Details
Original language | English |
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Article number | 1701430 |
Journal | Advanced materials interfaces |
Volume | 5 |
Issue number | 8 |
Publication status | Published - 23 Apr 2018 |
Abstract
An ideal material for the storage of electrical energy is characterized by high specific energy and high specific power at the same time, which is a task of enormous difficulty. The so-called redox flow battery is a highly promising approach. This new energy storage technology is based on two half-cells containing dissolved electrochemically active species. Compared to conventional, static accumulators it is not only engineered in a unique way but also needs a tailor-made basis of chemical materials. Therefore, many different redox-active materials are being investigated. However, research is focused mainly on the redox properties, not taking possible synergistic effects arising from self-assembled structures into account. Here, a novel surfactant is presented containing an electroactive polyoxometalate (POM) head connected to anthraquinone (AQ) as the relevant electron reservoir via a π-conjugated chain. When organized into micelles, electrons put on the POM corona “slide” into their depot inside the micellar core until needed. Cyclic voltammetry proves the high reversibility and stability of this system, which therefore can be regarded as micellar energy storage.
Keywords
- energy storage, hybrid material, polyoxometalate, self-assembly, surfactants
ASJC Scopus subject areas
- Engineering(all)
- Mechanics of Materials
- Engineering(all)
- Mechanical Engineering
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In: Advanced materials interfaces, Vol. 5, No. 8, 1701430, 23.04.2018.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Electron Transfer in Self-Assembled Micelles Built by Conductive Polyoxometalate-Surfactants Showing Battery-Like Behavior
AU - Klaiber, Alexander
AU - Kollek, Tom
AU - Cardinal, Simon
AU - Hug, Nicolas
AU - Drechsler, Markus
AU - Polarz, Sebastian
N1 - Funding Information: The authors thank Prof. R. Winter, Dr. M. Linseis, and N. Rotthowe (University of Konstanz) for assistance with the electrochemical measurements. The authors also thank the Particle Analysis Center of SFB1214 at the University of Konstanz for additional measurements. The current research was funded by an ERC consolidator grant (I-SURF; project 614606). Publisher Copyright: © 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim Copyright: Copyright 2018 Elsevier B.V., All rights reserved.
PY - 2018/4/23
Y1 - 2018/4/23
N2 - An ideal material for the storage of electrical energy is characterized by high specific energy and high specific power at the same time, which is a task of enormous difficulty. The so-called redox flow battery is a highly promising approach. This new energy storage technology is based on two half-cells containing dissolved electrochemically active species. Compared to conventional, static accumulators it is not only engineered in a unique way but also needs a tailor-made basis of chemical materials. Therefore, many different redox-active materials are being investigated. However, research is focused mainly on the redox properties, not taking possible synergistic effects arising from self-assembled structures into account. Here, a novel surfactant is presented containing an electroactive polyoxometalate (POM) head connected to anthraquinone (AQ) as the relevant electron reservoir via a π-conjugated chain. When organized into micelles, electrons put on the POM corona “slide” into their depot inside the micellar core until needed. Cyclic voltammetry proves the high reversibility and stability of this system, which therefore can be regarded as micellar energy storage.
AB - An ideal material for the storage of electrical energy is characterized by high specific energy and high specific power at the same time, which is a task of enormous difficulty. The so-called redox flow battery is a highly promising approach. This new energy storage technology is based on two half-cells containing dissolved electrochemically active species. Compared to conventional, static accumulators it is not only engineered in a unique way but also needs a tailor-made basis of chemical materials. Therefore, many different redox-active materials are being investigated. However, research is focused mainly on the redox properties, not taking possible synergistic effects arising from self-assembled structures into account. Here, a novel surfactant is presented containing an electroactive polyoxometalate (POM) head connected to anthraquinone (AQ) as the relevant electron reservoir via a π-conjugated chain. When organized into micelles, electrons put on the POM corona “slide” into their depot inside the micellar core until needed. Cyclic voltammetry proves the high reversibility and stability of this system, which therefore can be regarded as micellar energy storage.
KW - energy storage
KW - hybrid material
KW - polyoxometalate
KW - self-assembly
KW - surfactants
UR - http://www.scopus.com/inward/record.url?scp=85041675444&partnerID=8YFLogxK
U2 - 10.1002/admi.201701430
DO - 10.1002/admi.201701430
M3 - Article
VL - 5
JO - Advanced materials interfaces
JF - Advanced materials interfaces
SN - 2196-7350
IS - 8
M1 - 1701430
ER -