(1 mol NaBH4 creates 4 mol H2), which is significantly more effective than other known hydrogen storage materials. NaBH4 is low in weight and volume and generates hydrogen with excellent purity. The technique yields a high rate of hydrogen generation and a high adequate hydrogen storage capacity (10.8 wt.%), both of which are adjustable. Although the process is sluggish, a catalyst is needed to speed it up. Thus, many catalysts were suggested for the hydrolysis of NaBH4 to liberate hydrogen. Ru, Pt, and Pd, which are pricey precious metal catalysts, are used less frequently as a catalyst for NaBH4 hydrolysis, which produces hydrogen. As a result, less costly transition metals have been proposed to take their place .