Effects of doping FeCl3 on hydrogen storage properties of Li-N-H system

被引:0
作者
Weijin Zhang [1 ,2 ]
Han Wang [1 ,2 ]
Hujun Cao [3 ]
Teng He [1 ]
Jianping Guo [1 ]
Guotao Wu [1 ]
Ping Chen [1 ]
机构
[1] Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences
[2] University of Chinese Academy of Sciences
[3] Institute of Materials Research, Materials Technology, Helmholtz-Zentrum Geesthacht
基金
中国国家自然科学基金; 国家杰出青年科学基金;
关键词
Hydrogen storage; Iron trichloride; Lithium amide; Reaction kinetics; Solid solution; Lithium imide-chloride;
D O I
暂无
中图分类号
TB34 [功能材料];
学科分类号
080501 ;
摘要
The effects of doping FeCl;on the LiNH;-2LiH system were investigated systematically. FeCl;was prior to react with LiH during ball milling their mixtures. The metallic Fe, which is generated from metathesis reaction between FeCl;and LiH, plays an important role on improving the dehydrogenation kinetics of LiNH;-2LiH system. The results indicated that the dehydrogenation peak and ending temperatures of the doped 1 mol%FeCl;sample shifted to low temperatures, and the dehydrogenation active energy changed from 102.45 k J/mol to 87.52 k J/mol. While increasing the amount of FeCl;, an excess of LiCl, the by-product of metathesis reaction between FeCl;and Li H, can stabilize LiNH;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;NH is near the molar ratio of 1:1.
引用
收藏
页码:139 / 143
页数:5
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