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快速凝固鈦釩系貯氫合金電化學性能研究
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TG139.7

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全國優(yōu)秀博士學位論文作者專項資金資助項目(2000052)


Study on Electrochemical Properties of Rapid Solidified TiV-Based Hydrogen Storage Alloy
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    摘要:

    研究了快速凝固處理對鈦釩系貯氫電極合金Ti0.8Zr0．2V2．4Mn0．48Cr0．72Ni0．9的相結構、特別是電化學性能的影響規(guī)律。XRD研究表明：合金主要由六方結構的C14 Laves相和體心立方結構的釩基固溶體相所組成，快速凝固減少了合金中C14 Laves相的含量。電化學性能分析表明：快速凝固降低了合金電極的最大放電容量，增加了電極的活化次數，提高了電極表面的反應阻抗，惡化了電極的動力學性能，但是卻大大改善了合金電極的循環(huán)穩(wěn)定性。

    Abstract:

    The phase structures and the electrochemical properties of the TiV-based hydrogen storage electrode alloy Ti0.8Zr0.2V2.4 Mn0.48Cr0.72Ni0.9 after rapid solidification have been studied. It is found by XRD analysis that the alloy mainly consists of C14 Laves phase with hexagonal structure and V-based solid solution phase with BCC structure. The rapid solidification leads to the decrease in content of the C14 Laves phase in the alloy. Electrochemical analyses show that the rapid solidification reduces the maximum discharge capacity, increases the activation cycles, elevates the surface reaction resistance and worsens the kinetic properties of the alloy electrode. However, the cyclic stability of the alloy electrode is improved greatly after rapid solidification.

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朱云峰 潘洪革 劉永鋒 李銳 金勤偉 王啟東.快速凝固鈦釩系貯氫合金電化學性能研究[J].稀有金屬材料與工程,2004,33(3):262~266.[Zhu Yunfeng, Pan Hongge, Liu Yongfeng, Li Rui, Jin Qinwei, Wang Qidong. Study on Electrochemical Properties of Rapid Solidified TiV-Based Hydrogen Storage Alloy[J]. Rare Metal Materials and Engineering,2004,33(3):262~266.]
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  • 最后修改日期:2002-08-13
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