INO
CNR
vai_a_storia   vai_a_organizzazione   vai_a_sedi   vai_a_personale   Area Riservata
    English English Version  
 
 

Lanthanum hexaboride for solar energy applications

  Articoli su Riviste JCR/ISI  (anno 2017)

Autori:  Sani E., Mercatelli L., Meucci M., Zoli L., Sciti D

Affiliazione Autori:  CNR-INO National Institute of Optics, Largo E. Fermi, 6, I-50125, Firenze, Italy; CNR-ISTEC, Institute of Science and Technology for Ceramics, Via Granarolo 64, I-48018, Faenza, Italy

Riassunto:  We investigate the optical properties of LaB6 - based materials, as possible candidates for solid absorbers in Concentrating Solar Power (CSP) systems. Bulk LaB6 materials were thermally consolidated by hot pressing starting from commercial powders. To assess the solar absorbance and spectral selectivity properties, room-temperature hemispherical reflectance spectra were measured from the ultraviolet to the mid-infrared, considering different compositions, porosities and surface roughnesses. Thermal emittance at around 1100 K has been measured. Experimental results showed that LaB6 can have a solar absorbance comparable to that of the most advanced solar absorber material in actual plants such as Silicon Carbide, with a higher spectral selectivity. Moreover, LaB6 has also the appealing characteristics to be a thermionic material, so that it could act at the same time both as direct high-emperature solar absorber and as electron source, significantly reducing system complexity in future concentrating solar thermionic systems and bringing a real innovation in this field.

Rivista/Giornale:  SCIENTIFIC REPORTS
Volume n.:  7      Pagine da: 718-1  a: 718-7
Ulteriori informazioni:  Part of this activity has been carried out in the framework of the FIRB2012-SUPERSOLAR project RBFR12TIT1 funded by the Italian Ministry of University and Research. E.S. gratefully acknowledges the Italian bank foundation \"Fondazione Ente Cassa di Risparmio di Firenze\" for supporting this activity within the framework of \"SOLE NANO\" project (pratica no. 2015.0861). Thanks are due to Mr. M. D
DOI: 10.1038/s41598-017-00749-w


Riferimenti visionabili in IsiWeb of Knowledge: (solo per sottoscrittori)
Per visualizzare la scheda dell'articolo su IsiWeb: Clicca qui

INO © Istituto Nazionale di Ottica - Largo Fermi 6, 50125 Firenze | Tel. 05523081 Fax 0552337755 - P.IVA 02118311006     P.E.C.    Info