A study of ordered mesoporous carbon doped with Co and Ni as a catalyst of oxygen reduction reaction in both alkaline and acidic media
Само за регистроване кориснике
2018
Аутори
Gavrilov, NemanjaMomcilovic, Milan
Dobrota, Ana S.
Stanković, Dalibor
Jokić, Bojan
Babić, Biljana
Skorodumova, Natalia V.
Mentus, Slavko V.
Pasti, Igor A.
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
The incorporation of trace amounts ( lt 0.2%) of Co and Ni noticeably enhanced the catalytic activity of nitrogen free ordered mesoporous carbon (OMC) towards oxygen reduction reaction (ORR). (Co,Ni)-doped OMCs were characterized by N-2-adsorption measurements, X-ray powder diffraction, field emission scanning electron microscopy and Raman spectroscopy methods, and their ORR activity was estimated by voltammetry on rotating disk electrode in acidic and alkaline media. (Co,Ni)-doped OMCs show modest activities in acidic media, while the catalytic activity in alkaline media is rather high. The measured activities are compared to the Pt-based and Pt-free ORR catalysts reported in the literature. The number of electrons consumed per O-2 in metal-doped OMCs was found to vary between 2 and 4, which is advantageous in comparison to metal-free OMC. Also, the mass activities of metal-doped OMCs were found to be up to 2.5 times higher compared to that of metal-free OMC. We suggest that the ORR ...activity is governed by a balance between (i) textural properties, which determine the electrochemically accessible surface of the catalyst and which are influenced by the addition of a metal precursor, and (ii) novel active sites formed upon the introduction of metals into the carbon structure. In particular, our Density Functional Theory calculations suggest that Co and Ni atoms embedded into the single vacancies of graphene can activate the O-2 molecule and contribute to the decomposition of peroxide.
Кључне речи:
Electrocatalysts / Oxygen reduction reaction / Ordered mesoporous carbon / Cobalt / Nickel / Metal dopantsИзвор:
Surface and Coatings Technology, 2018, 349, 511-521Издавач:
- Elsevier Science Sa, Lausanne
Финансирање / пројекти:
- Литијум-јон батерије и горивне ћелије-истраживање и развој (RS-45014)
- Генерисање и карактеризација нанофотонских функционалних структура у биомедицини и информатици (RS-45016)
- Нове технологије за мониторинг и заштиту животног окружења од штетних хемијских супстанци и радијационог оптерећења (RS-43009)
- Strengthening of the MagBioVin Research and Innovation Team for Development of Novel Approaches for Tumour Therapy based on Nanostructured Materials (EU-621375)
- Serbian Academy of Sciences and Arts [F-190]
- Carl Tryggers Foundation for Scientific Research
- NATO Project [EAP.SFPP 984925]
- Swedish Research Council [2014-5993]
DOI: 10.1016/j.surfcoat.2018.06.008
ISSN: 0257-8972
WoS: 000441492600054
Scopus: 2-s2.0-85048745900
Колекције
Институција/група
Inovacioni centar / Innovation CentreTY - JOUR AU - Gavrilov, Nemanja AU - Momcilovic, Milan AU - Dobrota, Ana S. AU - Stanković, Dalibor AU - Jokić, Bojan AU - Babić, Biljana AU - Skorodumova, Natalia V. AU - Mentus, Slavko V. AU - Pasti, Igor A. PY - 2018 UR - https://cherry.chem.bg.ac.rs/handle/123456789/2088 AB - The incorporation of trace amounts ( lt 0.2%) of Co and Ni noticeably enhanced the catalytic activity of nitrogen free ordered mesoporous carbon (OMC) towards oxygen reduction reaction (ORR). (Co,Ni)-doped OMCs were characterized by N-2-adsorption measurements, X-ray powder diffraction, field emission scanning electron microscopy and Raman spectroscopy methods, and their ORR activity was estimated by voltammetry on rotating disk electrode in acidic and alkaline media. (Co,Ni)-doped OMCs show modest activities in acidic media, while the catalytic activity in alkaline media is rather high. The measured activities are compared to the Pt-based and Pt-free ORR catalysts reported in the literature. The number of electrons consumed per O-2 in metal-doped OMCs was found to vary between 2 and 4, which is advantageous in comparison to metal-free OMC. Also, the mass activities of