Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10131031 | Chemical Engineering Journal | 2019 | 31 Pages |
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 0.197â¯Fâ¯gâ1 to 28.63â¯Fâ¯gâ1 after the growth of nanowires, with accordingly high energy density (191.64 mW h kgâ1) and power density (36.65â¯Wâ¯kgâ1). In situ mechano-electrochemical tests of these supercapacitors yield excellent capacitance retention (77.3%) at the mechanical failure point (481.29â¯MPa).
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Chemical Engineering (General)
Authors
Biplab K. Deka, Ankita Hazarika, Jisoo Kim, Namhun Kim, Hoon Eui Jeong, Young-Bin Park, Hyung Wook Park,