Kinetic study of the hydrogen oxidation reaction on sub-stoichiometric titanium oxide-supported platinum electrocatalyst in acid solution
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2009
Authors
Babić, Biljana M.
Gulicovski, Jelena

Gajić Krstajić, Ljiljana

Elezović, Nevenka

Radmilović, Velimir R.

Krstajić, Nedeljko
Vračar, Ljiljana
Article (Published version)

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The kinetics and mechanism of the hydrogen oxidation reaction were studied in 0.5 mol dm-3 HClO4 solution on an electrode based on titanium oxide with Magneli phase structure-supported platinum electrocatalyst applied on rotation Au disk electrode. Pt catalyst was prepared by impregnation method from 2-propanol solution of Pt(NH3)2(NO2)2 and sub-stoichiometric titanium oxide powder. Sub-stiochiometric titanium oxide support was characterized by X-ray diffraction and BET techniques. The synthesized catalyst was analyzed by TEM technique. Based on Tafel-Heyrovsky-Volmer mechanism the corresponding kinetic equations were derived to describe the hydrogen oxidation current-potential behavior on RDE over the entire potential region. The polarization RDE curves were fitted with derived polarization equations according to proposed model. The fitting shows that the HOR on Pt proceeds most likely via the Tafel-Volmer (TV) pathway in the lower potential region, while the Heyrovsky-Volmer (HV) pat...hway is operative in the higher potential region. It is pointed out that Tafel equation that has been frequently used for the kinetics analysis in the HOR, can not reproduce the polarization curves measured with high mass-transport rates. Polarization measurements on RDE revealed that the Pt catalyst deposited on titanium suboxide support showed equal specific activity for the HOR compared to conventional carbon-supported Pt fuel cell catalyst. © 2008 Elsevier B.V. All rights reserved.
Keywords:
kinetic equation / mechanism / hydrogen oxidation reaction / titanium sub-oxideSource:
Journal of Power Sources, 2009, 193, 1, 99-106Publisher:
- Elsevier
Funding / projects:
DOI: 10.1016/j.jpowsour.2008.11.142
ISSN: 0378-7753
WoS: 000267561400014
Scopus: 2-s2.0-66849124847
Institution/Community
Институт техничких наука САНУ / Institute of Technical Sciences of SASATY - JOUR AU - Babić, Biljana M. AU - Gulicovski, Jelena AU - Gajić Krstajić, Ljiljana AU - Elezović, Nevenka AU - Radmilović, Velimir R. AU - Krstajić, Nedeljko AU - Vračar, Ljiljana PY - 2009 UR - https://dais.sanu.ac.rs/123456789/3480 AB - The kinetics and mechanism of the hydrogen oxidation reaction were studied in 0.5 mol dm-3 HClO4 solution on an electrode based on titanium oxide with Magneli phase structure-supported platinum electrocatalyst applied on rotation Au disk electrode. Pt catalyst was prepared by impregnation method from 2-propanol solution of Pt(NH3)2(NO2)2 and sub-stoichiometric titanium oxide powder. Sub-stiochiometric titanium oxide support was characterized by X-ray diffraction and BET techniques. The synthesized catalyst was analyzed by TEM technique. Based on Tafel-Heyrovsky-Volmer mechanism the corresponding kinetic equations were derived to describe the hydrogen oxidation current-potential behavior on RDE over the entire potential region. The polarization RDE curves were fitted with derived polarization equations according to proposed model. The fitting shows that the HOR on Pt proceeds most likely via the Tafel-Volmer (TV) pathway in the lower potential region, while the Heyrovsky-Volmer (HV) pathway is operative in the higher potential region. It is pointed out that Tafel equation that has been frequently used for the kinetics analysis in the HOR, can not reproduce the polarization curves measured with high mass-transport rates. Polarization measurements on RDE revealed that the Pt catalyst deposited on titanium suboxide support showed equal specific activity for the HOR compared to conventional carbon-supported Pt fuel cell catalyst. © 2008 Elsevier B.V. All rights reserved. PB - Elsevier T2 - Journal of Power Sources T1 - Kinetic study of the hydrogen oxidation reaction on sub-stoichiometric titanium oxide-supported platinum electrocatalyst in acid solution SP - 99 EP - 106 VL - 193 IS - 1 DO - 10.1016/j.jpowsour.2008.11.142 UR - https://hdl.handle.net/21.15107/rcub_dais_3480 ER -
