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OALib Journal期刊
ISSN: 2333-9721
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非化学计量lani5型储氢合金的性能
Keywords: 储氢合金,混合稀土,pct曲线,放电容量
Abstract:
？采用富la混合稀土与ni、co、mg等元素组合，获得了一种非化学计量lani5型储氢合金.用金相、xrd和sem-edx等方法分析了该合金的组织结构，研究了合金的气相储氢特性以及电化学性能，结果表明：在1.6mpa氢压和温度29℃下，该合金的储氢量达到1.58%（质量分数）.该合金的放电容量为380mah/g，经300次循环后容量保持率为55%.该合金的基体是cacu5型结构的lani5相，但有第二相(lamg)ni3析出，这种第二相的形成是导致该合金大容量的关键.
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