High-Performance Supercapacitors Based on a Zwitterionic Network of Covalently Functionalized Graphene with Iron Tetraaminophthalocyanine
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F18%3A73587861" target="_blank" >RIV/61989592:15310/18:73587861 - isvavai.cz</a>
Result on the web
<a href="https://onlinelibrary.wiley.com/doi/epdf/10.1002/adfm.201801111" target="_blank" >https://onlinelibrary.wiley.com/doi/epdf/10.1002/adfm.201801111</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1002/adfm.201801111" target="_blank" >10.1002/adfm.201801111</a>
Alternative languages
Result language
angličtina
Original language name
High-Performance Supercapacitors Based on a Zwitterionic Network of Covalently Functionalized Graphene with Iron Tetraaminophthalocyanine
Original language description
Graphene derivatives are promising candidates as electrode materials in supercapacitor cells, therefore, functionalization strategies are pursued to improve their performance. A scalable approach is reported for preparing a covalently and homogenously functionalized graphene with iron tetraaminophthalocyanine (FePc-NH2) with a high degree of functionalization. This is achieved by exploiting fluorographene's reactivity with the diethyl bromomalonate, producing graphene-dicarboxylic acid after hydrolysis, which is conjugated with FePc-NH2. The material exhibits an ultrahigh gravimetric specific capacitance of 960 F g(-1) at 1 A g(-1) and zero losses upon charging-discharging cycling. The energy density of 59 Wh kg(-1) is eminent among supercapacitors operating in aqueous electrolytes with graphene-based electrode materials. This is attributed to the structural and functional synergy of the covalently bound components, giving rise to a zwitterionic surface with extensive - stacking, but not graphene restacking, all being very beneficial for charge and ionic transport. The safety of the proposed system, owing to the benign Na2SO4 aqueous electrolyte, the high capacitance, energy density, and potential of preparing the electrode material on a large-scale and at low cost make the reported strategy very attractive for development of supercapacitors based on the covalent attachment of suitable molecules onto graphene toward high-synergy hybrids.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10403 - Physical chemistry
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
ADVANCED FUNCTIONAL MATERIALS
ISSN
1616-301X
e-ISSN
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Volume of the periodical
28
Issue of the periodical within the volume
29
Country of publishing house
DE - GERMANY
Number of pages
9
Pages from-to
"1801111-1"-"1801111-9"
UT code for WoS article
000438708600013
EID of the result in the Scopus database
2-s2.0-85047516975