Hydrogen Storage Methods, Systems and Materials

With the world energy crisis constantly developing and petrol resources reducing, hydrogen is recovered as an ideal substitute for its excellent characteristics. Despite its abundance, abilities for easy regeneration and less pollution emissions, hydrogen energy has lower energy density in standard conditions, which means hydrogen storage needs lots of space.Among all techniques,hydrogen storage technology is the hottest topic.High efficient hydrogen storage technology is highly wanted for the application in energy storage system.This paper reviews the hydrogen storage technology from varied main principles of hydrogen storage process. It makes concise comparison and analysis mainly on physical hydrogen storage (high pressure,high pressure with low temperature and liquid storage) and absorption storage (physical absorption,chemical absorption). This paper does some research on the main technical features of these two hydrogen storage technologies to find the most economic method. And the comparison shows advantages and disadvantages on each method. Physical hydrogen has weaknesses on high hydrogen storage conditions and poor security, meanwhile, chemical hydrogen storage is weak in the process of dehydrogenation.