基于水分解探索金属钯-氢体系中富氢相的形成及其物理机制

The research on hydrogen storage materials for hydrogen energy applications and the future to solve the energy shortage problem has important significance and value. As one kind of hydrogen storage materials, metal hydride has been great concern, because of its high hydrogen content, relative simple structure and composition, and being easy to study the mechanism of hydrogen storage. This project is to study the palladium hydride in detail on the formation and physical model of the hydrogen-rich compounds, and the mechanical of hydrogen storage by using high pressure methods. The project specifically includes: the reaction formation of the mixture of palladium and water induced by photodissociation as function of photon energy range, irradiation time and the flux at low pressure; conduct high pressure experiments on palladium hydrides to explore the high pressure hydrogen-rich phase and in-depth explanation of the physical mechanism; the high-pressure hydrogen-rich phase cryogenic relief experiments to understand its hydrogen desorption process, and find maintained conditions at ambient pressure. The project aims to study the high-pressure hydrogen-rich compounds in palladium hydrides and reveal the physical mechanism of its formation, provide the basis for high-pressure hydrogen storage, and lay the theoretical foundation for the potential application of metallic palladium hydrides.

储氢材料的研究对于氢能源的应用，以及未来解决能源紧缺问题有重要的意义和价值。因其其含氢量高，且结构和组分相对简单，储氢的条件和机理易于研究,金属氢化物一直备受关注。本项目以金属钯-氢体系为研究对象，利用高压手段对其富氢氢化物的形成、物理模型以及储氢机理进行系统详细地科学研究。具体内容包括：低压下光辐照导致金属钯-水混合物反应形成氢化物的能量范围、辐照时间、强度等条件；对金属钯氢化合物进行高压力范围的实验，形成高压富氢相，并利用X射线衍射实验方法等深入研究并解释其物理机制；对高压富氢相进行低温卸压实验，了解其放氢过程，并找到高压富氢相常压保持的条件和方法。本项目旨在利用高压手段研究金属钯-氢体系的高压富氢化合物，揭示其形成的物理机理，为高压储氢提供依据，并为金属钯氢化物的潜在应用奠定理论基础。