易于循环的Ti-dopedLiAlH4用于高性能储存
Xiangfeng Liu1, G Sean McGrady, Henrietta W Langmi
1Department of Chemistry, University of New Brunswick, P.O. Box 4400, Fredericton, NB E3B 5A3, Canada.
Journal of the American Chemical Society
|March 20, 2009
概括
用添加化化 (LiAlH4) 是通过使用化和在乙烯中有效合成的. 这种新型材料从80°C开始释放气,其动力学优异.
科学领域:
- 材料科学 材料科学 材料科学
- 无机化学 无机化学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 开发高效的存材料对于推进清洁能源技术至关重要.
- 金属化物提供高储存密度,但通常需要高温或高压才能释放.
- 催化剂兴奋剂可以改善金属化物释放的动力学.
研究的目的:
- 开发一种温和高效的合成方法,用于化化 (LiAlH4) 的化.
- 描述合成的Ti-doped LiAlH4.4 的释放的特性.
- 为了评估Ti-doped LiAlH4作为储存材料的潜力.
主要方法:
- 化 (LiH) 和 (Al) 在乙烯 (Me2O) 中在气氛下发生反应.
- 在现场用 (Ti) 对LiAlH4进行化.
- 通过热重力测量分析 (TGA) 和差分扫描热度计 (DSC) 分析释温度和动力学.
主要成果:
- 在温和反应条件下实现的LiAlH4的定量形成.
- 干燥的Ti-dopedLiAlH4是在易溶剂和过量的气排气后获得的.
- 该材料的释放量从80°C开始,约有7%的容量和出色的动力学.
结论:
- 已经建立了一种简单且可扩展的合成Ti-doped LiAlH4 的方法.
- 在较低的温度下,Ti-doping显著提高了LiAlH4的释放动力学.
- 添加的LiAlH4显示出作为储存应用的先进材料的前景.
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