摘要
钙循环技术(CaL)因其耐高温、高储热密度,与聚光太阳能(CSP)电站高度契合。然而,CaO循环稳定性差、吸光性能差,限制了系统的整体效率。本研究以钢渣为原料,通过醋酸浸渍并掺杂不同比例的锰来制备新型钙基材料。结果表明,掺杂5%锰的材料性能最佳。通过热重测试和30次循环储热实验,与CaO相比,吸附速率提高85%,储能密度提升73%。此外,其吸光率为CaO的9.5倍。光驱动模拟实验也进一步验证了其在系统中的应用潜力,展示了用于新一代CaL-CSP系统的广泛前景。
Calcium cycle technology(CaL)is highly compatible with concentrated solar power(CSP)plants due to its high temperature resistance and high heat storage density.However,the poor stability of CaO cycle and poor light absorption performance limit the overall efficiency of the system.In this study,steel slag was used as a raw material to prepare novel calcium-based materials by acetic acid impregnation and doping with different ratios of manganese.The results showed that the material doped with 5%manganese had the best performance.Through thermogravimetric tests and 30 cycles of thermal storage experiments,the adsorption rate is increased by 85%and the energy storage density is increased by 73%compared with CaO.In addition,its light absorption rate is 9.5 times that of CaO.The light-driven simulation experiments also further validate its potential for application in the system,demonstrating a wide range of prospects for use in next-generation CaL-CSP systems.
作者
李文杰
李晨光
雷少敏
郭欣
LI Wenjie;LI Chenguang;LEI Shaomin;GUO Xin(National Key Laboratory of Coal Combustion and Low-Carbon Utilization,Huazhong University of Science and Technology,Wuhan 430074,China;Institute of Plasma Physics,Hefei Institute of Materials Science,Chinese Academy of Sciences,Hefei 230026,China)
出处
《工程热物理学报》
北大核心
2025年第8期2453-2462,共10页
Journal of Engineering Thermophysics
基金
湖北省国际科技合作计划(No.2023EHA019)。
关键词
热化学储能(TCES)
钙环(CaL)
钢渣
锰掺杂
光驱动
thermochemical energy storage(TCES)
calcium looping(CaL)
steel slag
manganese doping
photo-driven
