| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a hydrogen storage material which can store a large amount of hydrogen therein even when being filled with hydrogen at a low pressure. <P>SOLUTION: This manufacturing method includes synthesizing AlH<SB>3</SB>, and ball-milling the synthesized AlH<SB>3</SB>in a condition of applying a force of 2 G to 20 G (where G represents gravity acceleration) to make an X-ray diffraction pattern of AlH<SB>3</SB>into a halo pattern. Thus formed AlH<SB>3</SB>is specifically nanostructural AlH<SB>3</SB>, for instance, in which grain boundary phases 32 exist between respective matrix phases 30 and 30, the side length t2 of the matrix phase 30 is 20 nm or less, and the width w2 of the grain boundary phase 32 is 10 nm or less; or is amorphous AlH<SB>3</SB>. The manufacturing method further includes making the ball-milled AlH<SB>3</SB>release hydrogen, and then making the product occlude hydrogen to convert the product into AlHx (where 0<x≤3). The manufacturing method may further include adding a dopant to the AlHx. The hydrogen storage container is made by accommodating thus obtained hydrogen storage material in a container. <P>COPYRIGHT: (C)2008,JPO&INPIT |
