The University of Southampton
University of Southampton Institutional Repository

Understanding the charge storage mechanism of conductive polymers as hybrid battery-capacitor material in ionic liquids by in-situ atomic force microscopy and electrochemical quartz crystal microbalance

Understanding the charge storage mechanism of conductive polymers as hybrid battery-capacitor material in ionic liquids by in-situ atomic force microscopy and electrochemical quartz crystal microbalance
Understanding the charge storage mechanism of conductive polymers as hybrid battery-capacitor material in ionic liquids by in-situ atomic force microscopy and electrochemical quartz crystal microbalance
Safe and sustainable energy storage systems with the ability to perform efficiently during large number of charge/discharge cycles with minimum degradation, define the main objectives of the near future energy storage technologies. Closing the gap between high power and energy per unit weight, demands new materials acting as battery and capacitor at the same time. Conductive polymers attracted attention as hybrid battery-capacitor material. However, their potential impact has not been fully investigated, as their behaviour, especially in non-aqueous electrolytes such as ionic liquids, is not completely understood. Here, we aim to clarify the fundamental functionality of the hybrid characteristics while studying the interaction between a conductive polymer and an ionic liquid by in-situ atomic force microscopy and electrochemical quartz crystal microbalance. The main achievement is the visualisation of morphological modifications of the conductive polymer depending on the state of charge. These modifications influence the viscoelastic material properties of the polymer, significantly. The combination of the findings provides a model, which is able to explain why conductive polymers behave like a (pseudo)-capacitor at a high and as battery at a low state of charge. This understanding enables the application-orientated synthesis and the use of conductive polymers as high-performance energy storage material.
Conductive polymers, electrochemical quartz crystal microbalance (EQCM), hybrid battery-(pseudo)-capacitor, in-situ atomic force microscopy (AFM), ionic liquids, poly(3,4-ethylenedioxythiophene) (PEDOT)
2050-7488
Schoetz, Theresa
cf930a0a-087e-4be0-ac2b-614abcc3f424
Kurniawan, Mario
45c511fb-7050-418b-b3a3-0a36cd5c37e2
Stich, Michael
dab8d5ba-7d62-489a-a583-da2898c2ac7d
Peipmann, Ralf
cfe44c5c-b6e8-4754-bb8e-8b8a5b4c10ec
Efimov, Igor
f6725be6-c62a-41a8-bd4e-d86b9ad10653
Ispas, Adriana
bc1781ef-711f-4dda-a24f-2269b1fbfa36
Bund, Andreas
138beee1-3117-40cf-a27d-7db197b1e1e8
Ponce De Leon Albarran, Carlos
508a312e-75ff-4bcb-9151-dacc424d755c
Ueda, Mikito
88372229-ca73-42cd-bbdf-9986744ece06
Schoetz, Theresa
cf930a0a-087e-4be0-ac2b-614abcc3f424
Kurniawan, Mario
45c511fb-7050-418b-b3a3-0a36cd5c37e2
Stich, Michael
dab8d5ba-7d62-489a-a583-da2898c2ac7d
Peipmann, Ralf
cfe44c5c-b6e8-4754-bb8e-8b8a5b4c10ec
Efimov, Igor
f6725be6-c62a-41a8-bd4e-d86b9ad10653
Ispas, Adriana
bc1781ef-711f-4dda-a24f-2269b1fbfa36
Bund, Andreas
138beee1-3117-40cf-a27d-7db197b1e1e8
Ponce De Leon Albarran, Carlos
508a312e-75ff-4bcb-9151-dacc424d755c
Ueda, Mikito
88372229-ca73-42cd-bbdf-9986744ece06

Schoetz, Theresa, Kurniawan, Mario, Stich, Michael, Peipmann, Ralf, Efimov, Igor, Ispas, Adriana, Bund, Andreas, Ponce De Leon Albarran, Carlos and Ueda, Mikito (2018) Understanding the charge storage mechanism of conductive polymers as hybrid battery-capacitor material in ionic liquids by in-situ atomic force microscopy and electrochemical quartz crystal microbalance. Journal of Materials Chemistry A. (doi:10.1039/C8TA06757K).

Record type: Article

Abstract

Safe and sustainable energy storage systems with the ability to perform efficiently during large number of charge/discharge cycles with minimum degradation, define the main objectives of the near future energy storage technologies. Closing the gap between high power and energy per unit weight, demands new materials acting as battery and capacitor at the same time. Conductive polymers attracted attention as hybrid battery-capacitor material. However, their potential impact has not been fully investigated, as their behaviour, especially in non-aqueous electrolytes such as ionic liquids, is not completely understood. Here, we aim to clarify the fundamental functionality of the hybrid characteristics while studying the interaction between a conductive polymer and an ionic liquid by in-situ atomic force microscopy and electrochemical quartz crystal microbalance. The main achievement is the visualisation of morphological modifications of the conductive polymer depending on the state of charge. These modifications influence the viscoelastic material properties of the polymer, significantly. The combination of the findings provides a model, which is able to explain why conductive polymers behave like a (pseudo)-capacitor at a high and as battery at a low state of charge. This understanding enables the application-orientated synthesis and the use of conductive polymers as high-performance energy storage material.

Text
Acepted Manuscript - Accepted Manuscript
Download (3MB)

More information

Accepted/In Press date: 21 August 2018
e-pub ahead of print date: 23 August 2018
Keywords: Conductive polymers, electrochemical quartz crystal microbalance (EQCM), hybrid battery-(pseudo)-capacitor, in-situ atomic force microscopy (AFM), ionic liquids, poly(3,4-ethylenedioxythiophene) (PEDOT)

Identifiers

Local EPrints ID: 423840
URI: http://eprints.soton.ac.uk/id/eprint/423840
ISSN: 2050-7488
PURE UUID: 0f57b498-b4a7-4aec-9a5f-963a35fe8901
ORCID for Carlos Ponce De Leon Albarran: ORCID iD orcid.org/0000-0002-1907-5913

Catalogue record

Date deposited: 02 Oct 2018 16:30
Last modified: 17 Dec 2019 05:14

Export record

Altmetrics

Contributors

Author: Theresa Schoetz
Author: Mario Kurniawan
Author: Michael Stich
Author: Ralf Peipmann
Author: Igor Efimov
Author: Adriana Ispas
Author: Andreas Bund
Author: Mikito Ueda

University divisions

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×