Journal
JOURNAL OF ENERGY STORAGE
Volume 55, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.est.2022.105661
Keywords
Nanomaterials; Nanoparticles; Nanofluid; Energy storage; Solar energy; Solar -thermal conversion
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With the increase in population and development of technology, the demand for energy has also risen. However, due to the limitedness of energy resources, new research and inventions are necessary to ensure continuous and efficient consumption of these resources. Solar energy, being an unlimited, clean, and abundant energy source, holds great potential in meeting energy demand. However, the usage of solar energy is subject to seasonal variations. Therefore, storage and conversion of solar energy become crucial to maximize its utilization. The application of nanomaterials and phase change materials play significant roles in improving the storage and conversion efficiency of solar thermal energy.
By the increase of population and development of technology in recent years, energy demand has also increased. Due to the limitedness of energy resources, new research works and inventions are needed to ensure the con-tinuity and efficient consumption of these sources and addressing economic problems. It is important to provide low-cost energy in living, industrial and commercial spaces with zero emission. Solar energy is an unlimited, clean and abundant energy source. However, the conditions of taking full advantage of sun vary seasonally. With the storage and conversion of solar energy, the sun, which is abundant in the summer period, can be used in the winter period. In this case, energy storage and conversion performance is extremely important to obtain the highest rate and efficiency from solar energy. The application and development of nanomaterials are popular issues in all fields, especially in energy storage and conversion applications, and play key roles in storage effi-ciency. Furthermore, phase change materials (PCMs) have successful and potential applications in the storage and conversion of solar thermal energy. In this study, research on efficient nanomaterials used in solar energy storage and conversion has been reviewed and discussed. According to the reviewed studies, efficiency was increased with the use of nanomaterials in solar energy storage and conversion systems. Particular attention was paid to the high charge and discharge rates of graphene and graphite-containing nanomaterials, as well as nanoparticles and composite materials added to PCMs. In addition, it has been stated that thermal energy is stored efficiently by the application of PEG support to composite materials. According to previous studies, the size, concentration, shape, and phase change of materials had critical effects on the storage efficiency of com-posite materials.
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