| Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2013: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2012: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2011: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
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| Research Abstract |
V based alloys are one of the most promising hydrogen storage materials. However, low production cost is necessary for practical use. In this work, in order to substitute V by ferrovanadium, the effect of impurity elements in ferrovanadium on the hydrogenation and dehydrogenation properties has been studied. It has been elucidated that Fe and oxygen in V reduce the hydrogen storage capacity and suppress the diffusion of hydrogen in the V hydride phase. Ferrovanadium is commercially produced from V oxide using the thermite (Goldschmidt) reaction with Al. Therefore, reduction of the oxygen content in V by increasing the Al content and adjustment of the Fe content depending on the raw material cost have been suggested from the results.
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