Scalable all-ceramic nanofilms as highly efficient and thermally stable selective solar absorbers

被引：73

作者：

Li, Yang ^{[1
]}

Lin, Chongjia ^{[1
]}

Zhou, Dan ^{[2
]}

An, Yiming ^{[2
]}

Li, Dezhao ^{[3
]}

Chi, Cheng ^{[1
]}

Huang, He ^{[1
]}

Yang, Shihe ^{[2
]}

Tso, Chi Yan ^{[4
]}

Chao, Christopher Y. H. ^{[5
]}

Huang, Baoling ^{[1
]}

机构：

[1] Hong Kong Univ Sci & Technol, Dept Mech & Aerosp Engn, Kowloon, Hong Kong, Peoples R China

[2] Hong Kong Univ Sci & Technol, Dept Chem, Kowloon, Hong Kong, Peoples R China

[3] Zhejiang Univ Technol, Coll Sci, Hangzhou 310023, Zhejiang, Peoples R China

[4] City Univ Hong Kong, Sch Energy & Environm, Kowloon, Hong Kong, Peoples R China

[5] Univ Hong Kong, Dept Mech Engn, Pokfulam, Hong Kong, Peoples R China

来源：

NANO ENERGY | 2019年 / 64卷

关键词：

Concentrating solar power; Solar-thermal energy conversion; All-ceramic nanofilms; Thermal stability; Spectrally selective absorber; TITANIUM NITRIDE; DEPOSITION; STABILITY; DIFFUSION; COATINGS; FILMS; TIN;

D O I：

10.1016/j.nanoen.2019.103947

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The pressing demands for next-generation concentrating solar power drive the pursuit of high-efficiency, thermally stable, and scalable spectrally selective absorbers. Multilayer metal/ceramic nanofilms are promising candidates owing to their strong sunlight absorption provided by extremely simple configurations and facile fabrication. However, the commercial success of such absorbers is still hindered by their unsatisfactory spectral selectivity and high-temperature stability associated with metal/ceramic interfaces. Here we first propose an allceramic TiN/TiNO/ZrO2/SiO2 absorber with highly selective absorption, i.e., a high solar absorptance (92.2%) yet an ultralow thermal emittance (17.0% at 1000 K), producing an unprecedented solar-thermal conversion efficiency (82.6% under 100 suns). Remarkably, the absorber shows great thermal stability even after long-term (150 h) annealing at 1000 K, boosting the operating temperature of conventional multilayer absorbers by at least 227 K. The efficient and stable all-ceramic absorber can be readily produced in quantity via low-cost processes, rendering it attractive for high-temperature solar-thermal technologies.

引用

页数：9

共 48 条

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