Polyethylene Glycol Based Graphene Aerogel Confined Phase Change Materials with High Thermal Stability

被引：29

作者：

Fu, Yang ^{[1
]}

Xiong, Weilai ^{[1
]}

Wang, Jianying ^{[1
]}

Li, Jinghua ^{[1
]}

Mei, Tao ^{[1
]}

Wang, Xianbao ^{[1
]}

机构：

[1] Hubei Univ, Sch Mat Sci & Engn, Hubei Collaborat Innovat Ctr Adv Organ Chem Mat, Minist Of Educ,Key Lab Green Preparat & Applicat, Wuhan 430062, Peoples R China

来源：

JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY | 2018年 / 18卷 / 05期

基金：

中国国家自然科学基金;

关键词：

Polyethylene Glycol; Graphene Aerogel; Phase Change Materials; Thermal Stability; ENERGY STORAGE PROPERTIES; SHAPE-STABILIZATION; CHANGE FIBERS; COMPOSITES; PERFORMANCE; CONDUCTIVITY; TEMPERATURE; MORPHOLOGY; NANOSHEETS; MATRICES;

D O I：

10.1166/jnn.2018.14635

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Polyethylene glycol (PEG) based graphene aerogel (GA) confined shaped-stabilized phase change materials (PCMs) are simply prepared by a one-step hydrothermal method. Three-dimensional GA inserted by PEG molecule chains, as a supporting material, obtained by reducing graphene oxide sheets, is used to keep their stabilized shape during a phase change process. The volume of GA is obviously expended after adding PEG, and only 9.8 wt% of GA make the composite achieve high energy efficiency without leakage during their phase change because of hydrogen bonding widely existing in the GA/PEG composites (GA-PCMs). The heat storage energy of GA-PCMs is 164.9 J/g, which is 90.2% of the phase change enthalpy of pure PEG. In addition, this composite inherits the natural thermal properties of graphene and thus shows enhanced thermal conductivity compared with pure PEG. This novel study provides an efficient way to fabricate shape-stabilized PCMs with a high content of PEG for thermal energy storage.

引用

页码：3341 / 3347

页数：7

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