Stabilization of lithium superionic conduction phase and enhancement of conductivity of LiBH4 by LiCl addition
Stabilization of lithium superionic conduction phase and enhancement of conductivity of LiBH4 by LiCl addition
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DOI：
10.1063/1.3088857
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发表时间：
2009-02-23
影响因子：
4
通讯作者：
Orimo, Shin-ichi
中科院分区：
文献类型：
--
作者：
Matsuo, Motoaki;Takamura, Hitoshi;Orimo, Shin-ichi
LiBH 4在390 K附近表现出锂超离子导电性并伴有结构转变。添加LiCl到LiBH 4中会显著影响转变和电导率：在370 K加热时观察到LiBH 4中从低温（LT）到高温（HT）相的转变，并且在350-330 K冷却时可以保留HT相。此外，LT相中的电导率比纯LiBH 4的电导率高出一个或两个数量级以上。这些性能可以归因于溶解的LiCl到LiBH 4，建议通过原位X射线衍射测量。
LiBH4 exhibits lithium superionic conduction accompanied by structural transition at around 390 K. Addition of LiCl to LiBH4 drastically affects both the transition and electrical conductivity: Transition from low-temperature (LT) to high-temperature (HT) phases in LiBH4 is observed at 370 K upon heating and the HT phase can be retained at 350-330 K upon cooling. Further, the conductivity in the LT phase is more than one or two orders of magnitude higher than that of pure LiBH4. These properties could be attributed to the dissolution of LiCl into LiBH4, suggested by in situ x-ray diffraction measurement.