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Ultrahigh-Porosity MgO Microparticles for Heat-Energy Storage
  • Kim, Youngho ;
  • Dong, Xue ;
  • Chae, Sudong ;
  • Asghar, Ghulam ;
  • Choi, Sungwoong ;
  • Kim, Bum Jun ;
  • Choi, Jae Young ;
  • Yu, Hak Ki
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Publication Year
2023-10-26
Journal
Advanced Materials
Publisher
John Wiley and Sons Inc
Citation
Advanced Materials, Vol.35 No.43
Keyword
buffering volume expansionextensive specific surface areasheat-storage systemshydration reactionsultrahigh-porosity MgO
Mesh Keyword
Buffering volume expansionEco-friendlyExtensive specific surface areaHeat energy storageHeat storage systemsHydration reactionIndustrial developmentMicro particlesUltrahigh-porosity MgOVolume expansion
All Science Classification Codes (ASJC)
Materials Science (all)Mechanics of MaterialsMechanical Engineering
Abstract
Continuous industrial development has increased the demand of energy. Inevitably, the development of energy sources is steadily progressing using various methods. Rather than establishing a new energy source, a system for storing waste heat generated by industry has now been accepted as a useful strategy. Among such systems, the hydration and dehydration reactions of MgO/Mg(OH)2 are eco-friendly, have relatively low toxicity and risk, and have a large reserves. Therefore, it is a promising candidate for a heat-storage system. In this study, ultrahigh-porosity particles are used to maximize the heat-storage efficiency of pure MgO. Due to its large surface area, the heat storage rate is 90.3% of the theoretical value and the reaction rate is very high. In addition, as structural collapse, likely to be caused by volume changes between reactions, is blocked as the porous region is filled and emptied, the cycle stability is secured. Ultrahigh-porosity MgO microparticles can be used to build eco-friendly heat-storage systems.
ISSN
1521-4095
Language
eng
URI
https://aurora.ajou.ac.kr/handle/2018.oak/32834
https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85135502203&origin=inward
DOI
https://doi.org/2-s2.0-85135502203
Journal URL
http://onlinelibrary.wiley.com/journal/10.1002/(ISSN)1521-4095
Type
Article
Funding
This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korean government (MSIT) (2019R1A2C1006972, 2020R1A2C2010984, and 2021R1A4A1031357).
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Yu, Hak Ki류학기
Department of Materials Science Engineering
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