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 NaBH4. This catalyst shows a low activation energy of 35.40 kJ/mol for NaBH4 hydrolysis and the hydrogen generation rate at 30 degrees 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, NaBH4 concentration, NaOH concentration and mass of catalyst. (C) 2017 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.