Single-step rapid synthesis of monolithic mesoporous carbon/graphene aerogels with improved double layer capacitance

Resorcinol (R)–formaldehyde (F) aerogels are a class of organic aerogels pursued for their conversion to carbon aerogels upon pyrolysis at higher temperatures under an inert atmosphere. RF aerogels can be prepared by either acid or base catalysed condensation of resorcinol and formaldehyde via elect...

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Bibliographic Details
Published in:New journal of chemistry 2018, Vol.42 (9), p.7371-7376
Main Authors: Chandrasekaran, Naveen, Premkumar, Viji, Senthil Kumar, Sakkarapalayam Murugesan, Ram, Rahul
Format: Article
Language:English
Subjects:
Aerogels
Capacitance
Carbon
Computer networks
Electrical resistivity
Formaldehyde
Gelation
Gels
Graphene
Inert atmospheres
Pyrolysis
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Summary:Resorcinol (R)–formaldehyde (F) aerogels are a class of organic aerogels pursued for their conversion to carbon aerogels upon pyrolysis at higher temperatures under an inert atmosphere. RF aerogels can be prepared by either acid or base catalysed condensation of resorcinol and formaldehyde via electrophilic aromatic substitution. Recently, RF was used as an interconnect between graphene sheets to form three-dimensional assemblies of graphene aerogels. In this study, we have demonstrated a novel and facile approach to the gelation of an RF network by taking into account the possibility of deprotonation of oxygen functionalities present in graphene oxide (GO). The as-prepared RF/GO gels were carbonized to obtain mesoporous carbon (MC)/graphene (G) aerogels (MCGAs), which exhibit high specific surface area, increased electrical conductivity and specific capacitance on a par with reported graphene aerogels prepared by other synthetic routes.
ISSN:1144-0546
1369-9261
DOI:10.1039/C7NJ05077A