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A dual mesopore c-aerogel electrode for a high energy density supercapacitor

Park, Dong Won and Cañas, Natalia A. and Schwan, Marina and Milow, Barbara and Ratke, Lorenz and Friedrich, Andreas (2016) A dual mesopore c-aerogel electrode for a high energy density supercapacitor. Current Applied Physics, 16, pp. 658-664. Elsevier. ISSN 1567-1739

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Abstract

Energy and power-storage capability of supercapacitors are associated with the physical and chemical characteristics of carbon-based electrodes. Herein, we report the structural characteristics and electrochemical performance of carbon aerogels (C-aerogels) prepared via a simple sol-gel method without any activation process. The synthesized C-aerogel possesses a 3-D interconnected network structure, and was tested as the active electrode material in a symmetrical supercapacitor with an organic electrolyte. Cyclic voltammetry and galvanostatic charge/discharge measurements demonstrate the good electrochemical performance of the supercapacitor. A specific capacitance of 21.8 F$g�1 at 2 A$g�1 and cycle durability of 87% over 10,000 cycles was observed due to the presence of dual mesopores. These dual mesopores result in an enhanced access to reaction sites and facilitate electrolyte ion transport. Furthermore, they can afford a high energy density of 22.1 Wh kg�1 at a power density of 2.4 kW$kg�1.

Item URL in elib:https://elib.dlr.de/104373/
Document Type:Article
Title:A dual mesopore c-aerogel electrode for a high energy density supercapacitor
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Park, Dong WonDong-Won.Park (at) dlr.deUNSPECIFIED
Cañas, Natalia A.natalia.canas (at) dlr.deUNSPECIFIED
Schwan, Marinamarina.schwan (at) dlr.deUNSPECIFIED
Milow, BarbaraBarbara.Milow (at) dlr.deUNSPECIFIED
Ratke, Lorenzlorenz.ratke (at) dlr.deUNSPECIFIED
Friedrich, Andreasandreas.friedrich (at) dlr.deUNSPECIFIED
Date:2016
Journal or Publication Title:Current Applied Physics
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:16
Page Range:pp. 658-664
Publisher:Elsevier
ISSN:1567-1739
Status:Published
Keywords:Carbon aerogel, Dual mesopore, Supercapacitor, Energy storage
HGF - Research field:Energy
HGF - Program:Storage and Cross-linked Infrastructures
HGF - Program Themes:Electrochemical Energy Storage
DLR - Research area:Energy
DLR - Program:E EV - Energy process technology
DLR - Research theme (Project):E - Electrochemical Processes (Batteries) (old), V - NGC Fahrzeugstruktur (old)
Location: Köln-Porz
Institutes and Institutions:Institute of Materials Research > Aerogele
Institute of Engineering Thermodynamics > Electrochemical Energy Technology
Deposited By: Milow, Dr. Barbara
Deposited On:12 Oct 2016 08:31
Last Modified:30 May 2019 22:07

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