Superior capacitive and electrocatalytic properties of carbonized nanostructured polyaniline upon a low-temperature hydrothermal treatment
Samo za registrovane korisnike
2013
Autori
Vujković, MilicaGavrilov, Nemanja
Pasti, Igor
Krstić, Jugoslav
Travas-Sejdic, Jadranka
Ciric-Marjanovic, Gordana
Mentus, Slavko
Članak u časopisu (Objavljena verzija)
Metapodaci
Prikaz svih podataka o dokumentuApstrakt
Carbonized nanostructured polyaniline (C.PANI) was hydrothermally treated in 1 mol dm(-3) KOH at 200 degrees C. The treatment caused significant reduction of micropore volume but negligible changes in mesoporous domain, as evidenced by nitrogen adsorption measurements, as well as significant increase of surface N/C and O/C ratios, as evidenced by XPS method. In comparison to the C.PANI precursor, the new material, denoted as C.PANI.HAT200, delivered twice as high gravimetric capacitances, amounting to 363, 220 and 432 F g(-1), in 6 mol dm(-3) KOH, 2 mol dm(-3) KNO3 and 1 mol dm(-3) H2SO4, respectively, when measured potentiodynamically at a scan rate of 5 mV s(-1). Moreover, its exceptionally high electrocatalytic activity towards the oxygen reduction reaction (ORR), almost one order of magnitude higher than that of C.PANI was evidenced in alkaline media, approaching closely a four-electron pathway. The onset potential for ORR matched the one of platinum-based electrocatalyst. Signific...ant improvements of both capacitive and electrocatalytic properties of C.PANI.HAT200 were discussed in correlation to the modification of surface functional groups. These findings affirm the low temperature hydrothermal post-synthetic modification of N-doped nanocarbons as a route of production of advanced multifunctional carbon materials with exceptional characteristics.
Izvor:
Carbon, 2013, 64, 472-486Izdavač:
- Oxford : Pergamon-Elsevier Science Ltd
Finansiranje / projekti:
- Litijum-jon baterije i gorivne ćelije-istraživanje i razvoj (RS-45014)
- Elektroprovodni i redoks-aktivni polimeri i oligomeri: sinteza, struktura, svojstva i primena (RS-172043)
- Nanostrukturni funkcionalni i kompozitni materijali u katalitičkim i sorpcionim procesima (RS-45001)
- Serbian Academy of Science and Arts
DOI: 10.1016/j.carbon.2013.07.100
ISSN: 0008-6223
WoS: 000324898600052
Scopus: 2-s2.0-84883598629
Institucija/grupa
IHTMTY - JOUR AU - Vujković, Milica AU - Gavrilov, Nemanja AU - Pasti, Igor AU - Krstić, Jugoslav AU - Travas-Sejdic, Jadranka AU - Ciric-Marjanovic, Gordana AU - Mentus, Slavko PY - 2013 UR - https://cer.ihtm.bg.ac.rs/handle/123456789/1162 AB - Carbonized nanostructured polyaniline (C.PANI) was hydrothermally treated in 1 mol dm(-3) KOH at 200 degrees C. The treatment caused significant reduction of micropore volume but negligible changes in mesoporous domain, as evidenced by nitrogen adsorption measurements, as well as significant increase of surface N/C and O/C ratios, as evidenced by XPS method. In comparison to the C.PANI precursor, the new material, denoted as C.PANI.HAT200, delivered twice as high gravimetric capacitances, amounting to 363, 220 and 432 F g(-1), in 6 mol dm(-3) KOH, 2 mol dm(-3) KNO3 and 1 mol dm(-3) H2SO4, respectively, when measured potentiodynamically at a scan rate of 5 mV s(-1). Moreover, its exceptionally high electrocatalytic activity towards the oxygen reduction reaction (ORR), almost one order of magnitude higher than that of C.PANI was evidenced in alkaline media, approaching closely a four-electron pathway. The onset potential for ORR matched the one of platinum-based