Designing Novel High Capacity Multicomponent Hydrides for Near-Ambient Solid State Hydrogen Stores

如果要实现氢汽车和氢燃料电池驱动的便携式电子产品（如笔记本电脑和移动电话）等产品，就迫切需要一种紧凑的氢存储解决方案。如果没有一种紧凑的汽车用储氢材料，那么化石燃料在交通运输中的应用就不太可能有任何重大的替代。大多数高容量固态储氢材料的主要缺点是释放氢所需的高分解温度。多组分氢化物（例如，混合复合氢化物与二元氢化物）提供了唯一的解决方案，以保持高存储容量（bbb90wt .%），并调整系统的热力学，使1巴平衡温度<150oC。该项目将采用诸如掺杂不稳定、脱氢催化剂和纳米多孔容器等材料设计策略，设计并实验验证具有高存储容量的新型多组分氢化物系统，能够在低于150℃的温度下循环。该系统的交付将标志着固态储氢材料性能的一个重大变化，并将为一系列燃料电池应用提供一种可行的存储技术。

There is a desperate need for a compact hydrogen storage solution if products like hydrogen cars and hydrogen fuel cell powered portable electronics such as laptops and mobile phones are to be realised. Without a compact hydrogen storage material for vehicle applications, there is unlikely to be any significant displacement in the use of fossil fuels for transportation. A major drawback to most high capacity solid state hydrogen storage materials is the high decomposition temperature needed to release the hydrogen. Multicomponent hydrides (e.g. mixing a complex hydride with a binary hydride) offers the only solution to maintain high storage capacities (>9wt.%) and tailor the thermodynamics of the system to give 1 bar equilibrium temperature <150oC. This project will design novel multicomponent systems employing material design strategies like dopant destabilisation, dehydrogenation catalysts and nanoporous containment to design and experimentally validate novel multicomponent hydride systems with high storage capacities, able to be cycled at temperatures below 150oC. The delivery of such a system will mark a step change in the performance of solid state hydrogen storage materials and will deliver a viable storage technology for a range of fuel cell applications.