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Highly porous carbon aerogels for electrochemical applications

Schwan, Marina and Kröner, Jessica and Schonvogel, Dana and Nojabaee, Maryam and Milow, Barbara (2023) Highly porous carbon aerogels for electrochemical applications. 9th International Conference on CARBON FOR ENERGY STORAGE AND ENVIRONMENT PROTECTION, 2023-09-24 - 2023-09-28, Budapest, Ungarn.

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Carbon aerogels are highly-porous, electrically conductive materials with tunable micro- and mesoporosity as well as surface area and surface modification. Their properties are dictated from sol-gel process of their organic precursors and carbonization conditions. Due to their well adjustable structural properties and high electrical conductivity, they became very attractive in many fields of electrochemical applications. Energy and power-storage capability of supercapacitors are associated with the physical and chemical characteristics of carbon-based electrodes. 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. Ultramicroporous (pores smaller 1 nm) carbon aerogels as conductive matrices embedding sulfur for cathode application in lithium–sulfur batteries are able to suppress the polysulfide shuttle effect, maintaining 80% (about 1000 mA·h·g(S)−1) and 70% (about 800 mA·h·g(S)−1) of the initial discharge capacity after 200 cycles at a rate of 0.3C in carbonate and ether-based electrolytes, respectively. The mesoporous carbon aerogels can be considered as promising cathode catalysts for application in polymer electrolyte membrane fuel cells. The platinum free carbon aerogels contain catalytic active Fe-Nx sites and demonstrate suitable microstructure for enhanced electrocatalytic performance. Carbon aerogels with different structural (specific surface area, pore volume and pore sizes), chemical (chemical structure) and physical (density, electrical conductivity, mechanical properties) properties applied for several electrochemical applications will be presented on the conference.

Item URL in elib:https://elib.dlr.de/197656/
Document Type:Conference or Workshop Item (Speech)
Title:Highly porous carbon aerogels for electrochemical applications
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Schwan, MarinaUNSPECIFIEDhttps://orcid.org/0000-0001-6329-8164UNSPECIFIED
Schonvogel, DanaUNSPECIFIEDhttps://orcid.org/0000-0002-2485-740XUNSPECIFIED
Nojabaee, MaryamUNSPECIFIEDhttps://orcid.org/0000-0001-5225-3526UNSPECIFIED
Milow, BarbaraUNSPECIFIEDhttps://orcid.org/0000-0002-6350-7728UNSPECIFIED
Date:29 September 2023
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:carbon material, aerogels, supercapacitors, electrode material
Event Location:Budapest, Ungarn
Event Type:international Conference
Event Start Date:24 September 2023
Event End Date:28 September 2023
HGF - Research field:Energy
HGF - Program:Materials and Technologies for the Energy Transition
HGF - Program Themes:Electrochemical Energy Storage
DLR - Research area:Energy
DLR - Program:E VS - Combustion Systems
DLR - Research theme (Project):E - Materials for Electrochemical Energy Storage
Location: Köln-Porz
Institutes and Institutions:Institute of Materials Research > Aerogels and Aerogel Composites
Institute of Engineering Thermodynamics > Electrochemical Energy Technology
Deposited By: Schwan, Marina
Deposited On:18 Oct 2023 11:24
Last Modified:24 Apr 2024 20:57

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