High-performance Mo2Ti2C3Tx/MoS2 hybrid electrocatalyst for sustainable hydrogen production

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Hanan, Abdul and Numan, Arshid and Norhaffis Mustafa, Muhammad and Walvekar, Rashmi and Khalid, Mohammad (2025) High-performance Mo2Ti2C3Tx/MoS2 hybrid electrocatalyst for sustainable hydrogen production. International Journal of Hydrogen Energy, 161. 150533. ISSN 0360-3199 (https://doi.org/10.1016/j.ijhydene.2025.150533)

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Abstract

Hydrogen (H2) is widely regarded as a clean and sustainable energy carrier with the potential to mitigate environmental challenges associated with fossil fuel consumption. However, the scalability of electrochemical water splitting (EWS) for H2 production is constrained by the high cost and limited availability of efficient electrocatalysts such as platinum (Pt), which are critical for driving the hydrogen evolution reaction (HER). To address these challenges, there is growing interest in developing cost-effective, earth-abundant alternatives to precious metal-based electrocatalysts. In this study, we report the design and synthesis of a novel composite electrocatalyst comprising a double transition metal (DTM) MXene molybdenum titanium carbide (Mo2Ti2C3Tx) integrated with molybdenum disulfide (MoS2) for HER in alkaline media. By systematically optimizing the MoS2-to-MXene ratio, we identified the composite formulation MMS-2 as the most effective, achieving an overpotential of 298 mV at a current density of 10 mA/cm2. Additionally, MMS-2 exhibited a high electrochemical active surface area (ECSA) of 195 cm2 and demonstrated exceptional stability, maintaining a consistent performance over 24 h at 10, 20, and 30 mA/cm2 current densities. These results highlight the potential of the MMS-2 composite as a durable and effective electrocatalyst for advancing sustainable H2 production technologies.

ORCID iDs

Hanan, Abdul, Numan, Arshid, Norhaffis Mustafa, Muhammad, Walvekar, Rashmi ORCID logoORCID: https://orcid.org/0000-0001-8283-1278 and Khalid, Mohammad;
CORE (COnnecting REpositories)