Application of CoFe_(2)O_(4)-NiO nanoparticle-coated foam-structured material in a high-flux solar thermochemical reactor

作     者：ZHANG Hao ZHANG XiaoMi YANG DaZhi SHUAI Yong GUENE LOUGOU Bachirou PAN QingHui WANG FuQiang 

作者机构：School of Electrical Engineering and AutomationHarbin Institute of TechnologyHarbin 150001China School of Energy Science and EngineeringHarbin Institute of TechnologyHarbin 150001China School of New EnergyHarbin Institute of Technology at WeihaiWeihai 264209China 

出 版 物：《Science China(Technological Sciences)》 (中国科学(技术科学英文版))

年 卷 期：2023年第66卷第11期

页      面：3276-3286页

核心收录：

学科分类：080703[工学-动力机械及工程] 07[理学] 08[工学] 070205[理学-凝聚态物理] 0807[工学-动力工程及工程热物理] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：supported by the National Key Research and Development Program of China(Grant No.2018YFA0702300) the National Natural Science Foundation of China(Grant No.52106085) the Heilongjiang Postdoctoral Fund(Grant No.LBH-Z22120) 

主　　题：solar thermochemistry CO_(2)splitting two-step redox cycle iron-base oxygen carrier reactor design 

摘      要：The splitting of carbon dioxide through the two-step solar thermochemical cycle presents enormous potential,for it holds the dual functionalities of solar fuel production and carbon-based energy ***,the industrialization of this technology is impeded by two critical factors:The absence of fully developed oxygen carriers and advanced reaction devices that deliver exceptional *** order to identify a potentially effective oxygen carrier,50 wt%NiO-modified Co Fe_(2)O_(4)is selected as the active component and characterized by means of thermogravimetry,scanning electron microscopy,and energy dispersive spectroscopy,so as to clarify its oxygen exchange capacity,micromorphology and elemental composition in high-temperature thermochemical ***,nanoparticle-coated foam-structured materials are prepared in combination with Si C ceramic foam for experimental testing in a high-flux solar *** results indicate that a peak CO yield of 1.96 m L min^(-1)g^(-1)can be gained in a 1500–1250 K preliminary test,demonstrating the application potential of the *** contrast to conventional redox materials,the CO_(2)activity of the materials synthesized in this study exhibits an enhancement with rising oxidation *** means that isothermal cycles can potentially achieve higher conversion and fuel yield than non-isothermal cycles,while simultaneously reducing the amount of irreversible heat loss during high-temperature *** the estimated steadystate thermal efficiency of the solar reactor can reach up to 42%,further optimization of the reactor design is necessary to enhance energy conversion efficiency,as it is partially limited by the dimensions of the reaction chamber.