备技术的发展，本研究通过结构设计与合成工艺优化，成功构建了基于过渡金属镍的硒化物异质结催化剂。采用两步水热法在泡沫镍(NF)基底上制备了具有界面结构的Ni_3Se2/NiSe@NF异质结双功能电催化剂。与单一物相催化剂(Ni_3Se2@NF和NiSe@NF)相比，Ni_3Se2/NiSe@NF异质界面处发生的强电子相互作用可以有效调控活性位点的电子结构，从而显著提升其在析氢反应(HER)和析氧反应(OER)中的催化活性。在1 mol/L的KOH电解液中，Ni_3Se2/NiSe@NF在电流密度为10 mA·cm-2时，HER和OER过电位分别为71 mV与207 mV,并表现出优异的稳定性(持续运行500 h后活性未发生明显衰减)。此外，以Ni_3Se2/NiSe@NF同时作为阳极和阴极组装的电解槽，在10 mA·cm-2电流密度下仅需1.52 V的槽压即可稳定运行。研究结果为开发低成本、高稳定性的电解水催化剂提供了新思路，有助于推进绿氢制备与可再生能源系统的融合应用，对实现“双碳”目标具有积极意义。
Abstract：In order to solve the problems of high cost and low electrolytic efficiency of traditional catalysts and realize the development of large-scale green hydrogen production technology, an interfacial catalyst based on transition metal was constructed by structural design and synthesis optimization in this study. The Ni_3Se2/NiSe@NF heterojunction bifunctional electrocatalyst with interface structure was prepared on a nickel foam(NF) substrate by a two-step hydrothermal method.The strong charge transfer at the heterogeneous interface of Ni_3Se2/NiSe@NF effectively optimizes the electronic structure of Ni_3Se2/NiSe@NF compared with the single interface(Ni_3Se2@NF and NiSe@NF), thus increasing the activities of hydrogen evolution reaction(HER) and oxygen evolution reaction(OER). The prepared Ni_3Se2/NiSe@NF has an overpotential of 71 and 207 mV(10 mA·cm-2) at 1 mol/L KOH, respectively, and has impressive stability(no significant degradation within 500 h). In addition, when the current density is 10 mA·cm-2, the current of the monolithic water decomposition electrolyzer with Ni_3Se2/NiSe@NF as anode and cathode can be reduced to 1.52 V. Therefore, this study provides a new idea for the development of low-cost and high-stability catalysts for water electrolysis, which is expected to accelerate the integration of green hydrogen preparation and renewable energy systems, and help realize the goal of “dual-carbon”.
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基本信息:
DOI：10.16152/j.cnki.xdxbzr.2026-01-006
中图分类号:TQ116.2;O643.36
引用信息:
[1]徐登基,李欣冉,田地,等.Ni_3Se_2/NiSe@NF双功能催化剂制备及其电催化产氢产氧性能研究[J].西北大学学报(自然科学版),2026,56(01):57-67.DOI:10.16152/j.cnki.xdxbzr.2026-01-006.
基金信息:
国家重点研发计划项目(2023YFB4004603); 国家自然科学基金(52025065)
2026-02-24
2026-02-24