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Effects of doping FeCl_3 on hydrogen storage properties of Li-N-H system

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Zhang Weijin 1   Wang Han 1   Cao Hujun 2   He Teng 1   Guo Jianping 1   Wu Guotao 1 *   Chen Ping 1  
文摘 The effects of doping FeCl_3 on the LiNH_2–2LiH system were investigated systematically. FeCl_3 was prior to react with LiH during ball milling their mixtures. The metallic Fe, which is generated from metathesis reaction between FeCl_3 and LiH, plays an important role on improving the dehydrogenation kinetics of LiNH_2–2LiH system. The results indicated that the dehydrogenation peak and ending temperatures of the doped 1 mol% FeCl_3 sample shifted to low temperatures, and the dehydrogenation active energy changed from 102.45 kJ/mol to 87.52 kJ/mol. While increasing the amount of FeCl_3, an excess of LiCl, the by-product of metathesis reaction between FeCl_3 and LiH, can stabilize LiNH_2 and thus hinder hydrogen desorption. The dehydrogenation product is a new solid cubic phase solution of lithium imide-chloride. The high limit of the solid solution of LiCl and Li_2NH is near the molar ratio of 1:1.
来源 Progress in Natural Science: Materials International ,2017,27(1):139-143 【核心库】
DOI 10.1016/j.pnsc.2016.12.017
关键词 Hydrogen storage ; Iron trichloride ; Lithium amide ; Reaction kinetics ; Solid solution ; Lithium imide-chloride
地址

1. Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian National Laboratory for Clean Energy, Dalian, 116023  

2. Institute of Materials Research, Materials Technology, Helmholtz-Zentrum Geesthacht, Germany, Geesthacht, 21502

语种 英文
文献类型 研究性论文
ISSN 1002-0071
学科 一般工业技术
基金 support from the Project of National Natural Science Funds for Distinguished Young Scholar ;  Projects of National Natural Science Foundation of China ;  CAS-Helmholtz JRG Project
文献收藏号 CSCD:5952816

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