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贮氢材料在冷却和加压时具有吸氢且伴有放热功能,相反在加热和减压时,它具有释氢和吸热功能.最令人感兴趣的贮氢材料为LaNi_5,但当前这种材料的最大缺点是在其工作期间,一旦杂质进入材料晶格后,它的性能急骤下降.日本氢能研究实验室开发了一种新工艺,即把该合金细粉浸没在含F~-溶液里进行表面处理,结果在颗粒表面生成大量微型凹坑.这类微型凹坑的氟化镧薄层的表面积整整扩大了20倍,起着过滤器
Hydrogen storage materials have hydrogen absorption and exothermic function on cooling and pressurization, and on the contrary, they have hydrogen releasing and endothermic functions on heating and depressurization.The most interesting hydrogen storage material is LaNi_5, but at present The biggest drawback of this material is that its properties drop abruptly once it enters the lattice of the material during its working period.HK has developed a new process in which the fine powder of the alloy is immersed in a solution containing F ~ - solution surface treatment, resulting in a large number of micro-particles on the surface of the pit. Such micro-pits of lanthanum fluoride lamellae surface area of a complete expansion of 20 times, played a filter