Stabilized cobalt-based nanofilm catalyst prepared using an ionic liquid/water interfacial process for hydrogen...

Area of Science:

• Materials Science
• Catalysis
• Energy Storage

Background:

• Developing high-performance, low-cost catalysts is crucial for liquid hydrogen storage.
• Sodium borohydride (NaBH4) hydrolysis is a promising route for hydrogen generation.

Purpose of the Study:

• To prepare and characterize ultrathin carbon-stabilized Co-doped CoOx nanofilms (C-Co/CoOx NFs) for NaBH4 hydrolysis.
• To evaluate the catalytic activity and durability of the developed nanofilms for hydrogen generation.

Main Methods:

• Utilized an ionic liquid/water interface strategy to synthesize C-Co/CoOx NFs.
• Investigated the hydrogen generation rate and catalyst recyclability through NaBH4 hydrolysis experiments.

Main Results:

• Achieved a high hydrogen generation rate of 8055 mL·min⁻¹·gCo⁻¹ (5106 mL·min⁻¹·gCat⁻¹).
• Demonstrated excellent catalyst durability, with recyclability over 20 cycles.
• The 2D nanofilm structure and carbon stabilization enhanced catalytic performance.

Conclusions:

• The C-Co/CoOx NFs exhibit superior activity and durability for hydrogen generation from NaBH4 hydrolysis.
• The study provides insights into designing advanced 2D nanofilm catalysts for efficient hydrogen production.