electrocatalyst. Significant improvements of both capacitive and electrocatalytic properties of C.PANI.HAT200 were discussed in correlation to the modification of surface functional groups. These findings affirm the low temperature hydrothermal post-synthetic modification of N-doped nanocarbons as a route of production of advanced multifunctional carbon materials with exceptional characteristics. PB - Oxford : Pergamon-Elsevier Science Ltd T2 - Carbon T1 - Superior capacitive and electrocatalytic properties of carbonized nanostructured polyaniline upon a low-temperature hydrothermal treatment VL - 64 SP - 472 EP - 486 DO - 10.1016/j.carbon.2013.07.100 ER -
@article{ author = "Vujković, Milica and Gavrilov, Nemanja and Pasti, Igor and Krstić, Jugoslav and Travas-Sejdic, Jadranka and Ciric-Marjanovic, Gordana and Mentus, Slavko", year = "2013", abstract = "Carbonized nanostructured polyaniline (C.PANI) was hydrothermally treated in 1 mol dm(-3) KOH at 200 degrees C. The treatment caused significant reduction of micropore volume but negligible changes in mesoporous domain, as evidenced by nitrogen adsorption measurements, as well as significant increase of surface N/C and O/C ratios, as evidenced by XPS method. In comparison to the C.PANI precursor, the new material, denoted as C.PANI.HAT200, delivered twice as high gravimetric capacitances, amounting to 363, 220 and 432 F g(-1), in 6 mol dm(-3) KOH, 2 mol dm(-3) KNO3 and 1 mol dm(-3) H2SO4, respectively, when measured potentiodynamically at a scan rate of 5 mV s(-1). Moreover, its exceptionally high electrocatalytic activity towards the oxygen reduction reaction (ORR), almost one order of magnitude higher than that of C.PANI was evidenced in alkaline media, approaching closely a four-electron pathway. The onset potential for ORR matched the one of platinum-based electrocatalyst. Significant improvements of both capacitive and electrocatalytic properties of C.PANI.HAT200 were discussed in correlation to the modification of surface functional groups. These findings affirm the low temperature hydrothermal post-synthetic modification of N-doped nanocarbons as a route of production of advanced multifunctional carbon materials with exceptional characteristics.", publisher = "Oxford : Pergamon-Elsevier Science Ltd", journal = "Carbon", title = "Superior capacitive and electrocatalytic properties of carbonized nanostructured polyaniline upon a low-temperature hydrothermal treatment", volume = "64", pages = "472-486", doi = "10.1016/j.carbon.2013.07.100" }
Vujković, M., Gavrilov, N., Pasti, I., Krstić, J., Travas-Sejdic, J., Ciric-Marjanovic, G.,& Mentus, S.. (2013). Superior capacitive and electrocatalytic properties of carbonized nanostructured polyaniline upon a low-temperature hydrothermal treatment. in Carbon Oxford : Pergamon-Elsevier Science Ltd., 64, 472-486. https://doi.org/10.1016/j.carbon.2013.07.100
Vujković M, Gavrilov N, Pasti I, Krstić J, Travas-Sejdic J, Ciric-Marjanovic G, Mentus S. Superior capacitive and electrocatalytic properties of carbonized nanostructured polyaniline upon a low-temperature hydrothermal treatment. in Carbon. 2013;64:472-486. doi:10.1016/j.carbon.2013.07.100 .
Vujković, Milica, Gavrilov, Nemanja, Pasti, Igor, Krstić, Jugoslav, Travas-Sejdic, Jadranka, Ciric-Marjanovic, Gordana, Mentus, Slavko, "Superior capacitive and electrocatalytic properties of carbonized nanostructured polyaniline upon a low-temperature hydrothermal treatment" in Carbon, 64 (2013):472-486, https://doi.org/10.1016/j.carbon.2013.07.100 . .