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Polyethylene glycol/silica (PEG@SiO2) composite inspired by the synthesis of mesoporous materials as shape-stabilized phase change material for energy storage

Author

Listed:
  • Li, Bingmeng
  • Shu, Dan
  • Wang, Ruifang
  • Zhai, Lanlan
  • Chai, Yuye
  • Lan, Yunjun
  • Cao, Hongwei
  • Zou, Chao

Abstract

Inspired by the common preparation method of mesoporous silica where polyethylene glycol (PEG) was used as template to obtain porous silica, PEG/silica (PEG@SiO2) composite as shape-stabilized phase change material for energy storage was well prepared. In this paper, PEG was used as phase change material (PCM) to store and release thermal energy and SiO2 acted as the supporting matrix. Various techniques were employed to characterize the structural and thermal properties of PEG@SiO2. The results indicate that PEG was encapsulated in SiO2 shell with physical interactions. The phase change enthalpy of PEG@SiO2 is 164.9 J/g in the melting process and 160.1 J/g in the solidifying process with the mass fraction of 97 wt%. It is a considerably exciting result as the value is so close to pristine PEG’s (178.6 J/g). PEG@SiO2 exhibited excellent thermal reliability based on the results of undergoing the heating-cooling cycle 100 times. Also, PEG@SiO2 had a good thermal stability within its working temperature range. This study provides a general approach for increasing the loading of PCMs in porous materials and thus the energy storage capability.

Suggested Citation

  • Li, Bingmeng & Shu, Dan & Wang, Ruifang & Zhai, Lanlan & Chai, Yuye & Lan, Yunjun & Cao, Hongwei & Zou, Chao, 2020. "Polyethylene glycol/silica (PEG@SiO2) composite inspired by the synthesis of mesoporous materials as shape-stabilized phase change material for energy storage," Renewable Energy, Elsevier, vol. 145(C), pages 84-92.
    • Handle: RePEc:eee:renene:v:145:y:2020:i:c:p:84-92
    DOI: 10.1016/j.renene.2019.05.118
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    Citations

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    Cited by:

    1. Li, Jiayin & Hu, Xiaowu & Zhang, Chuge & Luo, Wenxing & Jiang, Xiongxin, 2021. "Enhanced thermal performance of phase-change materials supported by mesoporous silica modified with polydopamine/nano-metal particles for thermal energy storage," Renewable Energy, Elsevier, vol. 178(C), pages 118-127.
    2. Liu, Changhui & Xiao, Tong & Zhao, Jiateng & Liu, Qingyi & Sun, Wenjie & Guo, Chenglong & Ali, Hafiz Muhammad & Chen, Xiao & Rao, Zhonghao & Gu, Yanlong, 2023. "Polymer engineering in phase change thermal storage materials," Renewable and Sustainable Energy Reviews, Elsevier, vol. 188(C).
    3. Quan, Bingqing & Wang, Jinzhi & Li, Yi & Sui, Miao & Xie, Heng & Liu, Zhigang & Wu, Hao & Lu, Xiang & Tong, Yi, 2023. "Cellulose nanofibrous/MXene aerogel encapsulated phase change composites with excellent thermal energy conversion and storage capacity," Energy, Elsevier, vol. 262(PB).
    4. Wang, Miao & Li, Pan & Yu, Faquan, 2021. "Hierarchical porous carbon foam-based phase change composite with enhanced loading capacity and thermal conductivity for efficient thermal energy storage," Renewable Energy, Elsevier, vol. 172(C), pages 599-605.
    5. Li, Chuanchang & Wang, Mengfan & Xie, Baoshan & Ma, Huan & Chen, Jian, 2020. "Enhanced properties of diatomite-based composite phase change materials for thermal energy storage," Renewable Energy, Elsevier, vol. 147(P1), pages 265-274.
    6. Sun, Shaofeng & Gao, Yan & Han, Na & Zhang, XingXiang & Li, Wei, 2021. "Reversible photochromic energy storage polyurea microcapsules via in-situ polymerization," Energy, Elsevier, vol. 219(C).
    7. Liu, Huan & Tian, Xinxin & Ouyang, Mize & Wang, Xiang & Wu, Dezhen & Wang, Xiaodong, 2021. "Microencapsulating n-docosane phase change material into CaCO3/Fe3O4 composites for high-efficient utilization of solar photothermal energy," Renewable Energy, Elsevier, vol. 179(C), pages 47-64.

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