Hydrogen storage performance of HPSB hydrogen storage materials

Abstract

This work studied a hydrogen storage material which could absorbed hydrogen under room temperature and 3 MPa hydrogen pressure. This material was obtained by hydrolysis of NaBH4 (HPSB) and the hydrogen absorption and desorption performance was tested by PCT apparatus. The results showed that mixed-catalysts affected significantly the hydrogen storage capacity of the HBSP. When ratio of the catalysts Pr6O11 and CoCl2 was 7:3, the maximum hydrogen released amount of the HPSB(Pr6O11) hydrogen storage system reached 1.35 wt%.In order to improve the hydrogen absorption and desorption performance, TiO2 as catalyst were added to the HPSB(Pr6O11) hydrogen storage system. The results show when the catalysts Pr6O11 to CoCl2 doped ratio was 7:3 and the amount of TiO2 accounts for 9 wt% of the hydrogen storage system, the maximum hydrogen released of the HPSB(Pr6O11)-TiO2 hydrogen storage system reached 1.78 wt%. TiO2 obviously improve the hydrogen storage performance of HPSB hydrogen storage system.