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Gold/ultra‐high molecular weight polyethylene nanocomposites for electrical energy storage: Enhanced recovery efficiency upon uniaxial deformation
journal contribution
posted on 2021-06-07, 10:28 authored 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 RoncaThe 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
Find out more...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 ScienceVolume
138Issue
42Publisher
WileyVersion
- VoR (Version of Record)
Rights holder
© The authorsPublisher 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
2021-05-23Publication date
2021-06-02Copyright date
2021ISSN
0021-8995eISSN
1097-4628Publisher version
Language
- en
Depositor
Dr Gianfranco Claudio. Deposit date: 4 June 2021Article number
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