Mo<sub>2</sub>C Ceramic Electrode Embedded with PtMo<sub>3</sub> Nanograins for Hydrogen Evolution Reaction at High Current Density
The scarcity and high price seriously hinder the large-scale industrial application of Pt as the preferred catalyst for the hydrogen evolution reaction (HER). A PtMo<sub>3</sub>@Mo<sub>2</sub>C catalytic electrode was designed based on a porous Mo<sub>2</sub>C ceramic membrane with finger-like holes, where PtMo<sub>3</sub> nanograins were uniformly embedded in the surface of the Mo<sub>2</sub>C grains by electrodeposition and thermal reduction. The loading of Pt is as small as 7.8 × 10<sup>-4</sup> g m<sup>-2</sup>. The electrode exhibits extraordinary HER catalytic performance with an overpotential of 189 mV to drive a current density of 2.0 A cm<sup>-2</sup> (acidic) and 212 mV to drive a current density of 1.0 A cm<sup>-2</sup> (alkaline). Under ultrahigh current densities, the electrode can operate stably for over 152 h, demonstrating high structural stability and catalytic stability. Theoretical calculations indicate that the formation of Mo<sub>2</sub>C(100)/PtMo<sub>3</sub>(200) can further optimize the electronic structure of the interface Pt atoms, thereby enhancing the HER performance.
Authors
- Chuntian Tan
- Sishi Huang
- Simeon Agathopoulos
- Xin Xu (ORCID: https://orcid.org/0000-0001-6547-255X)
- Anding Huang
- Haisen Huang
- Luyuan Hao
- Yang Yang (ORCID: https://orcid.org/0000-0002-1516-0627)
- Jiahao Li (ORCID: https://orcid.org/0000-0002-0434-130X)
- Feihong Wang (ORCID: https://orcid.org/0009-0008-9806-2280)
Institutions
- University of Science and Technology of China (CN)
- Anhui University (CN)
- University of Ioannina (GR)
- Hefei University (CN)
Publication Details
- Journal
- ACS Applied Materials & Interfaces
- Published
- 2025-08-29
- DOI
- https://doi.org/10.1021/acsami.5c07932
- Citations
- 2
- Primary Topic
- Electrocatalysts for Energy Conversion
- Type
- article
- Field-Weighted Citation Impact
- 0.73
Funders
- Natural Science Foundation of Anhui Province