Cobalt Carbonate Hydroxide Nanowire Array on Ti Mesh: An Efficient and Robust 3D Catalyst for On-Demand Hydrogen Generation from Alkaline NaBH4 Solution.

In this work, for the first time, a cobalt carbonate hydroxide (Co(CO₃)_0.5(OH)⋅0.11 H₂O) nanowire array on Ti mesh (CHNA/Ti) was applied to drive the dehydrogenation of alkaline NaBH₄ solution for on-demand hydrogen production. Compared with other nanostructured Co-based catalyst systems, CHNA/Ti can be activated more quickly and separated easily from fuel solutions. This self-supported cobalt salt nanowire array catalyst works as an efficient and robust 3D catalyst for the hydrolysis reaction of NaBH₄ with a hydrogen generation rate of 4000 mL min⁻¹ g_Co⁻¹ and a low apparent activation energy of 39.78 kJ mol⁻¹ and offers an attractive system for on-demand hydrogen generation. [ABSTRACT FROM AUTHOR]