Institutional Repository of Coll Mat Sci & Engn
Preparation and properties of Al/Al2O3 core-shell microencapsulated phase change material | |
Li, Qinglin1; Ma, Xiaodong1; Zhang, Xiaoyu2; Ma, Jiqiang1; Liu, Jiaolong1; Hu, Xiaowu3; Lan, Yefeng1 | |
2021-12-25 | |
发表期刊 | JOURNAL OF ALLOYS AND COMPOUNDS |
ISSN | 0925-8388 |
卷号 | 888 |
摘要 | With the industrial development, the energy crisis has become a dreadfully serious problem in the world. Therefore, the development of high-durable phase change materials (PCMs) over 600 degrees C is very important for the high-temperature heat energy storage system. An improved three-step process of micro-en-capsulated PCMs (MEPCMs) was proposed in this work, including boehmite-precipitation-thermal oxida-tion treatment, which are beneficial to disperse the thermal stress during high-temperature cycling and restrain crack propagation due to forming a dense and durable Al2O3 shell. The cross-section structure, the surface morphology, phase compositions, phase change temperature, thermal durability and cycling stability were simultaneously investigated. In addition, boehmite-precipitation treatment was performed in an aqueous solution with different adding amounts of Al(OH)(3). The thickness of the Al2O3 shell layer was adjusted by control of the amount of Al(OH)(3). The latent heat of the MEPCMs with the adding amount of 2 g/L Al(OH)(3) reached 180 J/g, and the released heat was 110 J/g after 100 cycles of melting-solidification. Furthermore, TEM observation further confirmed the formation of theta-Al2O3 crystal structure on the surface, which is helpful to the durability. Every MEPCM kept a completely spherical shape and a dense surface after 100 cycles of melting-solidification. Therefore, the MEPCMs with excellent heat storage capacity and high thermal stability were widely used to recycle industry, such as waste heat, building energy conservation and aerospace. In addition, the new processing technology can provide excellent and industrial production of PCMs in the future. (C) 2021 Elsevier B.V. All rights reserved. |
关键词 | Micro-encapsulation Phase change materials Latent heat storage High temperature |
DOI | 10.1016/j.jallcom.2021.161606 |
收录类别 | SCIE |
语种 | 英语 |
WOS研究方向 | Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering |
WOS类目 | Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
WOS记录号 | WOS:000704768400001 |
出版者 | ELSEVIER SCIENCE SA |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | https://ir.lut.edu.cn/handle/2XXMBERH/149955 |
专题 | 材料科学与工程学院 省部共建有色金属先进加工与再利用国家重点实验室 |
作者单位 | 1.Lanzhou Univ Technol, Sch Mat Sci & Engn, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Peoples R China; 2.Chongqing Univ Arts & Sci, Chongqing Engn Res Ctr New Energy Storage Devices, Chongqing 402160, Peoples R China; 3.Nanchang Univ, Sch Mech & Elect Engn, Nanchang 330031, Jiangxi, Peoples R China |
第一作者单位 | 材料科学与工程学院 |
第一作者的第一单位 | 材料科学与工程学院 |
推荐引用方式 GB/T 7714 | Li, Qinglin,Ma, Xiaodong,Zhang, Xiaoyu,et al. Preparation and properties of Al/Al2O3 core-shell microencapsulated phase change material[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2021,888. |
APA | Li, Qinglin.,Ma, Xiaodong.,Zhang, Xiaoyu.,Ma, Jiqiang.,Liu, Jiaolong.,...&Lan, Yefeng.(2021).Preparation and properties of Al/Al2O3 core-shell microencapsulated phase change material.JOURNAL OF ALLOYS AND COMPOUNDS,888. |
MLA | Li, Qinglin,et al."Preparation and properties of Al/Al2O3 core-shell microencapsulated phase change material".JOURNAL OF ALLOYS AND COMPOUNDS 888(2021). |
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