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LaNixMn0.26Aly合金的吸放氫性能研究
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國家“973”項目(2010CB631305)；國家自然科學基金(50776094)


Hydrogen Absorption/Desorption Properties of LaNixMn0.26Aly Alloys
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    摘要:

    對LaNixMn0.26Aly合金的儲氫性能進行了研究。結(jié)果表明，與LaNi4.61Mn0.26Al0.13合金相比，LaNi4.5Mn0.26Al0.13合金的晶格常數(shù)和晶胞體積均變大，吸氫平臺壓力略有降低，放氫平臺壓力基本不變，滯后因子有所改善，儲氫容量略有減少，氫化物生成焓絕對值變大，氫化物穩(wěn)定性增加；對于LaNi4.4Mn0.26Al0.34合金，Al替代部分Ni使合金的晶格常數(shù)和晶胞體積變大，吸放氫平臺壓力明顯降低，滯后因子明顯改善，吸氫動力學性能顯著提高，氫化物生成焓絕對值變大，氫化物更加穩(wěn)定，但儲氫容量有所減少

    Abstract:

    The hydrogen storage properties of LaNixMn0.26Aly alloys were investigated. Results show that when y=0.13, the lattice parameters (a and c) and the lattice volume V are increased, the absorption plateau pressure is slightly decreased, the desorption plateau pressure is almost the same and the hysteresis factor is improved, while the hydrogen intake capacity is impaired, and the stability of metal hydride is enhanced with decrease of the x. As for LaNi4.4Mn0.26Al0.34 alloy, the lattice parameters and cell volumes are increased, the absorption/desorption plateau pressure is obviously decreased, the hysteresis factor and the absorption kinetics are greatly improved, while the hydrogen content is obviously impaired with Al substituting for partial Ni

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李慎蘭,陳 偉,羅 剛,韓興博,陳德敏,楊 柯,陳維平. LaNixMn0.26Aly合金的吸放氫性能研究[J].稀有金屬材料與工程,2013,42(5):962~966.[Li Shenlan, Chen Wei, Luo Gang, Han Xingbo, Chen Demin, Yang Ke, Chen Weiping. Hydrogen Absorption/Desorption Properties of LaNixMn0.26Aly Alloys[J]. Rare Metal Materials and Engineering,2013,42(5):962~966.]
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  • 收稿日期:2012-04-01
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