Preparation method of LiNH2-LiH hydrogen storage material with improved hydrogen storage performance

• Main Authors: WANG LONGZHENG, DONG BAOXIA, TENG YUNLEI
• Format: Patent
• Language: Chinese; English
• Published: 23.11.2016
• Subjects: CHEMISTRY; COMPOUNDS THEREOF; INORGANIC CHEMISTRY; METALLURGY; NON-METALLIC ELEMENTS

The invention discloses a preparation method of a LiNH2-LiH hydrogen storage material with improved hydrogen storage performance and belongs to the technical field of solid-state chemical hydrogen storage. A mixing body of RbF-doped LiNH2 and LiH is subjected to ball milling treatment in the atmosphere of hydrogen to obtain the LiNH2-LiH hydrogen storage material. According to the method for greatly improving the hydrogen desorption performance of a LiNH2-LiH system by using added RbF as a catalyst, disclosed by the invention, lower dehydriding peak temperature and dehydriding initial temperature are obtained, the dehydriding temperature of the hydrogen storage material is brought forward, and the dehydriding speed is quickened. 种改善储氢性能的LiNH-LiH储氢材料的制备方法，属于固态化学储氢技术领域，将掺杂RbF的LiNH与LiH的混合体在氢气氛围下进行球磨处理，取得LiNH-LiH储氢材料。本发明添加的RbF作为催化剂大大改善LiNH-LiH体系的氢气脱附性能的方法，得到了较低的放氢峰值温度与放氢起始温度，使储氢材料放氢温度提前，加快放氢速率。