Hydrogen desorption properties of Li-BN-H system synthesized by mechanical milling

被引：16

作者：

Wu, Chengzhang ^{[1
]}

Miyaoka, Hiroki ^{[2
]}

Ichikawa, Takayuki ^{[1
]}

Kojima, Yoshitsugu ^{[1
]}

机构：

[1] Hiroshima Univ, Inst Adv Mat Res, Higashihiroshima 7398530, Japan

[2] Hiroshima Univ, Grad Sch Adv Sci Matter, Higashihiroshima 7398530, Japan

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2008年 / 33卷 / 12期

关键词：

hydrogen storage; boron nitride; ammonia; ball milling;

D O I：

10.1016/j.ijhydene.2008.01.022

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

BN-NHx samples were synthesized by ball milling hexagonal boron nitride (h-BN) under hydrogen and/or ammonia atmosphere firstly. Then, the BN-NHx samples were ball milled with lithium hydride under hydrogen atmosphere to synthesize Li-BN-H composites. XRD, FT-IR and TG-MS were used to investigate the microstructure and gas desorption properties of samples. Experimental results show that hydrogen and ammonia can be chemically absorbed in h-BN by mechanical milling method. It is found that nanostructure, which formed by ball milling h-BN under hydrogen, is of great advantage to ammonia absorption. For the Li-BN-H composite, hydrogen starts to be released around 100 degrees C and the peak temperature is around 200 degrees C, 5.0 wt% hydrogen was desorbed during heating up to 500 degrees C without ammonia emission. (c) 2008 International Association for Hydrogen Energy. Published by Elsevier Ltd. All rights reserved.

引用

页码：3128 / 3131

页数：4

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