Ball Mill Effect on the Dehydrogenation Kinetics of LiAlH<sub>4</sub>

孙泰; 黄存可; 董汉武; 王辉; 朱敏

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Ball Mill Effect on the Dehydrogenation Kinetics of LiAlH₄

更新时间：2025-12-08

- Ball Mill Effect on the Dehydrogenation Kinetics of LiAlH₄
- Vol. 42, Issue 2, Pages: 256-260(2008)
- 作者机构：
  
  华南理工大学机械工程学院,广州,510640
- 作者简介：
- 基金信息：
- DOI：
  CLC： TG139.7
- Online First：10 February 2008，
  
  Published：2008
- 稿件说明：
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孙泰, 黄存可, 董汉武, et al. Ball Mill Effect on the Dehydrogenation Kinetics of LiAlH₄[J]. 2008, 42(2): 256-260.
DOI：

孙泰, 黄存可, 董汉武, et al. Ball Mill Effect on the Dehydrogenation Kinetics of LiAlH₄[J]. 2008, 42(2): 256-260. DOI：

摘要

采用高能球磨对配位氢化物LiAlH

进行纳米化

通过X射线衍射分析

压力、组分等温测试等手段

研究了球磨时间、球料比等球磨参量对LiAlH

的微观结构和等温放氢性能的影响

并在此基础上揭示了球磨对LiAlH

的储氢性能和机制的影响.实验结果表明:LiAlH

分解为Li

AlH

和Al的放氢阶段与材料的晶粒尺寸有着密切的关系

较小的晶粒尺寸能有效地改善样品的储氢动力学性能; 球磨能使Li

AlH

分解为LiH和Al的放氢阶段的起始温度显著降低; 在适当的球磨参数下

LiAlH

的放氢有可能按不同于目前普遍认同的放氢模式进行.

Abstract

The influence of ball milling parameters such as milling time

ball to powder ratio on the micro structure and dehydrogenation kinetics of complex hydride has been studied by X-ray diffraction and pressure-composition isotherms. Results show that the dehydrogenation kinetic of decomposition from LiAlH

to Li

AlH

and Al has a close relationship with the crystalline size of raw-material. Reducing crystalline size can remarkably improve the hydrogen storage properties of LiAlH

. Ball milling can significantly decrease the decomposition temperature of Li

AlH

. However

the decomposition of LiAlH

may proceed via a mode that differs from the traditiona

l view.

关键词

Keywords

references

United States Department of Energy. A national vision of America's transition to a hydrogen economy [M]. Washington DC:United States Department of Energy, 2001.

BALEMA V P, PECHARSKY V K, DENNIS K W. Solid state phase transformations in LiAlH4 during high-energy ball-milling [J]. Journal of Alloys and Compounds, 2000, 313(1/2): 69-74.

CHEN J, KURIYAMA N, XU Q, et al. Reversible hydrogen storage via titanium-catalyzed LiAlH4 and Li3AlH6 [J]. Journal of Physical Chemistry:B, 2001, 105(45): 11214-11220.

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ANDREASEN A, VEGGE T, PEDERSEN A S. Dehydrogenation kinetics of as-received and ball-milled LiAlH4 [J]. Journal of Solid State Chemistry, 2005, 178(12): 3672-3678.

ANDREI C M, WALMSLEY J, BLANCHARD D, et al. Electron microscopy studies of lithium aluminium hydrides [J]. Journal of Alloys and Compounds, 2005, 395(1/2): 307-312.

EASTON D S, SCHNEIBEL J H, SPEAKMAN S A. Factors affecting hydrogen release from lithium alanate(LiAlH4)[J]. Journal of Alloys and Compounds, 2005, 398(1/2):245-248.

RESAN M, HAMPTON M D, LOMNESS J K, et al. Effects of various catalysts on hydrogen release and uptake characteristics of LiAlH4 [J]. International Journal of Hydrogen Energy, 2005, 30(13/14): 1413-1416.

KOJIMA Y, KAWAI Y, HAGA T, et al. Direct formation of LiAlH4 by a mechanochemical reaction [J]. Journal of Alloys and Compounds, 2007, 441(1/2): 189-191.

TAKESHITA H T, KAMADA Y, TANGGUCHI A, et al. Relation between melting and dehydrogenation temperatures of LiAlH4 [J]. Materials Transactions, 2006, 47(2): 405-408.

ANDREASEN A. Effect of Ti-doping on the dehydrogenation kinetic parameters of lithium aluminum hydride [J]. Journal of Alloys and Compounds, 2005,419(1/2): 40-44.

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Ball Mill Effect on the Dehydrogenation Kinetics of LiAlH4

DOI：

摘要

Abstract

关键词

Keywords

references

Ball Mill Effect on the Dehydrogenation Kinetics of LiAlH₄