Deakin University

File(s) under permanent embargo

High-performance multifunctional Graphene yarns: Toward wearable all-carbon energy storage textiles

journal contribution
posted on 2014-03-25, 00:00 authored by S H Aboutalebi, R Jalili, D Esrafilzadeh, M Salari, Z Gholamvand, S Aminorroaya Yamini, K Konstantinov, R L Shepherd, J Chen, S E Moulton, P C Innis, A I Minett, Joselito RazalJoselito Razal, G G Wallace
The successful commercialization of smart wearable garments is hindered by the lack of fully integrated carbon-based energy storage devices into smart wearables. Since electrodes are the active components that determine the performance of energy storage systems, it is important to rationally design and engineer hierarchical architectures atboth the nano- and macroscale that can enjoy all of the necessary requirements for a perfect electrode. Here we demonstrate a large-scale flexible fabrication of highly porous high-performance multifunctional graphene oxide (GO) and rGO fibers and yarns by taking advantage of the intrinsic soft self-assembly behavior of ultralarge graphene oxide liquid crystalline dispersions. The produced yarns, which are the only practical form of these architectures for real-life device applications, were found to be mechanically robust (Young's modulus in excess of 29 GPa) and exhibited high native electrical conductivity (2508 ± 632 S m -1) and exceptionally high specific surface area (2605 m2 g-1 before reduction and 2210 m2 g-1 after reduction). Furthermore, the highly porous nature of these architectures enabled us to translate the superior electrochemical properties of individual graphene sheets into practical everyday use devices with complex geometrical architectures. The as-prepared final architectures exhibited an open network structure with a continuous ion transport network, resulting in unrivaled charge storage capacity (409 F g-1 at 1 A g-1) and rate capability (56 F g-1 at 100 A g-1) while maintaining their strong flexible nature. © 2014 American Chemical Society.



ACS Nano






2456 - 2466





Publication classification

C Journal article; C1.1 Refereed article in a scholarly journal

Copyright notice

2014, American Chemical Society