2013 Fiscal Year Final Research Report
Synthesis of V based hydrogen storage materials using ferroalloys and investigation of behavior of hydrogen in the hydrides
| Project/Area Number |
23760677
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Structural/Functional materials
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| Research Institution | National Institute of Advanced Industrial Science and Technology |
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Principal Investigator |
ASANO Kohta 独立行政法人産業技術総合研究所, エネルギー技術研究部門, 主任研究員 (30415640)
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| Project Period (FY) |
2011 – 2013
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| Keywords | 水素吸蔵材料 / 結晶構造 / 拡散 / 相変態 |
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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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