Hydrophilic expanded graphite-magnesium nitrate hexahydrate composite phase change materials Understanding the effect of hydrophilic modification on thermophysical properties

doi:10.1002/er.4336

CORC > 青海盐湖研究所 > 中国科学院青海盐湖研究所 > 盐湖资源综合利用工程技术中心

	Hydrophilic expanded graphite-magnesium nitrate hexahydrate composite phase change materials Understanding the effect of hydrophilic modification on thermophysical properties
	Zhang, Yue; Sun, Jinhe; Ma, Guixiang; Wang, Zhao; Xie, Shaolei; Jing, Yan; Jia, Yongzhong
刊名	INTERNATIONAL JOURNAL OF ENERGY RESEARCH
	2019-03-10
卷号	43 期号:3 页码:1121-1132
ISSN号	0363-907X
DOI	10.1002/er.4336
英文摘要	Expanded graphite (EG) has shown excellent performances in compression resilience, thermal conductivity, and adsorption ability. EG can adsorb liquid phase change materials (PCMs) mainly because of capillary action; however, EG is hydrophobic, which makes it less compatible with hydrated salts. Herein, hydrophilic EG (HEG) was prepared with Triton X-100 (TX-100) as surface modifier. The HEG-magnesium nitrate hexahydrate (HEG-MNH) composite as a PCM was investigated for thermal energy storage (TES) to understand the effect of hydrophilic modification on thermophysical properties. The powder-state HEG is added into MNH to prepare HEG-MNH composite PCM, which contains 1.71 wt% of TX-100, 7.29 wt% of EG, and 91.00 wt% of MNH by control variable method. The melting point and latent heat of HEG-MNH composite PCM were 89.05 degrees C and 137.28 J/g, respectively. The endothermic enthalpy change of HEG-MNH composite PCM only decreased by 0.90%, along with the exothermic values of HEG-MNH composite that increased by 3.80% after 100 cycles. The thermal conductivity is higher 5.17 times than that of the pure MNH. Our work suggests that the HEG-MNH composite PCM has a great potential to be used as a PCM for TES.
内容类型	期刊论文
源URL	[http://ir.isl.ac.cn/handle/363002/34057]
专题	青海盐湖研究所_盐湖资源综合利用工程技术中心中国科学院青海盐湖研究所
推荐引用方式 GB/T 7714	Zhang, Yue,Sun, Jinhe,Ma, Guixiang,et al. Hydrophilic expanded graphite-magnesium nitrate hexahydrate composite phase change materials Understanding the effect of hydrophilic modification on thermophysical properties[J]. INTERNATIONAL JOURNAL OF ENERGY RESEARCH,2019,43(3):1121-1132.
APA	Zhang, Yue.,Sun, Jinhe.,Ma, Guixiang.,Wang, Zhao.,Xie, Shaolei.,...&Jia, Yongzhong.(2019).Hydrophilic expanded graphite-magnesium nitrate hexahydrate composite phase change materials Understanding the effect of hydrophilic modification on thermophysical properties.INTERNATIONAL JOURNAL OF ENERGY RESEARCH,43(3),1121-1132.
MLA	Zhang, Yue,et al."Hydrophilic expanded graphite-magnesium nitrate hexahydrate composite phase change materials Understanding the effect of hydrophilic modification on thermophysical properties".INTERNATIONAL JOURNAL OF ENERGY RESEARCH 43.3(2019):1121-1132.