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Synthesis of novel shape-stabilized phase change materials with high latent heat and low supercooling degree for thermal energy storage

  • Yu Li (a1), Liang Zhao (a1), Hao Wang (a1) and Baohua Li (a2)

Abstract

In this work, a novel shape-stabilized phase change material, composed of n-octadecane, expanded graphite (EG), and sodium chloride (NaCl), was prepared by a convenient method. In the composite, EG was used as the matrix material and NaCl served as the nucleating agent. Effects of the additional amount of NaCl on the thermal properties of the composite were investigated by DSC and TG. The melting and crystallization enthalpies of the composite are −160.23 J/g and 162.80 J/g, respectively; the supercooling degree of the composite decreased to 3.77 °C when compared to 7.58 °C of the pure n-octadecane. Furthermore, the thermal cycling performances became better, and the thermal decomposition temperature improved to 150 °C. The composite exhibited high latent heat, low supercooling degree, good thermal cycling performance, and enhanced thermal stability, making it a potential material for the thermal energy storage application in the field of thermal regulation.

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Corresponding author

a)Address all correspondence to this author. e-mail: libh@sz.tsinghua.edu.cn

References

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1.Tyagi, V.V., Panwar, N.L., Rahim, N.A., and Kothari, R.: Review on solar air heating system with and without thermal energy storage system. Renewable Sustainable Energy Rev. 16, 2289 (2012).
2.Sharma, A., Tyagi, V.V., Chen, C.R., and Buddhi, D.: Review on thermal energy storage with phase change materials and applications. Renewable Sustainable Energy Rev. 13, 318 (2009).
3.Qiu, X., Li, W., Song, G., Chu, X., and Tang, G.: Fabrication and characterization of microencapsulated n-octadecane with different crosslinked methylmethacrylate-based polymer shells. Sol. Energy Mater. Sol. Cells 98, 283 (2012).
4.Shimamura, S. and Sotoike, Y.: Computer modeling of thermal shock-induced crack-growth in brittle materials. J. Mater. Res. 7, 1286 (1992).
5.Alkan, C.: Enthalpy of melting and solidification of sulfonated paraffins as phase change materials for thermal energy storage. Thermochim. Acta 451, 126 (2006).
6.Li, G., Zhang, B., Li, X., Zhou, Y., Sun, Q., and Yun, Q.: The preparation, characterization and modification of a new phase change material: CaCl2·6H2O–MgCl2·6H2O eutectic hydrate salt. Sol. Energy Mater. Sol. Cells 126, 51 (2014).
7.Cao, L., Tang, F., and Fang, G.: Preparation and characteristics of microencapsulated palmitic acid with TiO2 shell as shape-stabilized thermal energy storage materials. Sol. Energy Mater. Sol. Cells 123, 183 (2014).
8.Qiu, X., Lu, L., Wang, J., Tang, G., and Song, G.: Preparation and characterization of microencapsulated n-octadecane as phase change material with different n-butyl methacrylate-based copolymer shells. Sol. Energy Mater. Sol. Cells 128, 102 (2014).
9.Derlet, P.M. and Maass, R.: Thermal processing and enthalpy storage of a binary amorphous solid: A molecular dynamics study. J. Mater. Res. 32, 2668 (2017).
10.Sarier, N. and Onder, E.: Organic phase change materials and their textile applications: An overview. Thermochim. Acta 540, 7 (2012).
11.Zhang, H. and Wang, X.: Synthesis and properties of microencapsulated n-octadecane with polyurea shells containing different soft segments for heat energy storage and thermal regulation. Sol. Energy Mater. Sol. Cells 93, 1366 (2009).
12.Zhao, C.Y. and Zhang, G.H.: Review on microencapsulated phase change materials (MEPCMs): Fabrication, characterization and applications. Renewable Sustainable Energy Rev. 15, 3813 (2011).
13.Zhang, Z.G. and Fang, X.M.: Study on paraffin/expanded graphite composite phase change thermal energy storage material. Energy Convers. Manage. 47, 303 (2006).
14.Tan, Y., Lin, D., Liu, C., Wang, W., Kang, L., and Ran, F.: Carbon nanofibers prepared by electrospinning accompanied with phase-separation method for supercapacitors: Effect of thermal treatment temperature. J. Mater. Res. 33, 1120 (2018).
15.Zhang, Y.P., Lin, K.P., Yang, R., Di, H.F., and Jiang, Y.: Preparation, thermal performance and application of shape-stabilized PCM in energy efficient buildings. Energy Build. 38, 1262 (2006).
16.Parameshwaran, R., Jayavel, R., and Kalaiselvam, S.: Study on thermal properties of organic ester phase-change material embedded with silver nanoparticles. J. Therm. Anal. Calorim. 114, 845 (2013).
17.Yang, Y., Luo, J., Li, S., Song, G., Liu, Y., and Tang, G.: The experimental exploration of sodium chloride solution on thermal behavior of phase change materials. Sol. Energy Mater. Sol. Cells 139, 88 (2015).
18.Karaipekli, A., Sari, A., and Kaygusuz, K.: Thermal conductivity improvement of stearic acid using expanded graphite and carbon fiber for energy storage applications. Renewable Energy 32, 2201 (2007).
19.Zhao, L., Luo, J., Wang, H., Song, G., and Tang, G.: Self-assembly fabrication of microencapsulated n-octadecane with natural silk fibroin shell for thermal-regulating textiles. Appl. Therm. Eng. 99, 495 (2016).
20.Kousksou, T., Arid, A., Jamil, A., and Zeraouli, Y.: Thermal behavior of building material containing microencapsulated PCM. Thermochim. Acta 550, 42 (2012).

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