Highly Dispersed Bimetallic Nanoparticles Supported on Titanium Carbides for Remarkable Hydrogen Release from Hydrous Hydrazine

The catalytic decomposition of hydrous hydrazine (N 2 H 4 ⋅ H 2 O) is considered a promising candidate for the fuel‐cell field, but sluggish reaction kinetics dramatically impede its practical application. In this study, bimetallic RhNi nanoparticles were successfully anchored on titanium carbides (MXene) by a one‐step wet‐chemical method to build superior catalysts for the decomposition of hydrous hydrazine (N 2 H 4 ⋅ H 2 O), a compound that can be used for chemical hydrogen storage. The synthesized RhNi/MXene catalysts were characterized by X‐ray photoelectron spectroscopy, transmission electron microscopy, high‐angle annular dark‐field scanning transmission electron microscopy, and inductively coupled plasma atomic emission spectroscopy. As a result of the particles size and a synergistic effect, the Rh 0.8 Ni 0.2 /MXene nanocatalyst demonstrated 100 % selectivity to H 2 , excellent stability, and high reaction kinetics with a turnover frequency of 857 h −1 for the decomposition of N 2 H 4 ⋅ H 2 O in alkaline solution.