Publications논문

Shape-engineerable composite fibers and their supercapacitor application
2016-10-24 18:03:03 조회수978
Kang Min Kim(a), Jae Ah Lee(a),(b), Hyeon Jun Sim(a), Kyung-Ah Kim(c)*, Rouhollah Jalili(d), Geoffrey M. Spinks(d) and Seon Jeong Kim(a)* a) Center for Self-powered Actuation and Department of Biomedical Engineering, Hanyang University, Seoul 04763, South Korea. E-mail: sjk@hanyang.ac.kr b) The Alan G. MacDiarmid NanoTech Institute, University of Texas at Dallas, Richardson, TX. 75083, USA c) Dept. of Biomedical Engineering, School of Medicine, Chungbuk National University, Cheongju 28644, Korea. E-mail: kimka@chungbuk.ac.kr d) Intelligent Polymer Research Institute, ARC Centre of Excellence for Electromaterials Science, University of Wollongong, Wollongong, NSW 2522, Australia 원문 링크 : https://www.ncbi.nlm.nih.gov/pubmed/26754398

Abstract

Due to excellent electrical and mechanical properties of carbon nano materials, it is of great interest to fabricate flexible, high conductive, and shape engineered carbon based fibers. As part of these approaches, hollow, twist, ribbon, and other various shapes of carbon based fibers have been researched for various functionality and application. In this paper, we suggest simple and effective method to control the fiber shape. We fabricate the three different shapes of hollow, twisted, and ribbon shaped fibers from wet spun giant graphene oxide (GGO)/single walled-nanotubes (SWNTs)/ poly(vinyl alcohol) (PVA) gels. Each shaped fibers exhibit different mechanical properties. The average specific strengthes of the hollow, twist, and ribbon fibers presented here are 126.5, 106.9, and 38.0 MPa while strain are 9.3, 13.5, and 5%, respectively. Especially, the ribbon fiber shows high electrical conductivity (524 ± 64 S cm−1) and areal capacitance (2.38 mF cm−2). 

 
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