Journal article
Black oxide nanoparticles as durable solar absorbing material for high-temperature concentrating solar power system
Solar energy materials and solar cells, v 134(C), pp 417-424
01 Mar 2015
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Concentrating solar power is becoming an increasingly important part of the renewable energy portfolio. However, further cost reduction is desired to make CSP competitive with traditional energy technologies. Higher operating temperature is considered an attractive avenue leading to higher power conversion efficiency and lower cost, but tremendous technical challenges exist with higher temperature operation of CSP, with one of the main issues being the lack of a high-performance solar absorbing material that is durable at 750 degrees C or above. In this work, a black oxide material, made of cobalt oxide nanoparticles, is synthesized and utilized as a high-temperature solar absorbing material. The nanoparticles are embedded in a dielectric matrix through a scalable spray coating process. The top layer of the coating is further improved with light-trapping structures using sacrificial fillers introduced from the same coating process. After the surface modification of cobalt oxide coating, we achieved a high thermal efficiency of 88.2%. More importantly, the coating shows no degradation after 1000-h annealing at 750 degrees C in air, while the existing commercial light absorbing coating was reported to degrade by long-term exposure at high temperature. Our findings suggest that the materials and processes developed here are promising for solar absorbing coating for future high-temperature CSP systems. (C) 2014 Elsevier B.V. All rights reserved.
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Details
- Title
- Black oxide nanoparticles as durable solar absorbing material for high-temperature concentrating solar power system
- Creators
- Jaeyun Moon - University of California San DiegoTae Kyoung Kim - University of California San DiegoBryan VanSaders - University of California San DiegoChulmin Choi - University of California San DiegoZhaowei Liu - University of California San DiegoSungho Jin - Univ Calif San Diego, Dept Mech Engn, La Jolla, CA 92093 USARenkun Chen - University of California San Diego
- Publication Details
- Solar energy materials and solar cells, v 134(C), pp 417-424
- Publisher
- Elsevier
- Number of pages
- 8
- Grant note
- DE-EE0005802 / US Department of Energy, SunShot Program
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Physics
- Web of Science ID
- WOS:000349728100054
- Scopus ID
- 2-s2.0-84921767265
- Other Identifier
- 991021877363404721
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InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Web of Science research areas
- Energy & Fuels
- Materials Science, Multidisciplinary
- Physics, Applied