Thermochemical Storage of Middle Temperature Wasted Heat by Functionalized C/Mg(OH) 2 Hybrid Materials

Emanuela Mastronardo, Yukitaka Kato, Lucio Bonaccorsi, Elpida Piperopoulos and Candida Milone
Additional contact information
Emanuela Mastronardo: National Interuniversity Consortium of Materials Science and Technology (INSTM), 50121 Florence, Italy
Yukitaka Kato: Laboratory for Advanced Nuclear Energy, Institute of Innovative Research, Tokyo Institute of Technology, Tokyo 152-8550, Japan
Lucio Bonaccorsi: Department of Civil, Energetic, Environmental and Materials Engineering, Mediterranean University of Reggio Calabria, 89124 Reggio Calabria, Italy
Elpida Piperopoulos: Department of Engineering, University of Messina, 98166 Messina, Italy
Candida Milone: Department of Engineering, University of Messina, 98166 Messina, Italy

Energies, 2017, vol. 10, issue 1, 1-16

Abstract: For the thermochemical performance implementation of Mg(OH) 2 as a heat storage medium, several hybrid materials have been investigated. For this study, high-performance hybrid materials have been developed by exploiting the authors’ previous findings. Expanded graphite (EG)/carbon nanotubes (CNTs)-Mg(OH) 2 hybrid materials have been prepared through Mg(OH) 2 deposition-precipitation over functionalized, i.e., oxidized, or un-functionalized EG or CNTs. The heat storage performances of the carbon-based hybrid materials have been investigated through a laboratory-scale experimental simulation of the heat storage/release cycles, carried out by a thermogravimetric apparatus. This study offers a critical evaluation of the thermochemical performances of developed materials through their comparison in terms of heat storage and output capacities per mass and volume unit. It was demonstrated that both EG and CNTs improves the thermochemical performances of the storage medium in terms of reaction rate and conversion with respect to pure Mg(OH) 2 . With functionalized EG/CNTs-Mg(OH) 2 , (i) the potential heat storage and output capacities per mass unit of Mg(OH) 2 have been completely exploited; and (ii) higher heat storage and output capacities per volume unit were obtained. That means, for technological applications, as smaller volume at equal stored/released heat.

Keywords: thermochemical storage; magnesium hydroxide; exfoliated graphite; graphene oxide; carbon nanotubes (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2017
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (4)

Downloads: (external link)
https://www.mdpi.com/1996-1073/10/1/70/pdf (application/pdf)
https://www.mdpi.com/1996-1073/10/1/70/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:10:y:2017:i:1:p:70-:d:87320

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().