Highly Enhanced Thermal Robustness and Photothermal Conversion Efficiency of Solar-Selective Absorbers Enabled by High-Entropy Alloy Nitride MoTaTiCrN Nanofilms | |
Department | 环境材料与生态化学研究发展中心 |
Cheng-Yu He(何成玉)1,2; Xiang-Hu Gao(高祥虎)1,2; Dong-Mei Yu(于冬梅)1; Hui-Xia Guo(郭惠霞)3; Shuai-Sheng Zhao(赵帅生)1; Gang Liu(刘刚)1,2 | |
The second department | 材料与分离分析 |
2021-03-31 | |
Source Publication | ACS Applied Materials & Interfaces |
Volume | 13Issue:14Pages:16987−16996 |
Abstract | 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. |
Keyword | solar selective absorber high-entropy alloy MoTaTiCrN thermal robustness photothermal conversion efficiency |
MOST Discipline Catalogue | 工学 |
DOI | 10.1021/acsami.0c23011 |
Indexed By | SCI |
If | 9.229 |
Language | 英语 |
compositor | 第一作者单位 |
Citation statistics | |
Document Type | 期刊论文 |
Identifier | http://ir.licp.cn/handle/362003/27720 |
Collection | 环境材料与生态化学研究发展中心 |
Corresponding Author | Xiang-Hu Gao(高祥虎); Gang Liu(刘刚) |
Affiliation | 1.Research and Development Center for EcoChemistry and Eco-Materials, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China 2.Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China 3.Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou 730070, China |
Recommended Citation 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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