Hierarchical porous hollow carbon spheres derived from spirofluorene- and aniline-linked conjugated microporous polymer for phase change energy storage

被引：53
作者：
Yan, Chunna [1 ]
Meng, Nan [2 ]
Lyu, Wei [2 ]
Li, Yuchao [1 ]
Wang, Liping [1 ]
Liao, Yaozu [1 ,2 ]
机构：
[1] Liaocheng Univ, Sch Mat Sci & Engn, Liaocheng 252059, Shandong, Peoples R China
[2] Donghua Univ, Coll Mat Sci & Engn, State Key Lab Modificat Chem Fibers & Polymer Mat, Shanghai 201620, Peoples R China
来源：
CARBON | 2021年 / 176卷
基金：
中国国家自然科学基金;
关键词：
Phase change material; Conjugated microporous polymer; Hierarchical porous carbon sphere; Thermal energy storage; THERMAL-CONDUCTIVITY ENHANCEMENT; GRAPHITE; PCMS; COMPOSITES; NANOTUBES; EFFICIENT; ACID; FOAM;
D O I：
10.1016/j.carbon.2020.12.035
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Thermal energy storage with phase change materials (PCMs) offers a high thermal storage density for energy saving and management in greenhouses. However, the leakage of PCMs during the phase change process hinders their applications. Herein, to tackle this problem, PCM material of 1-octadecanol (ODA) was encapsulated in hierarchical porous carbon spheres (HCSPs) derived from a spirofluorene- and aniline-linked conjugated microporous polymer (SACMP) with a high specific surface area of 476.1 m(2)/g. The HCSPs showed an optimal heating rate of 0.14 degrees C/s, which was comparable to the charging rate of pure ODA, signifying a great potential for the thermal energy storage. The obtained HCSP/ODA composites had a high package of ODA (up to 80 wt%) and excellent shape stability without the leakage of ODA. The optimized HCSP/ODA composites show a high phase change enthalpy (184.4 J/g) and good thermal cycling stability (169.5 J/g after 50 heating/cooling cycles), indicating a great potential for the stable thermal energy storage. (C) 2020 Elsevier Ltd. All rights reserved.
引用
收藏
页码：178 / 187
页数：10
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