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Carbon Soot/n–carboxylic Acids Composites As Form‐stable Phase Change Materials For Thermal Energy Storage
Author(s) -
Wang Chengjun,
Liang Weidong,
Chen Pinsong,
An Junru,
Zhu Zhaoqi,
Sun Hanxue,
Li An
Publication year - 2019
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201901522
Subject(s) - materials science , composite material , thermogravimetry , composite number , thermal stability , mass fraction , thermal energy storage , thermal conductivity , soot , agglomerate , chemical engineering , chemistry , organic chemistry , combustion , thermodynamics , physics , engineering
Spongy carbon soot (s‐CS) was prepared and used as novel host material of the form‐stable composite phase change materials (PCMs). The s‐CS was constructed by the interconnected and compact large agglomerates of the soot particles with an average size of 25–60 nm. The average pore diameter of the s‐CS was measured to be 15.3 nm. Owing to capillary forces of s‐CS, n‐carboxylic acids can be easily absorbed into the pores and stay stable without leakage. The PCMs/s‐CS composite present a high heat storage capacity between 83.42 J g −1 and 99.63 J g −1 , corresponding to the mass fraction of n‐carboxylic acids between 50.10% and 53.20%. The effects of the supporting material on thermal stability and thermal conductivity of composites were investigated by means of thermogravimetry and flash thermal conductivity testing. The PCM/spongy CS composites exhibit excellent thermal stability and durability, and may have great potential for renewable energy saving applications.