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

By Biplab K. Deka, Ankita Hazarika, Jisoo Kim, Namhun Kim, Hoon Eui Jeong, Young‐Bin Park, H. Park. Chemical Engineering Journal, 2019

150 citations recorded by the source corpus.

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).

Subfields: Electrical and Electronic Engineering, Electronic, Optical and Magnetic Materials

View Paper: https://www.semanticscholar.org/paper/3945396aeb6e7d95b4fb06e138dbd0ab8209482d