实验分析了LaCl3和La2O3对LiAlH4-NH4Cl体系放氢性能的影响.结果显示,掺杂La2O3缩短了试样的放氢起始时间,并且提高了试样的放氢速率.然而,掺杂LaCl3明显降低了试样的放氢速率.进一步的研究显示,随着LaCl3和La2O3加入量的增加,除了掺杂3 mol％ LaC13的试样,其它的试样在180 min内的放氢量显示出了一个逐步降低的趋势.此外,掺杂La2O3试样的最大放氢量明显高于掺杂LaCl3试样.除此以外,SEM分析结果显示,掺杂试样与未掺杂试样的微观结构都是相似的,没有显示出明显的不同.
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