NiS2 / MoS2 heterojunction nanomaterial, preparation method thereof and application thereof in alkaline hydrogen evolution reaction

By constructing NiS2/MoS2 heterojunction catalysts using Ni-BDC templates, the problem of insufficient active sites in non-precious metal catalysts in alkaline media is solved, achieving efficient and stable HER performance, which has promising prospects for industrial application.

CN122428323APending Publication Date: 2026-07-21QINGDAO BINHAI UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
QINGDAO BINHAI UNIV
Filing Date
2026-05-18
Publication Date
2026-07-21

AI Technical Summary

Technical Problem

Existing non-precious metal alkaline HER catalysts have a limited number of active sites in alkaline media, resulting in sluggish reaction kinetics, and the weak interfacial bonding of heterostructures affects catalytic performance.

Method used

Using a self-made Ni-BDC metal-organic framework as a template, a NiS2/MoS2 heterojunction catalyst was constructed in situ using a one-step hydrothermal sulfidation method, forming a tight interface and high specific surface area, which promoted charge transfer and exposure of active sites.

Benefits of technology

Excellent HER activity and stability were achieved in alkaline media, requiring only 68mV overpotential at a current density of 10mAcm-2, and able to operate stably for 100h at 100mAcm-2, outperforming commercial Pt/C catalysts.

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Abstract

The application relates to a transition metal sulfide heterostructure nanomaterial and a preparation method and application in electrocatalytic alkaline hydrogen evolution thereof. The nanomaterial prepared in the application is a NiS2 / MoS2 nanoparticle heterojunction electrocatalyst. The heterojunction interface can optimize the electronic structure and produce strong electronic interaction, thus reducing the energy barrier of water decomposition and being beneficial to improving the alkaline HER performance. Therefore, the NiS2 / MoS2 catalyst material has alkaline hydrogen evolution performance comparable to commercial platinum carbon, and a 58mV overpotential can realize 10mAcm ‑2 The preparation method is as follows: (1) hydrothermal reaction of nickel nitrate hexahydrate and 2-amino terephthalic acid in DMF solvent at 100 DEG C for 48h, centrifugal separation to obtain a Ni-BDC precursor; (2) dispersion of the Ni-BDC precursor, sodium molybdate dihydrate and thioacetamide in ethanol, hydrothermal reaction at 180 DEG C for 24h, and centrifugal separation to obtain the target catalyst. The preparation process of the application is convenient, the raw material cost is low, the prepared catalyst has excellent electrocatalytic activity and long-term stability, and can fully meet the severe requirements of industrial green hydrogen preparation.
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