Effect of Milling Time on Hydrogen Storage Properties of TiZr Hydride Doped NaAlH<sub>4</sub>

庄鹏辉; 刘晓鹏; 李志念; 王树茂; 蒋利军; 李华玲

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Effect of Milling Time on Hydrogen Storage Properties of TiZr Hydride Doped NaAlH₄

更新时间：2025-12-08

- Effect of Milling Time on Hydrogen Storage Properties of TiZr Hydride Doped NaAlH₄
- Vol. 42, Issue 5, Pages: 639-642(2008)
- 作者机构：
  
  北京有色金属研究总院能源材料与技术研究所,北京,100088
- 作者简介：
- 基金信息：
- DOI：
  CLC： TG139
- Online First：10 May 2008，
  
  Published：2008
- 稿件说明：
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庄鹏辉, 刘晓鹏, 李志念, et al. Effect of Milling Time on Hydrogen Storage Properties of TiZr Hydride Doped NaAlH₄[J]. 2008, 42(5): 639-642.
DOI：

庄鹏辉, 刘晓鹏, 李志念, et al. Effect of Milling Time on Hydrogen Storage Properties of TiZr Hydride Doped NaAlH₄[J]. 2008, 42(5): 639-642. DOI：

摘要

采用XRD、Sievert等容法储放氢性能测试、SEM等分析手段

研究了球磨工艺对TiZrH

1.7～1.9

氢化物掺杂NaAlH

材料的形态、物相及可逆储放氢性能的影响.研究结果表明:TiZrH

1.7～1.9

氢化物掺杂NaAlH

可以实现可逆吸放氢

其中球磨10 h的复合储氢材料在160 ℃、0.1 MPa放氢条件下

总放氢量(质量分数)达4.5%

40 min可逆放氢量超过3.0%

显示了良好的储放氢动力学性能; TiZrH

1.7～1.9

氢化物在复合储氢材料吸放氢前后保持物相和结构不变

对NaAlH

配位氢化物的可逆储放氢反应起到了催化改善作用.

Abstract

The hydrogen storage properties of TiZrH

1.7-1.9

doped NaAlH

prepared by ball-milling method were investigated by X-ray diffraction(XRD)

scanning electron microscopy(SEM)and Sievert's technology test. The results show that the TiZrH

1.7-1.9

doped NaAlH

has good reversible hydrogen storage capacity. The dehydrogenation capacity(mass fraction)of the sample milled for 10 h reaches to 3.0% in 40 minutes and 4.5% in 11 h at 160 ℃

0.1 MPa

indicating great improvement of the dehydrogenation kinetics of NaAlH

doped by TiZrH

1.7-1.9

. The phase structure of TiZrH

1.7-1.9

doped in NaAlH

keeps stable during the hydrogenation/dehydrogen

ation process of NaAlH

which indicates the catalytic effect of TiZrH

1.7-1.9

on improving reversible hydrogen storage property of NaAlH

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references

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BOGDANOVIC B, FELDERHOFF M, KASKEL S, et al. Improved hydrogen storage properties of Ti-doped sodium alanate using titanium nanoparticles as doping agents [J]. Adv Mater, 2003, 15(12): 1012-1015.

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WANG Ping, KANG Xiangdong, CHENG Huiming. Exploration of the nature of active Ti species in metallic Ti-doped NaAlH4 [J]. Phy Chem: B, 2005, 109(43): 20131-20136.

SRININASAN S S, BRINKS H W, HAUBACK B C, et al. Long term cycling behavior of titanium doped NaAlH4 prepared through solvent mediated milling of NaH and Al with titanium dopant precursors [J]. J Alloys Compd, 2004, 377: 283-289.

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Effect of Milling Time on Hydrogen Storage Properties of TiZr Hydride Doped NaAlH4

DOI：

摘要

Abstract

关键词

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Effect of Milling Time on Hydrogen Storage Properties of TiZr Hydride Doped NaAlH₄