Hydrogen generation system using sodium borohydride for operation of a 400W-scale polymer electrolyte fuel cell stack

High volume hydrogen production from the hydrolysis of sodium borohydride using a cobalt catalyst supported on a honeycomb matrix

“…The reactor is part of the Millennium Cell and Horizon Fuel Cell technology applied to Hydropak generators with a nominal maximum power output of 50 W [45e49]. Kim et al have reported a system using a Co-based catalyst supported on nickel foam, which feeds H 2 to a 400 W PEM Fuel Cell (Proton Exchange Membrane Fuel Cell) [40]. In another example Arzac et al used a similar Co catalyst to develop a device which produces and feeds H 2 into a 60 W fuel cell stack [42].…”

Kinetic study of NaBH4 hydrolysis over carbon-supported ruthenium

“…Although the kinetics of BrØnsted acid catalyzed NaBH 4 hydrolysis was extensively studied in the 1960s and 1970s [16][17][18], very few investigations have so far been contributed to the kinetics of the metal catalysis. Due to the lack of accurate kinetics, empirical methods were resorted to for predicting hydrogen generation rate from the hydrolysis of NaBH 4 [7,19,20]. Until very recently, some reports have appeared on the kinetics of metal catalysis [21][22][23].…”

Fe–B catalyst fabricated by hybrid capacitive adsorption–chemical reduction method and its application for hydrogen production from NaBH4 solution

“…http://dx.doi.org/10.1016/j.cattod.2013.05.024 support. He found that the optimum H 2 generation was obtained at a Co/B molar ratio of 1.5/2.8, with a maximum activity at temperature of 250 • C. Kim et al [10] reported the operating conditions in a flow reactor for continuous generation of H 2 : optimum flow rate of NaBH 4 aqueous solution at 17.5 mL min −1 ; appropriate concentrations of NaBH 4 and NaOH in the feed solution at 20 and 1 wt%, respectively for the generation of H 2 . The system can produce more than 6 L min −1 of H 2 .…”

“…The reaction product (borax) obtained after removal of H 2 from NaBH 4 , is environmentally clean and can be recycled to generate the reactant [9]. H 2 gas can be generated by the hydrolysis of borohydride in the presence of specific catalyst at room temperature [3,10]:…”