metal-doped OMCs were found to be up to 2.5 times higher compared to that of metal-free OMC. We suggest that the ORR activity is governed by a balance between (i) textural properties, which determine the electrochemically accessible surface of the catalyst and which are influenced by the addition of a metal precursor, and (ii) novel active sites formed upon the introduction of metals into the carbon structure. In particular, our Density Functional Theory calculations suggest that Co and Ni atoms embedded into the single vacancies of graphene can activate the O-2 molecule and contribute to the decomposition of peroxide. PB - Elsevier Science Sa, Lausanne T2 - Surface and Coatings Technology T1 - A study of ordered mesoporous carbon doped with Co and Ni as a catalyst of oxygen reduction reaction in both alkaline and acidic media VL - 349 SP - 511 EP - 521 DO - 10.1016/j.surfcoat.2018.06.008 ER -
@article{ author = "Gavrilov, Nemanja and Momcilovic, Milan and Dobrota, Ana S. and Stanković, Dalibor and Jokić, Bojan and Babić, Biljana and Skorodumova, Natalia V. and Mentus, Slavko V. and Pasti, Igor A.", year = "2018", abstract = "The incorporation of trace amounts ( lt 0.2%) of Co and Ni noticeably enhanced the catalytic activity of nitrogen free ordered mesoporous carbon (OMC) towards oxygen reduction reaction (ORR). (Co,Ni)-doped OMCs were characterized by N-2-adsorption measurements, X-ray powder diffraction, field emission scanning electron microscopy and Raman spectroscopy methods, and their ORR activity was estimated by voltammetry on rotating disk electrode in acidic and alkaline media. (Co,Ni)-doped OMCs show modest activities in acidic media, while the catalytic activity in alkaline media is rather high. The measured activities are compared to the Pt-based and Pt-free ORR catalysts reported in the literature. The number of electrons consumed per O-2 in metal-doped OMCs was found to vary between 2 and 4, which is advantageous in comparison to metal-free OMC. Also, the mass activities of metal-doped OMCs were found to be up to 2.5 times higher compared to that of metal-free OMC. We suggest that the ORR activity is governed by a balance between (i) textural properties, which determine the electrochemically accessible surface of the catalyst and which are influenced by the addition of a metal precursor, and (ii) novel active sites formed upon the introduction of metals into the carbon structure. In particular, our Density Functional Theory calculations suggest that Co and Ni atoms embedded into the single vacancies of graphene can activate the O-2 molecule and contribute to the decomposition of peroxide.", publisher = "Elsevier Science Sa, Lausanne", journal = "Surface and Coatings Technology", title = "A study of ordered mesoporous carbon doped with Co and Ni as a catalyst of oxygen reduction reaction in both alkaline and acidic media", volume = "349", pages = "511-521", doi = "10.1016/j.surfcoat.2018.06.008" }
Gavrilov, N., Momcilovic, M., Dobrota, A. S., Stanković, D., Jokić, B., Babić, B., Skorodumova, N. V., Mentus, S. V.,& Pasti, I. A.. (2018). A study of ordered mesoporous carbon doped with Co and Ni as a catalyst of oxygen reduction reaction in both alkaline and acidic media. in Surface and Coatings Technology Elsevier Science Sa, Lausanne., 349, 511-521. https://doi.org/10.1016/j.surfcoat.2018.06.008
Gavrilov N, Momcilovic M, Dobrota AS, Stanković D, Jokić B, Babić B, Skorodumova NV, Mentus SV, Pasti IA. A study of ordered mesoporous carbon doped with Co and Ni as a catalyst of oxygen reduction reaction in both alkaline and acidic media. in Surface and Coatings Technology. 2018;349:511-521. doi:10.1016/j.surfcoat.2018.06.008 .
Gavrilov, Nemanja, Momcilovic, Milan, Dobrota, Ana S., Stanković, Dalibor, Jokić, Bojan, Babić, Biljana, Skorodumova, Natalia V., Mentus, Slavko V., Pasti, Igor A., "A study of ordered mesoporous carbon doped with Co and Ni as a catalyst of oxygen reduction reaction in both alkaline and acidic media" in Surface and Coatings Technology, 349 (2018):511-521, https://doi.org/10.1016/j.surfcoat.2018.06.008 . .