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Phase-change composites for bimodal solar/electromagnetic energy storage based on magnetite-modified cellulose microfibers.
- Source :
-
Materials Letters . Nov2022, Vol. 327, pN.PAG-N.PAG. 1p. - Publication Year :
- 2022
-
Abstract
- • Cellulose microfibers were modified with Fe 3 O 4 nanoparticles in a tunable way. • Adsorption of lauric acid onto Fe 3 O 4 -modified fibers leads to shape-stable PCM. • Magnetic PCM composites can store thermal energy under alternating magnetic field. • Magnetite nanoparticles improves light-to-thermal conversion of PCM composites. Fe 3 O 4 -modified cellulose microfibers containing 7, 16, and 31 wt% of magnetite were prepared via co-precipitation of Fe2+ and Fe3+ salts. The magnetic phase-change composites were synthesized by adsorption of lauric acid onto the modified fibers with the highest saturation magnetization (23 emu/g) and magnetic-to-thermal conversion. The resulted composites demonstrated the saturation magnetization of 11.2 emu/g and latent heat storage capacity of 90 J/g corresponding to the loading efficiency of lauric acid of 49–51 wt%. The IR-imaging revealed the efficient accumulation of latent heat in the phase-change composite under the simulated sunlight and high frequency alternating magnetic field along with the excellent shape stability of the composites during the melting of lauric acid. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 0167577X
- Volume :
- 327
- Database :
- Academic Search Index
- Journal :
- Materials Letters
- Publication Type :
- Academic Journal
- Accession number :
- 159056823
- Full Text :
- https://doi.org/10.1016/j.matlet.2022.132997