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Statements

Subject Item
n2:RIV%2F60461373%3A22310%2F12%3A43893539%21RIV13-MSM-22310___
rdf:type
skos:Concept n9:Vysledek
dcterms:description
Graphene related materials are widely expected to play a major role as materials for the construction of supercapacitors. We demonstrate here that graphene oxides prepared by various well-established methods exhibit dramatically different capacitances. We exfoliated graphite oxide sonographically to graphene oxide (GO) and we reduced GO by chemical or electrochemical means to chemically reduced graphene oxide (CRGO) and electrochemically reduced graphene oxide (ERGO); in addition, graphite oxide was thermally exfoliated leading to thermally reduced graphene oxide (TRGO). We found clear dependence of weight specific capacitance upon amount of oxygen containing groups presented on the surface of these graphenes. GO exhibits the lowest and TRGO the highest values of weight specific capacitance. Graphene related materials are widely expected to play a major role as materials for the construction of supercapacitors. We demonstrate here that graphene oxides prepared by various well-established methods exhibit dramatically different capacitances. We exfoliated graphite oxide sonographically to graphene oxide (GO) and we reduced GO by chemical or electrochemical means to chemically reduced graphene oxide (CRGO) and electrochemically reduced graphene oxide (ERGO); in addition, graphite oxide was thermally exfoliated leading to thermally reduced graphene oxide (TRGO). We found clear dependence of weight specific capacitance upon amount of oxygen containing groups presented on the surface of these graphenes. GO exhibits the lowest and TRGO the highest values of weight specific capacitance.
dcterms:title
Graphene materials preparation methods have dramatic influence upon their capacitance Graphene materials preparation methods have dramatic influence upon their capacitance
skos:prefLabel
Graphene materials preparation methods have dramatic influence upon their capacitance Graphene materials preparation methods have dramatic influence upon their capacitance
skos:notation
RIV/60461373:22310/12:43893539!RIV13-MSM-22310___
n9:predkladatel
n10:orjk%3A22310
n5:aktivita
n16:I
n5:aktivity
I
n5:cisloPeriodika
1
n5:dodaniDat
n6:2013
n5:domaciTvurceVysledku
n18:3148262
n5:druhVysledku
n11:J
n5:duvernostUdaju
n19:S
n5:entitaPredkladatele
n15:predkladatel
n5:idSjednocenehoVysledku
138402
n5:idVysledku
RIV/60461373:22310/12:43893539
n5:jazykVysledku
n17:eng
n5:klicovaSlova
Graphene oxide; Capacitance; Graphene
n5:klicoveSlovo
n8:Graphene n8:Capacitance n8:Graphene%20oxide
n5:kodStatuVydavatele
CZ - Česká republika
n5:kontrolniKodProRIV
[89E51CF241BF]
n5:nazevZdroje
Electrochemistry Communications
n5:obor
n12:CA
n5:pocetDomacichTvurcuVysledku
1
n5:pocetTvurcuVysledku
5
n5:rokUplatneniVysledku
n6:2012
n5:svazekPeriodika
14
n5:tvurceVysledku
Sofer, Zdeněk Ambrosi, Adriano Chng, Elaine Lay Khim Buglione, Lucia Pumera, Martin
n5:wos
000300199900002
s:issn
1388-2481
s:numberOfPages
4
n7:doi
10.1016/j.elecom.2011.09.013
n13:organizacniJednotka
22310