Journal article
Noncovalent Functionalization of Quinone Derivatives on 2D Graphene for High Performance Pseudocapacitive Electrodes
Meeting abstracts (Electrochemical Society), v MA2016-02(53), pp 4078-4078
01 Sep 2016
Abstract
Redox-active organic materials have recently gained significant attention from small to large scale energy storage systems due to their natural abundance and sustainability.
1,2
However, they degrade upon moderate cycling mainly due to their poor conductivity, which limits their usage. One option to tackle this issue is to deposit organic materials on conductive carbons. Herein, we report 3D interconnected xerogel composed of 2,5-dimethoxy-1,4-benzoquinone (DMQ) decorated on reduced graphene oxide sheets (DMQ@rGO), via one-step hydrothermal method. The DMQ performed dual role in the composite: 1) it provided high redox capacitance and 2) served as a spacer to mitigate rGO sheet aggregation. When binder-free optimized composition of DMQ@rGO was tested as a pseudocapacitive electrode, it showed high capacitance (650 F/g, 780 F/cm
3
at 5 mV/s) and excellent capacitance retention of 99% after 25000 cycles at 50 mV/s in 1 M H
2
SO
4
. Furthermore, we used density functional theory calculations to explore the charge storage mechanism, binding energies, adsorption orientation of the molecules, charge redistribution and density of the states.
References:
1 B. Huskinson, M. P. Marshak, C. Suh, S. Er, M. R. Gerhardt, C. J. Galvin, X. Chen, A. Aspuru-Guzik, R. G. Gordon and M. J. Aziz,
Nature
, 2014,
505
, 195–8.
2 M. Boota, B. Anasori, C. Voigt, M.-Q. Zhao, M. W. Barsoum and Y. Gogotsi,
Adv. Mater.
, 2015,
28
, 1517–22.
Metrics
14 Record Views
Details
- Title
- Noncovalent Functionalization of Quinone Derivatives on 2D Graphene for High Performance Pseudocapacitive Electrodes
- Creators
- Muhammad Boota - Drexel UniversityChi Chen - Huazhong University of Science and TechnologyMatthieu Bécuwe - Laboratoire de Réactivité et Chimie des SolidesLing Miao - #N##N#bHuazhong University of Science and TechnologyYury Gogotsi - Drexel University
- Publication Details
- Meeting abstracts (Electrochemical Society), v MA2016-02(53), pp 4078-4078
- Publisher
- Institute of Physics (IOP)
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Other Identifier
- 991019186800504721