Phase-Engineered 1T–2H MoSe <sub>2</sub> Anchored on Ti <sub>3</sub> C <sub>2</sub> T <sub> <i>x</i> </sub> MXene as a Highly Efficient HER Catalyst
1T–2H MoSe2 was grown in situ on Ti3C2Tx MXene to develop a Pt-free HER electrocatalyst with enhanced interfacial charge transfer. The optimized composite delivers an overpotential of 68 mV at 10 mA cm–2 and a Tafel slope of 74 mV dec–1, along with excellent cycling stability of over 1000 cycles, showing negligible decay. The composite has an increased metallic 1T content and suppressed Mo6+ surface oxides. Electrochemical measurements reveal a substantially reduced charge-transfer resistance (Rct ∼ 31 Ω) and a large ECSA (Cdl = 22.6 mF cm–2). The catalyst showed improved activity, high TOF values, and a hydrogen-coverage profile consistent with a Volmer–Tafel pathway.
Authors
- Ravi Dutt (ORCID: https://orcid.org/0000-0001-7714-780X)
- Sajal Rai
- Ashish Jyoti Borah
- Anchal Srivastava
Institutions
- Shanghai Institute for Science of Science (CN)
- Banaras Hindu University (IN)
Publication Details
- Journal
- ACS Applied Energy Materials
- Published
- 2025-12-30
- DOI
- https://doi.org/10.1021/acsaem.5c03173
- Citations
- 1
- Primary Topic
- MXene and MAX Phase Materials
- Type
- article
- Field-Weighted Citation Impact
- 0.52