Self-standing cobalt oxide nanosheet array: An monolithic catalyst for effective hydrolysis of NaBH4 in alkaline media

In this work, we demonstrate the first use of cobalt oxide nanosheet array on carbon cloth (CoO/CC) as an efficient catalyst for the dehydrogenation of NaBH 4 . This catalyst shows a low activation energy of 35.40 kJ/mol for NaBH 4 hydrolysis and the hydrogen generation rate at 30 °C can reach up to 5955.29 mL/min/g CoO . Moreover, the catalyst exhibits high recyclability and durability. It suggests that the hydrolysis kinetics depends on many parameters, including temperature, NaBH 4 concentration, NaOH concentration and mass of catalyst.