Highly Enhanced Thermal Robustness and Photothermal Conversion Efficiency of Solar-Selective Absorbers Enabled by High-Entropy Alloy Nitride MoTaTiCrN Nanofilms | |
Cheng-Yu He(何成玉)1,2; Xiang-Hu Gao(高祥虎)1,2; Dong-Mei Yu(于冬梅)2; Hui-Xia Guo(郭惠霞)3; Shuai-Sheng Zhao(赵帅生)2; Gang Liu(刘刚)1,2 | |
刊名 | ACS Applied Materials & Interfaces |
2021-03-31 | |
卷号 | 13期号:14页码:16987−16996 |
关键词 | solar selective absorber high-entropy alloy MoTaTiCrN thermal robustness photothermal conversion efficiency |
DOI | 10.1021/acsami.0c23011 |
英文摘要 | Recent advances in high-entropy alloys have spurred many breakthroughs in the fields of high-temperature materials and optical materials and they provide incredible application potentialities for photothermal conversion systems. Solar-selective absorbers (SSAs), as key components, play a vital role in photothermal conversion efficiency and service life. The most pressing problem with SSAs is their inconsistent optical performance, an instability constraint induced by thermal stress. A feasible method of improving performance stability is the introduction of high-entropy materials, such as high-entropy alloy nitrides. In this study, enabled by an intrinsic MoTaTiCrN absorption layer, the solar configuration achieves greatly enhanced, exceptional thermotolerance and optical properties, leading to the formation of a scalable, highly efficient, and cost-effective structure. Computational and experimental approaches are employed to achieve optimum preparation parameters for thicknesses and constituents. The crystal structure of high-entropy ceramic MoTaTiCrN is fully investigated, including thickness-dependent crystal nucleation. High-temperature and long-term thermal stability tests demonstrate that our proposed SSA is mechanically robust and chemically stable. Moreover, a low thermal emittance (15.86%) at 500 °C promotes the photothermal conversion efficiency. In addition, due to the exceptional spectral selectivity (α/ε = 92.3/6.5%), thermal robustness (550 °C for 168 h), and photothermal conversion efficiency (86.9% at 550 °C under 100 sun), it is possible for our proposed SSA to enhance the practical realization of large-area photothermal conversion applications, especially for concentrated solar power systems. |
语种 | 英语 |
WOS记录号 | WOS:000641156600101 |
内容类型 | 期刊论文 |
源URL | [http://ir.licp.cn/handle/362003/27720] |
专题 | 兰州化学物理研究所_环境材料与生态化学研究发展中心 |
通讯作者 | Xiang-Hu Gao(高祥虎); Gang Liu(刘刚) |
作者单位 | 1.Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China 2.Research and Development Center for Eco Chemistry and Eco-Materials, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China 3.Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou 730070, China |
推荐引用方式 GB/T 7714 | Cheng-Yu He,Xiang-Hu Gao,Dong-Mei Yu,et al. Highly Enhanced Thermal Robustness and Photothermal Conversion Efficiency of Solar-Selective Absorbers Enabled by High-Entropy Alloy Nitride MoTaTiCrN Nanofilms[J]. ACS Applied Materials & Interfaces,2021,13(14):16987−16996. |
APA | Cheng-Yu He,Xiang-Hu Gao,Dong-Mei Yu,Hui-Xia Guo,Shuai-Sheng Zhao,&Gang Liu.(2021).Highly Enhanced Thermal Robustness and Photothermal Conversion Efficiency of Solar-Selective Absorbers Enabled by High-Entropy Alloy Nitride MoTaTiCrN Nanofilms.ACS Applied Materials & Interfaces,13(14),16987−16996. |
MLA | Cheng-Yu He,et al."Highly Enhanced Thermal Robustness and Photothermal Conversion Efficiency of Solar-Selective Absorbers Enabled by High-Entropy Alloy Nitride MoTaTiCrN Nanofilms".ACS Applied Materials & Interfaces 13.14(2021):16987−16996. |
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