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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 >Influence of the addition of vanadium on the hydrogenation properties of the compounds TiFe_(0.9)V_x and TiFe_(0.8)Mn_(0.1)V_x (x = 0,0.05 and 0.1)
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Influence of the addition of vanadium on the hydrogenation properties of the compounds TiFe_(0.9)V_x and TiFe_(0.8)Mn_(0.1)V_x (x = 0,0.05 and 0.1)

机译：钒的添加对化合物TiFe_（0.9）V_x和TiFe_（0.8）Mn_（0.1）V_x（x = 0,0.05和0.1）的氢化性能的影响

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摘要

TiFe_(0.9)V_x and TiFe_(0.8)Mn_(0.1)V_x hydrides have suitable equilibrium pressures at ambient conditions and are potential candidates for hydrogen storage applications. In this work, we study the influence of the addition of small amounts of vanadium on the hydrogenation properties of TiFe_(0.9)V_x and TiFe_(0.8)Mn_(0.1)V_x (x = 0, 0.05 and 0.1) alloys. The excess of Ti from TiFe in these materials results in the precipitation of Ti and Ti2Fe-type phases. In the analysis of the chemical composition, vanadium was observed in small amount in all phases for each sample which contains vanadium. Vanadium tends to substitute Fe sites, which results in a decrease of the plateau pressures. The addition of vanadium as TiFe_(0.8)Mn_(0.1)V_x (x = 0.05 and 0.1) alloys has beneficial effects on the equilibrium plateaus of the hydrides: the plateaus become natter and a significant reduction in the pressure hysteresis is observed.
机译：TiFe_（0.9）V_x和TiFe_（0.8）Mn_（0.1）V_x氢化物在环境条件下具有合适的平衡压力，是储氢应用的潜在候选者。在这项工作中，我们研究了添加少量钒对TiFe_（0.9）V_x和TiFe_（0.8）Mn_（0.1）V_x（x = 0、0.05和0.1）合金的氢化性能的影响。这些材料中，TiFe中Ti过量，会导致Ti和Ti2Fe型相的析出。在化学组成的分析中，对于每个含有钒的样品，在所有相中都观察到少量的钒。钒趋向于替代铁位点，导致平台压力降低。钒作为TiFe_（0.8）Mn_（0.1）V_x（x = 0.05和0.1）合金的添加对氢化物的平衡平稳期具有有益的影响：平稳期逐渐降低，并且观察到压力滞后现象显着降低。

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