Design and preparation of shape-stabilized composite phase change material with high thermal reliability via encapsulating polyethylene glycol into flower-like TiO2 nanostructure for thermal energy storage
文献类型：期刊论文
| 作者 | Deng, Yong1; Li, Jinhong1; Nian, Hongen2 ; Li, Yali1; Yin, Xiaoping1
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| 刊名 | APPLIED THERMAL ENGINEERING
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| 出版日期 | 2017-03-05 |
| 卷号 | 114页码:328-336 |
| 关键词 | Polyethylene Glycol Flower-like Tio2 Nanostructure Shape-stabilized Composite Phase Change Material Thermal Reliability Enhancement |
| 文献子类 | Article |
| 英文摘要 | Flower-like TiO2 nanostructure (FLN-TiO2) with specific surface area of 117.61 m(2)/g, pore diameter of 3.75 nm, and spherical diameter of about 1-2 mu m was synthesized by a simple hydrothermal method. The obtained FLN-TiO2 was employed to encapsulate polyethylene glycol (PEG) as phase change material to overcome liquid leakage during phase transition and enhance the thermal reliability of the PEG/FLN-TiO2 shape-stabilized composite phase change material (ss-CPCM) after a large number of thermal cycles. SEM analysis results showed that abundant PEG was well enwrapped and dispersed inside the pores and surfaces of FLN-TiO2 due to the effect of capillary force and surface tension. The maximum encapsulation capacity of PEG with good shape stability was 50.2 wt.%. Excellent chemical compatibility between PEG and FLN-TiO2 was confirmed by FT-IR results. DSC results indicated that the phase change temperature of the PEG/FLN-TiO2 ss-CPCM in melting and solidification process was respectively 53.6 degrees C and 20.1 degrees C and corresponding latent heats were 93.68 J/g and 91.07 J/g, respectively. The weak physical interaction between the PEG and surface of FLN-TiO2 led to the lower phase change temperatures of PEG/FLN-TiO2 ss-CPCM. Different heating and cooling rates were responsible for the shift of melting/solidification temperature of PEG and PEG/FLN-TiO2 ss-CPCM. Thermal cycling test results showed that the PEG/FLN-TiO2 ss-CPCM exhibited excellent thermal reliability within at least 200 melting/solidifying cycles and demonstrated that the FLN-TiO2 benefited the thermal reliability enhancement. (C) 2016 Elsevier Ltd. All rights reserved. |
| WOS关键词 | MESOPOROUS SILICA ; N-OCTADECANE ; CARBON ; CONDUCTIVITY ; PERFORMANCE ; FABRICATION ; ENHANCEMENT ; VERMICULITE ; SIMULATION ; BEHAVIOR |
| WOS研究方向 | Thermodynamics ; Energy & Fuels ; Engineering ; Mechanics |
| 语种 | 英语 |
| WOS记录号 | WOS:000395725400031 |
| 源URL | [http://ir.isl.ac.cn/handle/363002/6206]  |
| 专题 | 青海盐湖研究所_青海盐湖研究所知识仓储 青海盐湖研究所_盐湖资源与化学实验室 |
| 作者单位 | 1.China Univ Geosci, Beijing Key Lab Mat Utilizat Nonmet Minerals & So, Natl Lab Mineral Mat, Sch Mat Sci & Technol, Beijing 100083, Peoples R China 2.Chinese Acad Sci, Qinghai Inst Salt Lake, Xining 810008, Peoples R China |
| 推荐引用方式 GB/T 7714 | Deng, Yong,Li, Jinhong,Nian, Hongen,et al. Design and preparation of shape-stabilized composite phase change material with high thermal reliability via encapsulating polyethylene glycol into flower-like TiO2 nanostructure for thermal energy storage[J]. APPLIED THERMAL ENGINEERING,2017,114:328-336. |
| APA | Deng, Yong,Li, Jinhong,Nian, Hongen,Li, Yali,&Yin, Xiaoping.(2017).Design and preparation of shape-stabilized composite phase change material with high thermal reliability via encapsulating polyethylene glycol into flower-like TiO2 nanostructure for thermal energy storage.APPLIED THERMAL ENGINEERING,114,328-336. |
| MLA | Deng, Yong,et al."Design and preparation of shape-stabilized composite phase change material with high thermal reliability via encapsulating polyethylene glycol into flower-like TiO2 nanostructure for thermal energy storage".APPLIED THERMAL ENGINEERING 114(2017):328-336. |
入库方式： OAI收割
来源：青海盐湖研究所
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