为实现系统储氢密度5.5wt.%的目标，材料的储氢密度需要达到11wt.%以上。由于具有高的储氢容量（19.6wt.%），氨硼烷（AB）成为最有可能满足应用需求的固体储氢材料之一。AB热解时可在170℃以内释放两个当量的氢气，储氢密度高达13.1wt.%。但 AB的热解温度高，额外加热装置将严重降低系统储氢密度。此外，其热解放氢还存在放氢动力学缓慢、NH3及B2H6等有害杂质气体释放等问题。针对以上问题，本课题提出水热解协同放氢的AB基轻质复合储氢材料开发研究，利用轻质金属水解热原位加热AB体系使其热解放氢，同时通过内部添加纳米催化剂和外部采用隔水透氢包覆膜的内外修饰结合法来改善AB的热解放氢性能，同步促进AB热解和抑制AB水解，抑制杂质气体产生，提高其放氢性能。该课题的研究成果将有助于推动AB的实用化进程，为高容量储氢体系的开发提供理论基础和技术指导。

In order to realize the system-based target for gravimetric hydrogen density of 5.5 wt.%, the material-based hydrogen densities should be over 11wt.% for a storage material. Ammonia borane (AB) becomes one of the most promising materials to meet the requirement due to its high hydrogen density (19.6 wt.%). Two equiv. hydrogen can be released by the pyrolysis of AB at the temperature below 170 ℃,equating to a hydrogen density of 13.1 wt.%. When the external heating equipment is used to provide the heat for the pyrolysis of AB, the system-base hydrogen density will be dramatically decreased. Furthermore, other disadvantages for the pyrolysis of AB still remain such as the slow kinetics, the harmful by-product gases of NH3 and B2H6. In order to overcome these problems, this work plans to investigate the composite composed of lightweight metal hydride and AB. By the heat from the hydrolysis of lightweight metal hydride to heat AB to start its pyrolysis. Meanwhile, the methods of doping nano-catalyst inside of AB and nano-encapasulating outside of AB are combined to improve the pyrolysis properties of AB. The combination of inside-out doping of AB can accelerate it pyrolysis and suppress its hydrolysis and the release of by-product gases. The research will helpful for the application developments of AB and the system with high hydrogen density.