Journal article
Copper-alloyed spinel black oxides and tandem-structured solar absorbing layers for high-temperature concentrating solar power systems
Solar energy, v 132(C), pp 257-266
01 Jul 2016
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
•Highly efficient solar absorbing material for high-temperature in-air operation.•Tandem CuFeMnO4 and CuCr2O4 layers with >90% optical to thermal efficiency.•Scalable material synthesis (hydrothermal) and coating (spray coating).•Stable operation at 750°C in air for over 500h and 100cycles.
Although renewable solar power plants are rapidly proliferating, high cost and the intermittent availability of solar power are still significant barriers for its penetration into the energy grid system. Concentrating solar power (CSP) offers an attractive alternative due to its integration with cost-effective thermal energy storage systems. To further reduce the cost of CSP, it is imperative to operate the plants at higher temperatures for enhanced efficiency. One of the key components for next-generation high-temperature CSP is the solar absorbing coating materials. In this work, we have developed tandem-structured solar absorbing layers with CuFeMnO4 and CuCr2O4 black oxide nanoparticles (NPs). These tandem structures exhibited a remarkably high solar-to-thermal conversion efficiency, or figure of merit (FOM), of 0.903, under the condition of 750°C operating temperature and a solar concentration ratio of 1000. More importantly, the coating showed unprecedented durability, as demonstrated from long-term isothermal annealing at 750°C in air as well as rapid thermal cycling between room temperature and 750°C. Our results suggest that the tandem black oxide coating is suitable to meet the stringent demand of next-generation high-temperature CSP systems. The coating materials synthesis, structures, optical as well as thermal properties will be discussed.
Metrics
Details
- Title
- Copper-alloyed spinel black oxides and tandem-structured solar absorbing layers for high-temperature concentrating solar power systems
- Creators
- Tae Kyoung Kim - University of California San DiegoBryan VanSaders - University of California San DiegoElizabeth Caldwell - University of California San DiegoSunmi Shin - University of California San DiegoZhaowei Liu - University of California San DiegoSungho Jin - Materials Science & Engineering, University of California at San Diego, CA 92093, USARenkun Chen - University of California San Diego
- Publication Details
- Solar energy, v 132(C), pp 257-266
- Publisher
- Elsevier
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Physics
- Web of Science ID
- WOS:000377311400023
- Scopus ID
- 2-s2.0-84961736661
- Other Identifier
- 991021879625104721
UN Sustainable Development Goals (SDGs)
This publication has contributed to the advancement of the following goals:
InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Energy & Fuels