使用Mg-In固溶液合金的化的热力学和动力学不稳定
Chengshang Zhou1, Zhigang Zak Fang, Jun Lu
1Department of Metallurgical Engineering, The University of Utah, 135 South 1460 East, Room 412, Salt Lake City, Utah 84112-0114, USA.
Journal of the American Chemical Society
|July 17, 2013
概括
科学家们通过制造-合金来使化 (MgH2) 不稳定以储存气. 这一突破降低了脱温度,提高了动力学,为实际应用铺平了道路.
科学领域:
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
- 储能 储能 储能 储能 储能 储能
背景情况:
- 化 (MgH2) 由于其高容量,是储存的有希望的材料.
- 热力学不稳定的MgH2对于实际的储能应用至关重要,但一直是一个长期存在的挑战.
- 现有的方法往往涉及复杂的合成或损害存储能力.
研究的目的:
- 通过固体溶液合金来研究化 (MgH2) 的热力学不稳定性.
- 评估与III组和IVB组元素,特别是合金对MgH2特性的影响.
- 评估改进MgH2系统中改善释放动力学的潜力.
主要方法:
- 形成 (Mg) 与 (In) 的固体溶液合金.
- 对Mg-In合金的平衡压的测量与纯MgH2相比2.
- 对于Mg-0.1In合金,在1bar压下 (T1bar) 确定温度.
- 使用金属间 (TiMn2) 催化剂评估脱动力学.
主要成果:
- 这种Mg-0.1In合金的平衡压力比纯MgH2.2高出70%.
- 对于Mg-0.1In合金的T1bar从278.9°C降至262.9°C,而对于纯MgH2.2则降至278.9°C.
- 对于催化Mg-0.1In合金化物,观察到脱动力速率的显著改善.
结论:
- 将MgH2与合金的固体溶液有效地使化物不稳定.
- Mg-0.1In合金表现出改善的热力学性能和增强的脱动力学,用于储存.
- 这项研究为使用改性化物材料的实际储解决方案提供了一条可行的途径.
相关概念视频
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