HUSCAP logo Hokkaido Univ. logo

Hokkaido University Collection of Scholarly and Academic Papers >
Graduate School of Engineering / Faculty of Engineering >
Peer-reviewed Journal Articles, etc >

Vertically aligned carbon fibers as supporting scaffolds for phase change composites with anisotropic thermal conductivity and good shape stability

Files in This Item:
Manu-final.pdf1.19 MBPDFView/Open
Please use this identifier to cite or link to this item:http://hdl.handle.net/2115/76869

Title: Vertically aligned carbon fibers as supporting scaffolds for phase change composites with anisotropic thermal conductivity and good shape stability
Authors: Sheng, Nan Browse this author
Zhu, Ruijie Browse this author
Dong, Kaixin Browse this author
Nomura, Takahiro Browse this author
Zhu, Chunyu Browse this author →KAKEN DB
Aoki, Yoshitaka Browse this author →KAKEN DB
Habazaki, Hiroki Browse this author →KAKEN DB
Akiyama, Tomohiro Browse this author →KAKEN DB
Issue Date: 7-Mar-2019
Publisher: Royal Society of Chemistry
Journal Title: Journal of Materials Chemistry A
Volume: 7
Issue: 9
Start Page: 4934
End Page: 4940
Publisher DOI: 10.1039/c8ta11329g
Abstract: The wide application of organic phase change materials for thermal energy storage and management is limited by their low thermal conductivity and poor shape stability. In this work, anisotropic thermally conductive and shape-stabilized phase change composites (PCCs) were successfully prepared with vertically aligned carbon fibers as supporting scaffolds. The aligned and hollow carbon fiber scaffolds with different densities were facilely fabricated by the direct carbonization of rolled cotton sheets with aligned and hollow cellulose fibers. PCCs were obtained by vacuum impregnation of paraffin wax. Because of the interconnected hollow carbon fiber frameworks with vertically aligned fibers and high porosity, PCCs present enhanced anisotropic thermal conductivity and good shape stability against leakage. The thermal conductivity in the axial direction along the fibers is higher than that in the lateral direction, since the aligned fiber scaffolds act as the thermal conduction pathway. The thermal conductivity of a PCC with a carbon ratio of 8.8 wt% is 0.77 W K-1 m(-1) (>3 times that of pure paraffin) in the axial direction, while the value in the lateral direction is 0.58 W K-1 m(-1). This work provides a novel strategy for designing anisotropic thermally conductive and shape-stabilized PCCs with potential applications in advanced thermal management and storage.
Type: article (author version)
URI: http://hdl.handle.net/2115/76869
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 朱 春宇

Export metadata:

OAI-PMH ( junii2 , jpcoar )

MathJax is now OFF:


 

 - Hokkaido University