@article{ author = "Babić, Biljana M. and Gulicovski, Jelena and Gajić Krstajić, Ljiljana and Elezović, Nevenka and Radmilović, Velimir R. and Krstajić, Nedeljko and Vračar, Ljiljana", year = "2009", abstract = "The kinetics and mechanism of the hydrogen oxidation reaction were studied in 0.5 mol dm-3 HClO4 solution on an electrode based on titanium oxide with Magneli phase structure-supported platinum electrocatalyst applied on rotation Au disk electrode. Pt catalyst was prepared by impregnation method from 2-propanol solution of Pt(NH3)2(NO2)2 and sub-stoichiometric titanium oxide powder. Sub-stiochiometric titanium oxide support was characterized by X-ray diffraction and BET techniques. The synthesized catalyst was analyzed by TEM technique. Based on Tafel-Heyrovsky-Volmer mechanism the corresponding kinetic equations were derived to describe the hydrogen oxidation current-potential behavior on RDE over the entire potential region. The polarization RDE curves were fitted with derived polarization equations according to proposed model. The fitting shows that the HOR on Pt proceeds most likely via the Tafel-Volmer (TV) pathway in the lower potential region, while the Heyrovsky-Volmer (HV) pathway is operative in the higher potential region. It is pointed out that Tafel equation that has been frequently used for the kinetics analysis in the HOR, can not reproduce the polarization curves measured with high mass-transport rates. Polarization measurements on RDE revealed that the Pt catalyst deposited on titanium suboxide support showed equal specific activity for the HOR compared to conventional carbon-supported Pt fuel cell catalyst. © 2008 Elsevier B.V. All rights reserved.", publisher = "Elsevier", journal = "Journal of Power Sources", title = "Kinetic study of the hydrogen oxidation reaction on sub-stoichiometric titanium oxide-supported platinum electrocatalyst in acid solution", pages = "99-106", volume = "193", number = "1", doi = "10.1016/j.jpowsour.2008.11.142", url = "https://hdl.handle.net/21.15107/rcub_dais_3480" }
Babić, B. M., Gulicovski, J., Gajić Krstajić, L., Elezović, N., Radmilović, V. R., Krstajić, N.,& Vračar, L.. (2009). Kinetic study of the hydrogen oxidation reaction on sub-stoichiometric titanium oxide-supported platinum electrocatalyst in acid solution. in Journal of Power Sources Elsevier., 193(1), 99-106. https://doi.org/10.1016/j.jpowsour.2008.11.142 https://hdl.handle.net/21.15107/rcub_dais_3480
Babić BM, Gulicovski J, Gajić Krstajić L, Elezović N, Radmilović VR, Krstajić N, Vračar L. Kinetic study of the hydrogen oxidation reaction on sub-stoichiometric titanium oxide-supported platinum electrocatalyst in acid solution. in Journal of Power Sources. 2009;193(1):99-106. doi:10.1016/j.jpowsour.2008.11.142 https://hdl.handle.net/21.15107/rcub_dais_3480 .
Babić, Biljana M., Gulicovski, Jelena, Gajić Krstajić, Ljiljana, Elezović, Nevenka, Radmilović, Velimir R., Krstajić, Nedeljko, Vračar, Ljiljana, "Kinetic study of the hydrogen oxidation reaction on sub-stoichiometric titanium oxide-supported platinum electrocatalyst in acid solution" in Journal of Power Sources, 193, no. 1 (2009):99-106, https://doi.org/10.1016/j.jpowsour.2008.11.142 ., https://hdl.handle.net/21.15107/rcub_dais_3480 .