Progress in High-Capacity Hydrogen Storage Materials

Safe,efficient and economical hydrogen storage is the key technique for the large-scale application of hydrogen energy.With respect to high-pressure and liquefaction hydrogen storage,solid-state hydrogen storage,which can store hydrogen in materials by forming solid solution and/or hydrides,is regarded as the most promising technique because of its good safety and high energy density.To achieve the hydrogen storage capacity of above 5.0 wt% for on-board applications,the high-capacity hydrogen storage materials including metal aluminum hydrides,borohydrides,metal-N-H systems and amidoboranes were studied and developed.This brief review deals with the recent developments of high-capacity hydrogen storage materials.The emphases are focused on the hydrogen storage capacity,thermodynamics,kinetics,mechanisms and the effects of composition modification,catalyst doping and particle size on the hydrogen storage properties.