科研之友
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摘要
The structure and hydrolysis reaction of ball-milled MgH2-Ca and MgH2-CaH2 mixtures was investigated in function of milling time and component proportion. The nanocomposites formed by milling show faster hydrolysis reaction as well as higher hydrogen yield compared to conventional polycrystalline materials. This improvement is due to the formation of calcium hydride upon milling and to the fine mixture that results from extensive milling. When the milling is performed on MgH2-20.3 mol% CaH2 mixtures, the reaction yield reaches 80% after 30 min of hydrolysis.
- 出版日期2004-8-11
