Encapsulation of copper-based phase change materials for high temperature thermal energy storage

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	Encapsulation of copper-based phase change materials for high temperature thermal energy storage
	Zhang, Guocai 1,2,3; Li, Jianqiang 1; Chen, Yunfa2 ; Xiang, Heng 4; Ma, Bingqian 4; Xu, Zhe 1; Ma, Xiaoguang 4
刊名	SOLAR ENERGY MATERIALS AND SOLAR CELLS
	2014-09-01
卷号	128 期号:SEP.页码:131-137
关键词	Phase change materials Encapsulation Electroplating Copper Chromium-nickel layer Charge-discharge cycle
ISSN号	0927-0248
其他题名	Sol. Energy Mater. Sol. Cells
中文摘要	Worldwide attention has been paid to high temperature phase change materials (PCMS) utilized in latent heat storage systems such as solar thermal power generation or industrial waste heat recovery. Current high temperature PCMs on basis of molten salts are suffering from inherent low thermal conductivity, which is detrimental to heat release rate and systematically thermal efficiency. Metal materials, always possessing ultrahigh thermal conductivity and satisfied heat fusion, are highly suitable as PCMs. However, the development of metal-based PCMs must overcome the package problem, namely, packing active, high temperature liquid metal into durable container. In this paper, copper capsules coated with refractory metallic shells were proposed as a novel metal PCM, which could work at temperature up to 1000 degrees C. Copper spheres with diameter of millimeters were encapsulated with a thick chromium-nickel bilayer by a novel chromium periodic-barrel electroplating method and nickel barrel-plating method. The latent heat density of as-prepared capsules is up to 75% of the theoretical value (about 71 J/g) at the melting temperature of 1077 degrees C and the thermal resistance of chromium-nickel layer is 8.27 x 10(-6) m(2) k/w. Particularly, copper capsules could endure 1000 charge-discharge thermal cycles from 1050 degrees C to 1150 degrees C without any leakage. The structure investigations reveal the excellent oxidation resistance of capsules and good stability between copper and chromium-nickel layer, even after long-term charge-discharge cycles. The results demonstrate that as-prepared copper capsules are applicable as high temperature PCMs which can facilitate high temperature thermal energy storage systems. (C) 2014 Elsevier B.V. All rights reserved.
英文摘要	Worldwide attention has been paid to high temperature phase change materials (PCMS) utilized in latent heat storage systems such as solar thermal power generation or industrial waste heat recovery. Current high temperature PCMs on basis of molten salts are suffering from inherent low thermal conductivity, which is detrimental to heat release rate and systematically thermal efficiency. Metal materials, always possessing ultrahigh thermal conductivity and satisfied heat fusion, are highly suitable as PCMs. However, the development of metal-based PCMs must overcome the package problem, namely, packing active, high temperature liquid metal into durable container. In this paper, copper capsules coated with refractory metallic shells were proposed as a novel metal PCM, which could work at temperature up to 1000 degrees C. Copper spheres with diameter of millimeters were encapsulated with a thick chromium-nickel bilayer by a novel chromium periodic-barrel electroplating method and nickel barrel-plating method. The latent heat density of as-prepared capsules is up to 75% of the theoretical value (about 71 J/g) at the melting temperature of 1077 degrees C and the thermal resistance of chromium-nickel layer is 8.27 x 10(-6) m(2) k/w. Particularly, copper capsules could endure 1000 charge-discharge thermal cycles from 1050 degrees C to 1150 degrees C without any leakage. The structure investigations reveal the excellent oxidation resistance of capsules and good stability between copper and chromium-nickel layer, even after long-term charge-discharge cycles. The results demonstrate that as-prepared copper capsules are applicable as high temperature PCMs which can facilitate high temperature thermal energy storage systems. (C) 2014 Elsevier B.V. All rights reserved.
WOS标题词	Science & Technology ; Technology ; Physical Sciences
类目[WOS]	Energy & Fuels ; Materials Science, Multidisciplinary ; Physics, Applied
研究领域[WOS]	Energy & Fuels ; Materials Science ; Physics
关键词[WOS]	LATENT-HEAT STORAGE ; PCM ; TECHNOLOGY
收录类别	SCI
原文出处	://WOS:000340300500017
语种	英语
WOS记录号	WOS:000340300500017
公开日期	2014-09-30
内容类型	期刊论文
版本	出版稿
源URL	[http://ir.ipe.ac.cn/handle/122111/11604]
专题	过程工程研究所_研究所（批量导入）
作者单位	1.Chinese Acad Sci, Natl Engn Lab Hydromet Cleaner Prod Technol, Inst Proc Engn, Beijing 100190, Peoples R China 2.Chinese Acad Sci, State Key Lab Multiphase Complex Syst, Inst Proc Engn, Beijing 100190, Peoples R China 3.Univ Chinese Acad Sci, Beijing 10049, Peoples R China 4.China Univ Geosci, Sch Engn & Technol, Beijing 100083, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Guocai,Li, Jianqiang,Chen, Yunfa,et al. Encapsulation of copper-based phase change materials for high temperature thermal energy storage[J]. SOLAR ENERGY MATERIALS AND SOLAR CELLS,2014,128(SEP.):131-137.
APA	Zhang, Guocai.,Li, Jianqiang.,Chen, Yunfa.,Xiang, Heng.,Ma, Bingqian.,...&Ma, Xiaoguang.(2014).Encapsulation of copper-based phase change materials for high temperature thermal energy storage.SOLAR ENERGY MATERIALS AND SOLAR CELLS,128(SEP.),131-137.
MLA	Zhang, Guocai,et al."Encapsulation of copper-based phase change materials for high temperature thermal energy storage".SOLAR ENERGY MATERIALS AND SOLAR CELLS 128.SEP.(2014):131-137.