Developing an advanced electrocatalyst derived from triangular silver nanoplates@polyvinylpyrrolidone-polyaniline nanocomposites
Нема приказа
Аутори
Stamenović, UnaVodnik, Vesna
Gavrilov, Nemanja M.
Pašti, Igor A.
Otončar, Mojca
Mitrić, Miodrag
Škapin, Srečo Davor
Чланак у часопису (Објављена верзија)
,
© 2019 Elsevier B.V.
Метаподаци
Приказ свих података о документуАпстракт
There is a need for developing new and perspective materials for oxygen reduction reaction (ORR) as one of the most essential reactions in the life processes, energy storage, and conversion, in order to exchange the most often used materials based on platinum supported/unsupported substrates, especially carbon supports. Herein, we present low-cost alternative electrode materials consisting of two silver@polyvinylpyrrolidone-polyaniline (Ag@PVP-PANI) nanocomposites that showed great potential as Pt-free ORR electrocatalysts. Simple and effective polymerization processes of aniline in the methanol, using PVP as shape-mediated stabilizator and stimulator of its oxidation by silver ions, led to the formation of nanocomposites with truncated triangular silver nanoparticles dispersed throughout granular and wrinkle-like surfaces of PANI matrix. The behavior of PVP chains in acidic conditions showed great influence on nanocomposites’ conductivities, regardless of the high silver content. Elec...trocatalytic survey of nanocomposites examined in alkaline media toward ORR pointed out their appreciable activities with high ORR onset potentials. Moreover, for the nanocomposite with lower silver content (18.9 wt. %), the four-electron ORR pathway was evidenced. © 2019 Elsevier B.V.
Кључне речи:
Triangular silver nanoplates / Polyaniline / Nanocomposite / Oxygen reduction reaction / ElectrocatalystИзвор:
Synthetic Metals, 2019, 257, 116173-Финансирање / пројекти:
- Утицај величине, облика и структуре наночестица на њихова својства и својства нанокомпозита (RS-172056)
- Материјали редуковане димензионалности за ефикасну апсорпцију светлости и конверзију енергије (RS-45020)
- Литијум-јон батерије и горивне ћелије-истраживање и развој (RS-45014)
DOI: 10.1016/j.synthmet.2019.116173
ISSN: 0379-6779
WoS: 000496896100008
Scopus: 2-s2.0-85072253767
Колекције
Институција/група
VinčaTY - JOUR AU - Stamenović, Una AU - Vodnik, Vesna AU - Gavrilov, Nemanja M. AU - Pašti, Igor A. AU - Otončar, Mojca AU - Mitrić, Miodrag AU - Škapin, Srečo Davor PY - 2019 UR - https://vinar.vin.bg.ac.rs/handle/123456789/8512 AB - There is a need for developing new and perspective materials for oxygen reduction reaction (ORR) as one of the most essential reactions in the life processes, energy storage, and conversion, in order to exchange the most often used materials based on platinum supported/unsupported substrates, especially carbon supports. Herein, we present low-cost alternative electrode materials consisting of two silver@polyvinylpyrrolidone-polyaniline (Ag@PVP-PANI) nanocomposites that showed great potential as Pt-free ORR electrocatalysts. Simple and effective polymerization processes of aniline in the methanol, using PVP as shape-mediated stabilizator and stimulator of its oxidation by silver ions, led to the formation of nanocomposites with truncated triangular silver nanoparticles dispersed throughout granular and wrinkle-like surfaces of PANI matrix. The behavior of PVP chains in acidic conditions showed great influence on nanocomposites’ conductivities, regardless of the high silver content. Electrocatalytic survey of nanocomposites examined in alkaline media toward ORR pointed out their appreciable activities with high ORR onset potentials. Moreover, for the nanocomposite with lower silver content (18.9 wt. %), the four-electron ORR pathway was evidenced. © 2019 Elsevier B.V. T2 - Synthetic Metals T1 - Developing an advanced electrocatalyst derived from triangular silver nanoplates@polyvinylpyrrolidone-polyaniline nanocomposites VL - 257 SP - 116173 DO - 10.1016/j.synthmet.2019.116173 ER -
@article{ author = "Stamenović, Una and Vodnik, Vesna and Gavrilov, Nemanja M. and Pašti, Igor A. and Otončar, Mojca and Mitrić, Miodrag and Škapin, Srečo Davor", year = "2019", abstract = "There is a need for developing new and perspective materials for oxygen reduction reaction (ORR) as one of the most essential reactions in the life processes, energy storage, and conversion, in order to exchange the most often used materials based on platinum supported/unsupported substrates, especially carbon supports. Herein, we present low-cost alternative electrode materials consisting of two silver@polyvinylpyrrolidone-polyaniline (Ag@PVP-PANI) nanocomposites that showed great potential as Pt-free ORR electrocatalysts. Simple and effective polymerization processes of aniline in the methanol, using PVP as shape-mediated stabilizator and stimulator of its oxidation by silver ions, led to the formation of nanocomposites with truncated triangular silver nanoparticles dispersed throughout granular and wrinkle-like surfaces of PANI matrix. The behavior of PVP chains in acidic conditions showed great influence on nanocomposites’ conductivities, regardless of the high silver content. Electrocatalytic survey of nanocomposites examined in alkaline media toward ORR pointed out their appreciable activities with high ORR onset potentials. Moreover, for the nanocomposite with lower silver content (18.9 wt. %), the four-electron ORR pathway was evidenced. © 2019 Elsevier B.V.", journal = "Synthetic Metals", title = "Developing an advanced electrocatalyst derived from triangular silver nanoplates@polyvinylpyrrolidone-polyaniline nanocomposites", volume = "257", pages = "116173", doi = "10.1016/j.synthmet.2019.116173" }
Stamenović, U., Vodnik, V., Gavrilov, N. M., Pašti, I. A., Otončar, M., Mitrić, M.,& Škapin, S. D.. (2019). Developing an advanced electrocatalyst derived from triangular silver nanoplates@polyvinylpyrrolidone-polyaniline nanocomposites. in Synthetic Metals, 257, 116173. https://doi.org/10.1016/j.synthmet.2019.116173
Stamenović U, Vodnik V, Gavrilov NM, Pašti IA, Otončar M, Mitrić M, Škapin SD. Developing an advanced electrocatalyst derived from triangular silver nanoplates@polyvinylpyrrolidone-polyaniline nanocomposites. in Synthetic Metals. 2019;257:116173. doi:10.1016/j.synthmet.2019.116173 .
Stamenović, Una, Vodnik, Vesna, Gavrilov, Nemanja M., Pašti, Igor A., Otončar, Mojca, Mitrić, Miodrag, Škapin, Srečo Davor, "Developing an advanced electrocatalyst derived from triangular silver nanoplates@polyvinylpyrrolidone-polyaniline nanocomposites" in Synthetic Metals, 257 (2019):116173, https://doi.org/10.1016/j.synthmet.2019.116173 . .