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首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >Destabilization of LiBH_4 by (Ce, La)(Cl, F)_3 for hydrogen storage
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Destabilization of LiBH_4 by (Ce, La)(Cl, F)_3 for hydrogen storage

机译：LiBH_4通过（Ce，La）（Cl，F）_3的去氢稳定作用

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摘要

The mixtures of LiBH_4 with halides of Ce or La in a molar ratio of 3:1 were investigated to explore their hydrogen storage properties. The ball milling of LiBH_4 with chloride of Ce or La yielded Ce( BH_4)_3 and La(BH_4)_3 , while fluoride of Ce or La did not react with LiBH_4 during extended ball milling at room temperature. The dehydrogenation temperatures of the ball-milled mixtures were reduced to 220-3 20 °C, which were much lower than that of pure LiBH_4. The diborane emission during hydrogen release was observed at a low level. The dehydrogenation temperature is found to be affected by the composition of rare earth halides, but less influenced by ball milling time. The endothermic dehydrogenation reactions produced lithium halides, hydrides and borides of the corresponding rare earth element. Moreover, the LiBH_4 +1 /3(Ce, La)(Cl, F)_3 showed partial reversibility through the formation of an unknown borohydride, allowing for a potential hydrogen storage system.
机译：研究了LiBH_4与Ce或La的卤化物的摩尔比为3：1的混合物，以探索其储氢性能。 LiBH_4与Ce或La的氯化物的球磨得到Ce（BH_4）_3和La（BH_4）_3，而Ce或La的氟化物在室温下长时间球磨期间不与LiBH_4反应。球磨混合物的脱氢温度降至220-3 20°C，远低于纯LiBH_4的脱氢温度。氢释放过程中乙硼烷的排放量很低。发现脱氢温度受稀土卤化物组成的影响，但受球磨时间的影响较小。吸热脱氢反应产生相应稀土元素的卤化锂，氢化物和硼化物。此外，LiBH_4 +1 / 3（Ce，La）（Cl，F）_3通过形成未知的硼氢化物表现出部分可逆性，从而有潜在的储氢系统。

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