【摘 要】
：
Two composites LaNi4.8Sn0.2/CNTs and NdNi4.8Sn0.2/CNTs were prepared by an impregnation-reduction method.Their hydrogen storage capacity could reach up to 2.96
【机 构】
：
College of Chemistry
【基金项目】
：
国家自然科学基金;广东省科研项目
论文部分内容阅读
Two composites LaNi4.8Sn0.2/CNTs and NdNi4.8Sn0.2/CNTs were prepared by an impregnation-reduction method.Their hydrogen storage capacity could reach up to 2.96 wt% and 2.88 wt% respectively at room temperature and 1.0 MPa pressure.These values,which might result from the synergetic effect between the alloy nanoparticles and the pretreated CNTs,were three times higher than those of the unsupported MNi4.8Sn0.2(M=La,Nd)alloys under the same conditions.XRD and TEM revealed that the alloy particles were uniformly dispersed on the CNTs and the average particle size was ca.30 nm.The composites also showed good stability and the hydrogen storage capacity decreased by less than 6% after 100 adsorption-desorption cycles.Moreover,no noticeable change in crystalline structure was bserved for the composites.
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