Modified Calcium Chloride Hexahydrate Lotus Root Starch_Expanded Graphite Shape-Stabilized Composite Phase Change Materials Enhanced Heat Storage, Improved Heat Transfer, and Suppressed Supercooling Behavior

doi:10.1021/acs.energyfuels.1c01845

ISL OpenIR > 科研管理

	Modified Calcium Chloride Hexahydrate Lotus Root Starch_Expanded Graphite Shape-Stabilized Composite Phase Change Materials Enhanced Heat Storage, Improved Heat Transfer, and Suppressed Supercooling Behavior
	Tan, Xiaoling; Nian, Hongen; Li, Jinhong; Zhou, Yongquan; Zhu, Fayan; Li, Xiang
第一作者	Tan, Xiaoling
	2021-09-16
发表期刊	ENERGY & FUELS
ISSN	0887-0624
卷号	35 期号:18 页码:15126-15132
摘要	As one of the biological viscosity agents, lotus root starch (LRS) contains many hydrophilic groups with high water retention capacity. In this study, shape-stabilized composite phase change materials (PCMs) with LRS-modified calcium chloride hexahydrate (CCH) as a phase change material and expanded graphite (EG) as the supporting material were prepared by the vacuum impregnation method. The results showed that when 2 wt % LRS was added, the melting enthalpy of CCH-LRS2.0/EG reached 168.5 J/g, which was 13.3% more than that of CCH/EG. DFT calculation results showed that there were more hydroxyl groups in the molecular structure of CCH and the starch chain segment, which were easy to form hydrogen bonds. When hydrogen bonds were formed, they enhanced the water holding capacity and thermal properties. By adding 1.5 wt % SrCl2 center dot 6H(2)O (SCH) and 2.0 wt % LRS, the supercooling degree decreased to 2.4 degrees C, and the phase separation was restrained. The thermal conductivity of CCH-LRS2.0-SCH1.5/EG reached 3.030 W/(m.K), which was nearly 2.95 times that of CCH. After 100 cycles, the melting enthalpy of the CCH-LRS2.0-SCH1.5/EG composite PCM only decreased 3.3%. The shape-stabilized composite phase change material has a good application prospect in heat storage.
DOI	10.1021/acs.energyfuels.1c01845
引用统计
文献类型	期刊论文
条目标识符	http://ir.isl.ac.cn/handle/363002/34303
专题	科研管理青海盐湖研究所知识仓储
推荐引用方式 GB/T 7714	Tan, Xiaoling,Nian, Hongen,Li, Jinhong,et al. Modified Calcium Chloride Hexahydrate Lotus Root Starch_Expanded Graphite Shape-Stabilized Composite Phase Change Materials Enhanced Heat Storage, Improved Heat Transfer, and Suppressed Supercooling Behavior[J]. ENERGY & FUELS,2021,35(18):15126-15132.
APA	Tan, Xiaoling,Nian, Hongen,Li, Jinhong,Zhou, Yongquan,Zhu, Fayan,&Li, Xiang.(2021).Modified Calcium Chloride Hexahydrate Lotus Root Starch_Expanded Graphite Shape-Stabilized Composite Phase Change Materials Enhanced Heat Storage, Improved Heat Transfer, and Suppressed Supercooling Behavior.ENERGY & FUELS,35(18),15126-15132.
MLA	Tan, Xiaoling,et al."Modified Calcium Chloride Hexahydrate Lotus Root Starch_Expanded Graphite Shape-Stabilized Composite Phase Change Materials Enhanced Heat Storage, Improved Heat Transfer, and Suppressed Supercooling Behavior".ENERGY & FUELS 35.18(2021):15126-15132.