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, Nemanja M.Momčilović, Milan Z.
Dobrota, Ana S.
Stanković, Dalibor M.
Jokić, Bojan M.
Babić, Biljana M.
Skorodumova, Natalia V.
Mentus, Slavko V.
Pašti, Igor A.
Чланак у часопису (Објављена верзија)
,
© 2018 Elsevier B.V.
Метаподаци
Приказ свих података о документуАпстракт
The incorporation of trace amounts (<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 N2-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 O2in 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 activit...y 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 O2molecule and contribute to the decomposition of peroxide.
Кључне речи:
cobalt / electrocatalysts / metal dopants / nickel / ordered mesoporous carbon / oxygen reduction reactionИзвор:
Surface and Coatings Technology, 2018, 349, 511-521Финансирање / пројекти:
- Нове технологије за мониторинг и заштиту животног окружења од штетних хемијских супстанци и радијационог оптерећења (RS-43009)
- Литијум-јон батерије и горивне ћелије-истраживање и развој (RS-45014)
- Генерисање и карактеризација нанофотонских функционалних структура у биомедицини и информатици (RS-45016)
- Swedish Research Council (2014-5993)
- Serbian Academy of Sciences and Arts (F-190)
- NATO (EAP·SFPP 984925) (“DURAPEM - Novel Materials for Durable Proton Exchange Membrane Fuel Cells”)
- Strengthening of the MagBioVin Research and Innovation Team for Development of Novel Approaches for Tumour Therapy based on Nanostructured Materials (EU-621375)
DOI: 10.1016/j.surfcoat.2018.06.008
ISSN: 0257-8972
WoS: 000441492600054
Scopus: 2-s2.0-85048745900
URI
https://linkinghub.elsevier.com/retrieve/pii/S0257897218305838https://vinar.vin.bg.ac.rs/handle/123456789/7727
Колекције
Институција/група
VinčaTY - JOUR AU - Gavrilov, Nemanja M. AU - Momčilović, Milan Z. AU - Dobrota, Ana S. AU - Stanković, Dalibor M. AU - Jokić, Bojan M. AU - Babić, Biljana M. AU - Skorodumova, Natalia V. AU - Mentus, Slavko V. AU - Pašti, Igor A. PY - 2018 UR - https://linkinghub.elsevier.com/retrieve/pii/S0257897218305838 UR - https://vinar.vin.bg.ac.rs/handle/123456789/7727 AB - The incorporation of trace amounts (<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 N2-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 O2in 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 O2molecule and contribute to the decomposition of peroxide. 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 M. and Momčilović, Milan Z. and Dobrota, Ana S. and Stanković, Dalibor M. and Jokić, Bojan M. and Babić, Biljana M. and Skorodumova, Natalia V. and Mentus, Slavko V. and Pašti, Igor A.", year = "2018", abstract = "The incorporation of trace amounts (<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 N2-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 O2in 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 O2molecule and contribute to the decomposition of peroxide.", 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. M., Momčilović, M. Z., Dobrota, A. S., Stanković, D. M., Jokić, B. M., Babić, B. M., Skorodumova, N. V., Mentus, S. V.,& Pašti, 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, 349, 511-521. https://doi.org/10.1016/j.surfcoat.2018.06.008
Gavrilov NM, Momčilović MZ, Dobrota AS, Stanković DM, Jokić BM, Babić BM, Skorodumova NV, Mentus SV, Pašti 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 M., Momčilović, Milan Z., Dobrota, Ana S., Stanković, Dalibor M., Jokić, Bojan M., Babić, Biljana M., Skorodumova, Natalia V., Mentus, Slavko V., Pašti, 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 . .