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

来源：

Progress in Natural Science:Materials International | 2017年 / 27卷 / 01期

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

页码：139 / 143

页数：5

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