J. Mater. Sci. Technol. ›› 2026, Vol. 256: 53-67.DOI: 10.1016/j.jmst.2025.06.058

• Research Article • Previous Articles     Next Articles

Regulating intermediates adsorption/desorption behavior in multilayered 2D MoS2-(Ni, Fe)Sx/rGO heterostructure via built-in electric field-driven electron transfer for water splitting and zinc-air battery

Xinyi Wanga, Adekunle Adedapo Obisanyaa, Li Houa,*, Xiwen Taoa, Yuan Gaoa, Jing Jina, Keju Suna,*, Yanfeng Wanga, Faming Gaoa,b,*   

  1. aHebei Key Laboratory of Applied Chemistry, State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China;
    bCollege of Chemical Engineering and Materials Science, Tianjin University of Science and Technology, Tianjin 300457, China
  • Received:2025-03-22 Revised:2025-06-06 Accepted:2025-06-06 Published:2026-06-10 Online:2025-09-08
  • Contact: *E-mail addresses: holy@ysu.edu.cn (L. Hou), kjsun@ysu.edu.cn (K. Sun), fmgao@ysu.edu.cn (F. Gao)

Abstract: Deliberate construction of 2D/2D heterostructure with interfacial built-in electric field (BIEF) is a reliable strategy to address sluggish reaction kinetics through electronic structure optimization and reaction microenvironment modulation. Herein, a novel multilayered MoS2-(Ni, Fe)Sx/rGO hierarchical hybrid was synthesized via interfacial BIEF and dimensional engineering, featuring metallic-phase MoS2 (1T-MoS2) nanosheets and (Ni, Fe)Sx nanoflakes vertically anchored on rGO. This 2D/2D heterostructure allows large interface contact area via interfacial S-bridge spatial confinement, which provides abundant transport pathways for BIEF-derived large electron transfer from (Ni, Fe)Sx to 1T-MoS2, thus favoring rapid reaction kinetics. Benefiting from the strong interfacial electron coupling and synergistic co-catalytic effects, the as-obtained MoS2-(Ni, Fe)Sx/rGO displays extraordinary multifunctional catalytic activity, as confirmed in extremely low overpotentials at 10 mA cm-2 for HER (38 mV) and OER (213 mV), along with a positive half-wave potential for ORR (0.82 V), thus delivering excellent efficiency and stability in water splitting and zinc-air batteries. Combining theoretical calculations and the in-situ characterizations, the reconfiguration of electronic structure and appropriate d-band center, driven by asymmetrical charge distributions arising from the interface-induced BIEF, endows key intermediates with balanced adsorption/desorption capability, thereby enhancing intrinsic catalytic activity and reducing reaction energy barriers.

Key words: Hierarchical heterostructure, Built-in electric field, Asymmetric charge distribution, Synergistic co-catalytic effect, Multifunctional catalyst