Flame-retardant wood-based composite phase change materials based on PDMS/expanded graphite coating for efficient solar-to-thermal energy storage

Xunhe Deng, Cong Li, Xiaohan Sun, Chengyu Wang, Baosheng Liu, Yudong Li and Haiyue Yang

Applied Energy, 2024, vol. 368, issue C, No S0306261924008377

Abstract: Wood-based composite phase change materials (PCMs) have considerable development potential in shape-stable thermal energy storage. However, Wood-based composite PCMs possess inflammability due to wood-based supporting materials and organic PCM, which limits its practical application. In this work, a novel strategy of wood-based composite PCMs with flame retardant coating is adopted, in which the introduction of expanded graphite (EG)-based coating can not only enhance the flame retardant property, and EG can be used as photothermal material to improve the photothermal conversion efficiency. The flame-retardant wood-based composite PCMs show excellent flame retardant properties, which peak of heat release rate (pHRR) is reduced by 40.1–52.3% compared with PEG-1000@delignified wood (DW). It is worth noting that when the amount of EG is >0.5 g, the flame-retardant wood-based composite PCMs can be completely protected in the ignition combustion test, and the combustion flame is extinguished by itself. The loading mass fraction of the PEG-1000 of the flame-retardant wood-based composite PCMs is 53.1–73.4%, which shows that it has good energy storage performance. At the same time, the flame-retardant wood-based composite PCMs still have good cycle reliability after 100 heating-cooling cycles. Due to the excellent light absorption properties of EG, the flame-retardant wood-based composite PCMs exhibit excellent photothermal conversion efficiency (68.1–80.0%), which has considerable application potential in solar energy utilization systems and thermal management.

Keywords: Wood-based phase change materials; Expanded graphite; Flame retardance; Photothermal conversion (search for similar items in EconPapers)
Date: 2024
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0306261924008377
Full text for ScienceDirect subscribers only

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:eee:appene:v:368:y:2024:i:c:s0306261924008377

Ordering information: This journal article can be ordered from
http://www.elsevier.com/wps/find/journaldescription.cws_home/405891/bibliographic
http://www.elsevier. ... 405891/bibliographic

DOI: 10.1016/j.apenergy.2024.123454

Access Statistics for this article

Applied Energy is currently edited by J. Yan

More articles in Applied Energy from Elsevier
Bibliographic data for series maintained by Catherine Liu ().