Two-Dimensional CVD-Graphene/Polyaniline Supercapacitors: Synthesis Strategy and Electrochemical Operation
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F21%3A00545001" target="_blank" >RIV/61388955:_____/21:00545001 - isvavai.cz</a>
Result on the web
<a href="http://hdl.handle.net/11104/0321784" target="_blank" >http://hdl.handle.net/11104/0321784</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1021/acsami.1c05054" target="_blank" >10.1021/acsami.1c05054</a>
Alternative languages
Result language
angličtina
Original language name
Two-Dimensional CVD-Graphene/Polyaniline Supercapacitors: Synthesis Strategy and Electrochemical Operation
Original language description
Nanocomposites of graphene materials and conducting polymers have been extensively studied as promising materials for electrodes of supercapacitors. Here, we present a graphene/polyaniline heterostructure consisting of a CVD-graphene and polyaniline monolayer and its electrochemical operation in a supercapacitor. The synthesis employs functionalization of graphene by p-phenylene sulfonic groups and oxidative polymerization of anilinium by ammonium persulfate under reaction conditions, providing no bulk polyaniline. Scanning electron microscopy, atomic force microscopy, and Raman spectroscopy showed the selective formation of polyaniline on the graphene. In situ Raman spectroelectrochemistry and cyclic voltammetry (both in a microdroplet setup) confirm the reversibility of polyaniline redox transitions and graphene electrochemical doping. After an increase within the initial 200 cycles due to the formation of benzoquinone-hydroquinone defects in polyaniline, the specific areal capacitance remained for 2400 cycles with +/- 1% retention at 21.2 mu F cm(-2), one order of magnitude higher than the capacitance of pristine graphene.
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
<a href="/en/project/GX20-08633X" target="_blank" >GX20-08633X: ÅrchitectRonics of Two-dimensional crystals via synergy of chiral electro-chemical and opto-electronic concepts on Å-scale</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
ACS Applied Materials and Interfaces
ISSN
1944-8244
e-ISSN
1944-8252
Volume of the periodical
13
Issue of the periodical within the volume
29
Country of publishing house
US - UNITED STATES
Number of pages
10
Pages from-to
34686-34695
UT code for WoS article
000679917500092
EID of the result in the Scopus database
2-s2.0-85111601875