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April 18, 2026ACS Applied Nano Materials

Morphology Regulation of MoSe 2 via Salt-Assisted CVD for Enhanced Hydrogen Evolution Catalysis

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Authors

YHYouyuan HeHunan UniversityYTYawen TanHunan UniversityZMZongying MaHunan University

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Overview

Demonstrates improved hydrogen evolution performance in MoSe2 through salt-assisted synthesis, indicating a pathway for efficient electrocatalysts.

Key Points

  • The central aim is to regulate the morphology and layer number of MoSe2 to enhance its catalytic efficiency for hydrogen evolution.
  • Developed a salt-assisted chemical vapor deposition (CVD) method for MoSe2 synthesis.
  • Adjusted salt dosage and growth temperature to control morphology and layer number.
  • Conducted mechanistic investigations on nucleation and growth kinetics.
  • Performed on-chip electrochemical tests for the hydrogen evolution reaction (HER).
  • Achieved diverse MoSe2 morphologies, including triangular and dendritic structures.
  • Dendritic MoSe2 exhibited optimal HER performance with an overpotential of 228 mV at −10 mA cm–2.
  • The Tafel slope for dendritic MoSe2 was measured at 117 mV dec–1.
  • Findings validated the structure–activity relationship emphasizing that morphological regulation enhances HER more than layer number adjustment.

Cite This Study

He et al. (2026) studied this question.

synapsesocial.com/papers/69e3211640886becb65403a4https://doi.org/10.1021/acsanm.6c00922
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