One-step direct laser-induced Mo3C2/rGO composite for hydrogen evolution reaction

IF 4.8 2区材料科学 Q1 MATERIALS SCIENCE, CHARACTERIZATION & TESTING

Materials Characterization Pub Date : 2025-04-09 DOI:10.1016/j.matchar.2025.115031

Yuanyuan Huang , Changlin Yang , Heping Xie , Mingfu Xiao , Xiaoqi Zhou , Yi Tian , Juntao Zhu , Shouyong Xie , Zirong Tang , Yiying Zhu

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引用次数: 0

Abstract

The development of non-precious metal-based electrocatalysts with high activity and stability is essential for HER reactions. Molybdenum carbides are emerging as promising low-cost electrocatalysts for the HER because of their platinum-like catalytic properties. Here, a one-step direct laser-induced fabrication is developed to synthesize the Mo₃C₂/rGO composite. Owing to the self-assembly process, a gelatin-facilitated Mo-ion GO matrix was transformed into hierarchically porous Mo₃C₂/rGO, which led to a catalytic surface enriched with defects. The interaction between various phases and the induced lattice defects in Mo₃C₂/rGO substantially boosts the hydrogen evolution reaction (HER) performance, which shows low overpotentials of 101 mV at a current density of 10 mA cm⁻², a minimal Tafel slope of 52 mV dec⁻¹, and remarkable stability lasting over 1000 cycles. This work offers significant guidance for developing high-efficiency HER catalysts through nanoscale interfacial engineering.

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来源期刊

Materials Characterization 工程技术-材料科学：表征与测试

CiteScore

7.60

自引率

8.50%

发文量

746

审稿时长

36 days

期刊介绍： Materials Characterization features original articles and state-of-the-art reviews on theoretical and practical aspects of the structure and behaviour of materials. The Journal focuses on all characterization techniques, including all forms of microscopy (light, electron, acoustic, etc.,) and analysis (especially microanalysis and surface analytical techniques). Developments in both this wide range of techniques and their application to the quantification of the microstructure of materials are essential facets of the Journal. The Journal provides the Materials Scientist/Engineer with up-to-date information on many types of materials with an underlying theme of explaining the behavior of materials using novel approaches. Materials covered by the journal include: Metals & Alloys Ceramics Nanomaterials Biomedical materials Optical materials Composites Natural Materials.