title: Enhanced hydrogen storage properties of the 2LiBH4-MgH2 composite with BaTiO3 as an additive.
abstract: The 2LiBH4-MgH2 + 20 wt% BaTiO3 composite was prepared by ball-milling LiBH4, MgH2 and BaTiO3, and the effect of BaTiO3 on the hydrogen storage properties of the composite was investigated. TG-DSC results show that the onset dehydrogenation temperature of the composite is 299 °C, which is 124 °C lower than that of 2LiBH4-MgH2, and the dehydrogenation amount of the composite increases from 6.86 wt% to 7.48 wt% at 500 °C. Kinetic tests show that the dehydrogenation amount of 2LiBH4-MgH2 + 20 wt% BaTiO3 reaches 1.5 wt% within 400 seconds, almost 10 times that of 2LiBH4-MgH2. BaTiO3 reacts with LiBH4 during the dehydrogenation of the composite and generates BaB6 and TiO2. BaB6 is beneficial to lower the stability of LiBH4, while TiO2 has a catalytic effect in improving the hydrogenation/dehydrogenation kinetics of the reaction between Mg and LiBH4.
authors.affiliation: State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, PR China. hanshm@ysu.edu.cn.
authors.forename: Jiasheng
authors.initials: J
authors.lastname: Wang
authors.affiliation: State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, PR China. hanshm@ysu.edu.cn and College of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004, PR China.
authors.forename: Shumin
authors.initials: S
authors.lastname: Han
authors.affiliation: College of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004, PR China.
authors.forename: Zhibin
authors.initials: Z
authors.lastname: Wang
authors.affiliation: College of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004, PR China.
authors.forename: Dandan
authors.initials: D
authors.lastname: Ke
authors.affiliation: College of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004, PR China.
authors.forename: Jingjing
authors.initials: J
authors.lastname: Liu
authors.affiliation: State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, PR China. hanshm@ysu.edu.cn.
authors.forename: Mingzhen
authors.initials: M
authors.lastname: Ma