Performance evaluation of hydrogen generation system with electroless-deposited Go-P/Ni foam catalyst for NaBH_4 hydrolysis

摘要

In this work, the performance of a hydrogen generation system with an electroless-deposited Co-P/Ni foam catalyst for NaBH_4 hydrolysis was evaluated. The performance of a hydrogen generator using a combination of CO/γ-Al_2O_3 and Co-P/Ni foam catalysts was also evaluated in order to address the shortcomings with the individual catalysts. The generator had high conversion efficiency, fast response characteristics, and strong catalyst durability. Hydrogen generation tests were performed to investigate the effect of the composition of the NaBH_4 solution on the hydrogen generation properties. The generator's conversion efficiency decreased with an increase in the amount of solute dissolved in NaBH_4 solution because of the accumulation of precipitates on the catalyst, and NaOH concentration had a greater effect on the hydrogen generation properties than did NaBH_4 concentration. According to these results, the hydrogen generation system with the Co-P/ Ni foam catalyst is suitable as a hydrogen supplier for proton exchange membrane fuel cells owing to the strong durability and inexpensive cost of the catalyst.