Journal ArticleDOI
Graphene oxide stabilized polyethylene glycol for heat storage
Chongyun Wang,Chongyun Wang,Lili Feng,Huazhe Yang,Gongbiao Xin,Wei Li,Jie Zheng,Wenhuai Tian,Xingguo Li +8 more
TLDR
Because of the high heat storage capacity and the moderate phase change temperature, the PEG-GO composite is a promising heat energy storage candidate at mild temperature.Abstract:
Graphene oxide (GO) sheets were introduced to stabilize the melted polyethylene glycol (PEG) during the solid–liquid phase change process, which can be used as a smart heat storage system. The structural properties and phase change behaviors of the PEG–GO composites were comprehensively investigated as a function of the PEG content by means of various characterization techniques. The highest stabilized PEG content is 90 wt% in the composites, resulting in a heat storage capacity of 156.9 J g−1, 93.9% of the phase change enthalpy of pure PEG. Notably, GO has much stronger impact on lowering of the phase change temperature of PEG compared with some other porous carbon materials (activated carbon and ordered mesoporous carbon) due to the unique thin layer structure of GO. Because of the high heat storage capacity and the moderate phase change temperature, the PEG–GO composite is a promising heat energy storage candidate at mild temperature.read more
Citations
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Nanoconfined phase change materials for thermal energy applications
TL;DR: In this article, a review summarizes the recent advancement and critical issues of nanoconfinement technologies of phase change materials from the point of view of material design, and the potential applications of nan-fined PCMs in diverse fields, including energy conversion and storage, thermal rectification and temperature controlled drug delivery systems, are presented in detail.
Journal ArticleDOI
Cellulose/graphene aerogel supported phase change composites with high thermal conductivity and good shape stability for thermal energy storage
TL;DR: In this article, a phase change composites is prepared by vacuum assisted impregnating of polyethylene glycol (PEG) into the cellulose/GNP aerogels, which exhibit high thermal conductivity, good shape stability and high latent heat of fusion.
Journal ArticleDOI
Role of oxygen functional groups in reduced graphene oxide for lubrication
Bhavana Gupta,Bhavana Gupta,Niranjan Kumar,Kalpataru Panda,Vigneshwaran Kanan,Shailesh Joshi,Iris Visoly-Fisher +6 more
TL;DR: Antiwear properties of hydroxyl-terminated rGO were significantly enhanced compared to epoxy-hydroxyl functionalized rGO due to the integrity of graphene sheet clusters, and the friction coefficient was unaffected when hydroxy-terminate rGO was coupled with PEG.
Journal ArticleDOI
Hybrid graphene aerogels/phase change material composites: Thermal conductivity, shape-stabilization and light-to-thermal energy storage
Jie Yang,Guo-Qiang Qi,Yang Liu,Rui-Ying Bao,Zheng-Ying Liu,Wei Yang,Bang-Hu Xie,Ming-Bo Yang +7 more
TL;DR: Hybrid graphene aerogels (HGA) consisting of graphene oxide (GO) and graphene nanoplatelets (GNP) were prepared and introduced into polyethylene glycol (PEG) via vacuum impregnation, aiming at obtaining composite phase change materials (PCMs) with high thermal conductivity, outstanding shape-stabilization, high energy storage density, commendable thermal repeatability and the ability to light-to-heat energy storage.
Journal ArticleDOI
Honeycomb-like structured biological porous carbon encapsulating PEG: A shape-stable phase change material with enhanced thermal conductivity for thermal energy storage
TL;DR: In this article, a composite phase change materials (c-PCMs) composed of polyethylene glycol (PEG) and biological porous carbon (BPC) is investigated.
References
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Journal ArticleDOI
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Journal ArticleDOI
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Journal ArticleDOI
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