MoS 2 /CNT Anchored Ti 3 C 2 T x —MXene as a High‐Performance Ternary Material for Enhanced Electrocatalytic Hydrogen Generation

ABSTRACT Although various materials have been investigated as catalysts for electrocatalytic water splitting, ongoing research continues to focus on developing cost‐effective, efficient, and stable alternatives for hydrogen production. In this study, a high‐performance ternary hybrid material‐ MoS 2 /CNT anchored on Ti 3 C 2 T x MXene (MoS 2 /CNT/Ti 3 C 2 T x ) is introduced by optimizing the ratio of each constituent present. Ti 3 C 2 T x MXene is synthesized through the selective etching of Al layers from its MAX phase. MoS 2 /Ti 3 C 2 T x MXene nanostructures with different ratios (1:3, 1:1, and 3:1) are synthesized through sonication assisted physical mixing. By varying the amount of CNTs, three different compositions of MoS 2 /CNT are synthesized (SC 100, SC 150, and SC 200) via a simple hydrothermal method. The ternary MoS 2 /CNT/Ti 3 C 2 T x composite is synthesized via. ultrasonication. The resulting electrocatalyst exhibited excellent hydrogen evolution reaction (HER) activity, delivering a very low overpotential of 130 mV at 10 mA cm −2 and a Tafel slope of 150 mV dec −1 . Furthermore, the catalyst demonstrated remarkable durability, maintaining stable performance over 24 h of continuous operation. These findings highlight the potential of designing MoS 2 /CNT/Ti 3 C 2 T x hybrid with optimised individual constituents as a promising candidate for next‐generation HER applications.