Thermally reduced fluorographenes as efficient electrode materials for supercapacitors
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F19%3A73597844" target="_blank" >RIV/61989592:15310/19:73597844 - isvavai.cz</a>
Result on the web
<a href="https://pubs.rsc.org/en/content/articlehtml/2019/nr/c9nr07255a" target="_blank" >https://pubs.rsc.org/en/content/articlehtml/2019/nr/c9nr07255a</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1039/C9NR07255A" target="_blank" >10.1039/C9NR07255A</a>
Alternative languages
Result language
angličtina
Original language name
Thermally reduced fluorographenes as efficient electrode materials for supercapacitors
Original language description
There is an urgent need for a simple and up-scalable method for the preparation of supercapacitor electrode materials due to increasing global energy consumption worldwide. We have discovered that fluorographene exhibits great potential for the development of new kinds of supercapacitors aimed at practical applications. We have shown that time control of isothermal reduction of fluorographite at 450 degrees C under a hydrogen atmosphere led to the fine-tuning of fluorine content and electronic properties of the resulting fluorographene derivatives. Charge transfer resistances (R-ct) of the thermally reduced fluorographenes (TRFGs) were decreased with respect to the pristine fluorographene; however, the R-ct vs. time-of-reduction plot showed a v-shaped profile. The specific capacitance vs. time-of-reduction of TRFG followed the v-shaped trend, which could be the result of the decreasing content of sp(3) carbons and increasing content of structural defects. An optimized material exhibited values of specific capacitance up to 539 F g(-1) recorded at a current density of 0.25 A g(-1) and excellent cycling durability with 100% specific capacitance retention after 1500 cycles in a three-electrode configuration and 96.7% of specific capacitance after 30000 cycles in a two-electrode setup.
Czech name
—
Czech description
—
Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
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)<br>S - Specificky vyzkum na vysokych skolach
Others
Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Nanoscale
ISSN
2040-3364
e-ISSN
—
Volume of the periodical
11
Issue of the periodical within the volume
44
Country of publishing house
GB - UNITED KINGDOM
Number of pages
12
Pages from-to
21364-21375
UT code for WoS article
000503282100029
EID of the result in the Scopus database
2-s2.0-85074964591