Knowledge Management System Of Qinghai Institute of Salt Lakes,CAS
| Modified Calcium Chloride Hexahydrate Lotus Root Starch_Expanded Graphite Shape-Stabilized Composite Phase Change Materials | |
Tan, Xiaoling; Nian, Hongen ; Li, Jinhong; Zhou, Yongquan; Zhu, Fayan; Li, Xiang
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| 第一作者 | Tan, Xiaoling |
| 2021-09-16 | |
| 发表期刊 | ENERGY & FUELS
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| 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/363002/34304 |
| 专题 | 科研管理 |
| 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[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.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".ENERGY & FUELS 35.18(2021):15126-15132. |
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| Modified Calcium Chl（5803KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | 浏览 请求全文 | |
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