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Gold/ultra‐high molecular weight polyethylene nanocomposites for electrical energy storage: Enhanced recovery efficiency upon uniaxial deformation

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journal contribution
posted on 07.06.2021, 10:28 by Stavros Drakopoulos, Georgia C Manika, Aurora Nogales, Taeyong Kim, Andrew B Robbins, Gianfranco ClaudioGianfranco Claudio, Austin J Minnich, Tiberio A Ezquerra, Georgios C Psarras, Nacho Martin-Fabiani-CarratoNacho Martin-Fabiani-Carrato, Sara Ronca
The growing demand for renewable energy sources has prompted the development of dielectric materials with the ability to store and efficiently recover electrical energy. Here, we correlate the structure and thermal conductivity of uniaxially oriented disentangled ultra-high molecular weight polyethylene (dis-UHMWPE) composites reinforced with gold nanoparticles with their electrical properties and potential application as electrical energy storage devices. Stretching increases the orientation of the polymer chains and thus the crystallinity and reduces the aggregation of gold nanoparticles while the thermal conductivity enhances significantly along the orientation axis. The structural changes driven by stretching result in two competing effects; on the one hand, the crystallinity increase reduces the permittivity of the composites and increases the resistivity, while on the other hand the recovery efficiency of oriented materials excels that of unstretched samples by up to 6 times at 5 s. Therefore, our work shows the structure–property relationship in electrical energy storage materials

Funding

Thermal conduction in an electrical insulating polymer

Engineering and Physical Sciences Research Council

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History

School

  • Aeronautical, Automotive, Chemical and Materials Engineering
  • Mechanical, Electrical and Manufacturing Engineering

Department

  • Materials

Research Unit

  • Centre for Renewable Energy Systems Technology (CREST)

Published in

Journal of Applied Polymer Science

Volume

138

Issue

42

Publisher

Wiley

Version

VoR (Version of Record)

Rights holder

© The authors

Publisher statement

This is an Open Access Article. It is published by Wiley under the Creative Commons Attribution 4.0 Unported Licence (CC BY). Full details of this licence are available at: http://creativecommons.org/licenses/by/4.0/

Acceptance date

23/05/2021

Publication date

2021-06-02

Copyright date

2021

ISSN

0021-8995

eISSN

1097-4628

Language

en

Depositor

Dr Gianfranco Claudio. Deposit date: 4 June 2021

Article number

51232