Abstract
A method for preparing a novel bixbyite non-selective coating for solar thermal conversion is described. The coating is formed by a thermal reaction between a titania sol-gel precursor with a copper manganese spinel to form a new material, Cu0.44Ti0.44Mn0.84Fe 0.28O3, with a bixbyite structure. The effect of temperature and ratio between the two components on the formation of the bixbyite layer (deposited on Inconel by spray-coating) was studied. The absorptance of the films (AM 1.5; 335-2500 nm) with a thickness of 10±2 μm after annealing at 2 h at 650 C and 750 C was 97.4% and 94.7%, respectively. This synthesis represents a novel approach in which the final solar thermal coating is formed as a continuous and uniform layer which combines both the absorber and the ceramic binder. The developed material shows promising results for future applications as absorber in solar thermal energy conversion.
| Original language | English |
|---|---|
| Pages (from-to) | 23-29 |
| Number of pages | 7 |
| Journal | Solar Energy Materials and Solar Cells |
| Volume | 120 |
| Issue number | PART A |
| DOIs | |
| State | Published - 2014 |
Bibliographical note
Funding Information:This work is supported by the Singapore National Research Foundation under CREATE program: Nanomaterials for Energy and Water Management and by the Israeli Ministry of Science and Technology under the Infrastructure Program.
Keywords
- Bixbyite
- Ceramic composites
- Sol-gel
- Solar thermal
- Spinel
- Thin films
