A novel medium-temperature form-stable phase change material based on dicarboxylic acid eutectic mixture/expanded graphite composites

被引：54

作者：

Liu, Shang ^{[1
,2
]}

Han, Lipeng ^{[1
,2
]}

Xie, Shaolei ^{[1
]}

Jia, Yongzhong ^{[1
]}

Sun, Jinhe ^{[1
]}

Jing, Yan ^{[1
]}

Zhang, Quanyou ^{[1
]}

机构：

[1] Chinese Acad Sci, Qinghai Inst Salt Lakes, Key Lab Comprehens & Highly Efficient Utilizat Sa, Xining 810008, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

来源：

SOLAR ENERGY | 2017年 / 143卷

基金：

中国国家自然科学基金;

关键词：

Succinic acid; Stability; Reliability; Corrosion; THERMAL-ENERGY STORAGE; THERMOPHYSICAL PROPERTIES; EXPANDED GRAPHITE; HEAT-TRANSFER; CONDUCTIVITY; SHELL;

D O I：

10.1016/j.solener.2016.12.027

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

Low stability, reliability, and corrosion are considerable challenges to widespread application of succinic acid (SA) as phase change material (PCM). Here, we present a novel medium-temperature form-stable phase change material (FSPCM) aiming to eliminate these obstacles. In this study, FSPCM was fabricated by adsorbing eutectics of adipic acid (AA) and SA into expanded graphite (EG). The molar ratio of AA and SA in eutectics was determined to be 7:3, and the optimal mass ratio of EG in FSPCM is ca. 0.1. The composite was characterized by diffraction scanning calorimetry, scanning electron microscopy, Fourier transform infrared spectrometer, X-ray diffractometer, and thermal gravimetric analyzer. The results showed that the FSPCM melts at ca. 135 degrees C with latent heat storage of 206 J/g. No notable change of thermal behavior in FSPCM was observed after experienced 100 accelerated cycle test. Compared to SA, both the stability and reliability were promoted in FSPCM. Besides, the leakage of dicarboxylic acid was prevented, thus the corrosion was alleviated. It is envisioned that the as-prepared FSPCM have considerable potential in medium-temperature latent heat storage. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：22 / 30

页数：9

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