Abstract
The improvement of the capacity and rate of hydrogen absorption/desorption at the same time had been focus hydrogen storage field. A new method was proposed to prepare a new type sintered body with a special layer structure due to the crystal structure of the sintered body distinguish with a powder and alloy. Therefore, the sintered body not only effectively overcame the inconvenience from the powder on storage aspect, but also avoided negative factors of small surface area. The sintered body had a foam structure whose surface area was large, which provided a strong chemical channel for the physical absorption and chemical diffusion by generating hydrogen absorption phase Mg2Ni and catalytic phase NiTi, so that great improved the property of hydrogen absorption/desorption. The capacity of hydrogen absorption/desorption reach to 3% within 3 min and the highest capacity reach to 5.26% within 16 min; hydrogen desorption process was completed within 30 min and the released capacity was about 2%.
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