Controllable Thermal Rectification Realized in Binary Phase Change   Composites

doi:10.1038/srep08884

CORC > 北京大学 > 工学院

	Controllable Thermal Rectification Realized in Binary Phase Change Composites
	Chen, Renjie ; Cui, Yalong ; Tian, He ; Yao, Ruimin ; Liu, Zhenpu ; Shu, Yi ; Li, Cheng ; Yang, Yi ; Ren, Tianling ; Zhang, Gang ; Zou, Ruqiang
刊名	scientific reports
	2015
关键词	MULTILAYER GRAPHENE SILICON NANOWIRES GREEN SYNTHESIS HEAT-FLOW CONDUCTIVITY RECTIFIER FUNDAMENTALS MANAGEMENT PHONONICS TRANSPORT
DOI	10.1038/srep08884
英文摘要	Phase transition is a natural phenomenon happened around our daily life, represented by the process from ice to water. While melting and solidifying at a certain temperature, a high heat of fusion is accompanied, classified as the latent heat. Phase change material (PCM) has been widely applied to store and release large amount of energy attributed to the distinctive thermal behavior. Here, with the help of nanoporous materials, we introduce a general strategy to achieve the binary eicosane/PEG4000 stuffed reduced graphene oxide aerogels, which has two ends with different melting points. It's successfully demonstrated this binary PCM composites exhibits thermal rectification characteristic. Partial phase transitions within porous networks instantaneously result in one end of the thermal conductivity saltation at a critical temperature, and therefore switch on or off the thermal rectification with the coefficient up to 1.23. This value can be further raised by adjusting the loading content of PCM. The uniqueness of this device lies in its performance as a normal thermal conductor at low temperature, only exhibiting rectification phenomenon when temperature is higher than a critical value. The stated technology has broad applications for thermal energy control in macroscopic scale such as energy-efficiency building or nanodevice thermal management.; Multidisciplinary Sciences; SCI(E); PubMed; 0; ARTICLE; rentl@tsinghua.edu.cn; zhangg@ihpc.a-star.edu.sg; rzou@pku.edu.cn; 8884; 5
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/315613]
专题	工学院
推荐引用方式 GB/T 7714	Chen, Renjie,Cui, Yalong,Tian, He,et al. Controllable Thermal Rectification Realized in Binary Phase Change Composites[J]. scientific reports,2015.
APA	Chen, Renjie.,Cui, Yalong.,Tian, He.,Yao, Ruimin.,Liu, Zhenpu.,...&Zou, Ruqiang.(2015).Controllable Thermal Rectification Realized in Binary Phase Change Composites.scientific reports.
MLA	Chen, Renjie,et al."Controllable Thermal Rectification Realized in Binary Phase Change Composites".scientific reports (2015).