Superior Form-Stable Phase Change Material Made with Graphene-Connected Carbon Nanofibers and Fatty Acid Eutectics
A novel form-stable phase change material (FSPCM) with remarkable improvement in thermal properties was fabricated by incorporating ternary fatty acid eutectics with graphene sheetconnected electrospun carbon nanofibers (GCNFs). The GCNFs possessed three-dimensional (3D) porous architecture
and large specific surface area while provided mechanical support for FSPCM and effectively prevented flow/leakage of molten fatty acid. The GCNF based FSPCM exhibited desire structural morphology with lauric-myristic-stearic acid (LA-MA-SA) eutectic mixture being well dispersed in a 3D porous
architecture. This novel FSPCM demonstrated superior thermal storage/retrieval capability and temperature regulation ability as well as good shape stability and thermal cycling stability. The melting and crystallization enthalpies of the fabricated FSPCMs were up to 120.4 and 120.1 kJ/kg,
respectively. The thermal conductivity of the fabricated FSPCMs was 337% and 188% higher than that of LA-MA-SA eutectic mixture and a control sample without graphene, respectively, which ranked the top among the literature about LA-MA-SA eutectic mixture derived composite FSPCMs. Furthermore,
the heating/cooling efficiency of the prepared FSPCMs was 45.7/64.9% higher than that of LA-MA-SA eutectic mixture.
Keywords: Form-Stable Phase Change Material (FSPCM); Graphene Sheet-Connected Carbon Nanofibers (GCNFs); Lauric-Myristic-Stearic Acid (LA-MA-SA) Eutectic Mixture; Thermal Properties
Document Type: Research Article
Affiliations: 1: Key Laboratory of Eco-Textiles, Ministry of Education, Jiangnan University, Wuxi, Jiangsu 214122, People's Republic of China 2: Joint School of Nanoscience and Nanoengineering, North Carolina Agricultural and Technical State University, Greensboro, NC 27401, United States
Publication date: 01 November 2019
- Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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