氢气是重要的化工原料、清洁的燃料与理想的能源载体。金属氧化物化学循环分解水制氢是一种建立在金属基储-放氧材料与化学循环基础上的新兴制氢方式。本项目针对现有化学循环分解水过程中材料氧传输与制氢能力的"瓶颈"问题，提出通过研究储氧材料可控合成与可逆氧形成机理，实现高效分解水制氢的思路。该技术可降低制氢成本，延长材料服役寿命。项目针对化学循环分解水制氢技术,围绕储氧材料的 "可控合成"与"可逆氧形成"开展研究，重点解决材料活性位培育及其控制、微环境与微结构、结构演变与界面效应、可逆氧再生以及分解水反应动力学特性对于制氢过程的作用机制等关键科学问题，获得提高分解水制氢活性与强化储氧材料氧利用效果的新途径，形成基于高效化学循环分解水制氢储氧材料的基础理论。高效化学循环分解水制氢用储氧材料的可控合成与应用，对于包括化学链蒸汽重整、热化学循环分解水制氢和化学储氢-制氢等方面有着很强借鉴意义。

Hydrogen is an important chemical feedstock as well as clean fuel and ideal energy carrier. Hydrogen production by the water-splitting chemical cycle based on metal oxides and its oxygen storage-release capacity is an emerging technology. To solve the problem of low water-splitting efficiency and poor oxygen transport capacity involved in this technology, this project proposes a new way to overcome those problems via controlled synthesis and reversible oxygen formation study of oxygen storage matrtials (OSM). The proposed technology will reduce the hydrogen production cost and prolong the service life. The project will study on controlled synthesis and reversible oxygen formation of OSM for the hydrogen production via water-splitting. The emphasis of the project is to obtain the influencing mechanism of active sites cultivation and controlling in OSM, micro-circumstance and micro-structure of OSM, structrue evolution and interface effect, kinetics characteristic of water-splitting reaction, and reversible oxygen regeneration on the hydrogen production process. Based on those study, some new approaches will developed for the improvement of hydrogen production and intensification of oxygen utilization, and the basic theory of this technology and OSM will also established. Controlled synthesis of OSM and its application in hydrogen production via water-splitting has an important meaning to the similar technologies such as chemical-looping steam reforming, hydrogen production via two-step thermochemical water-splitting cycles, chemical hydrogen storage and production, and other hydrogen production technology.