微晶碳对镁粉快速纳米化、储氢体系温度的影响研究

Research on fast nanometer of magnesium and hydrogen storage temperature

将微晶碳和镁粉在H2气氛中反应球磨复合,球磨时间为3h,制备的镁碳复合材料的平均粒度在20~120nm,说明适量微晶碳的引入,在短时间内,可实现镁粉的纳米化。对其进行吸氢性能研究,70Mg30C材料的储氢密度,在8min内可达5.0%（wt）,微晶碳含量越高,储氢时间越短。储氢体系温度瞬间升高200℃,得益于微晶碳在球磨中的助磨作用和镁粉吸氢的催化作用。

Crystallite carbon compounded used Mg with reaction ball milling in hydrogen. The average size of crystal in the composite of magnesium and carbon was 20~120nm, ball milling time for 3h, in a short time can be realization of nano-magnesium.In 70Mg30 materials, the hydrogen can be stored at 8min, 2MPa hydrogen pressure, and hydrogen stor- age density was bigger 5.0%. The crystallite carbon content was higher, stored the hydrogen time to be shorter. Stored hydrogen system temperature instantaneous to elevate 200℃, crystallite carbon was heled in the in the ball milling and the catalytic effect of magnesium powder attracted hydrogen.