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Jeong, Hoon Eui
Multiscale Biomimetics & Manufacturing Lab
Research Interests
  • Biomimetics

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Bimetallic copper cobalt selenide nanowire-anchored woven carbon fiber-based structural supercapacitors

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Title
Bimetallic copper cobalt selenide nanowire-anchored woven carbon fiber-based structural supercapacitors
Author
Deka, Biplab K.Hazarika, AnkitaKim, JisooKim, NamhunJeong, Hoon EuiPark, Young-BinPark, Hyung Wook
Issue Date
2019-01
Publisher
ELSEVIER SCIENCE SA
Citation
CHEMICAL ENGINEERING JOURNAL, v.355, no.1, pp.551 - 559
Abstract
Structural supercapacitors provide a variety of opportunities for woven carbon fibers in portable electronics, hybrid automobiles and aerospace applications. We describe herein the synthesis of bimetallic Cu-Co selenide nanowires based on woven carbon fibers, and their use as electrodes in supercapacitors. Woven Kevlar fiber is used as separator for the electrodes and a polyester resin with an ionic liquid and lithium salt is used as solid polymer electrolyte. The supercapacitors exhibit efficient energy storage and significant enhancements in mechanical strength (89.38%) and modulus (70.41%) over those of bare woven carbon fiber base supercapacitors. The specific capacitance of these supercapacitors increases from 0.197 F g(-1) to 28.63 F g(-1) after the growth of nanowires, with accordingly high energy density (191.64 mW h kg(-1)) and power density (36.65 W kg(-1)). In situ mechano-electrochemical tests of these supercapacitors yield excellent capacitance retention (77.3%) at the mechanical failure point (481.29 MPa).
URI
https://scholarworks.unist.ac.kr/handle/201301/24940
URL
https://www.sciencedirect.com/science/article/pii/S1385894718316462?via%3Dihub
DOI
10.1016/j.cej.2018.08.172
ISSN
1385-8947
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