RuxNb1-xO2 catalyst for the oxygen evolution reaction in proton exchange membrane water electrolysers

Vinod Kumar Puthiyapura, S. Pasupathi, S. Basu, X. Wu, H. Su, N. Varagunapandiyan, B. Pollet, K. Scott

Research output: Contribution to journalArticle

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Abstract

Bimetallic catalyst system of ruthenium oxide (RuO) and niobium oxide (NbO) was prepared using the Adams method and the hydrolysis method. Physical and electrochemical characterizations of the catalysts were studied using X-ray diffraction (XRD), Scanning electron microscopy (SEM), cyclic voltammogram (CV) and polarization measurements. NbO addition to RuO was found to increase the stability of RuO. In Adams method the sodium nitrate was found to be forming complex with NbO at high temperature reaction. This makes Adams method unsuitable for the synthesis of RuO -NbO bimetallic system. Hydrolysis method on other hand does not have this problem. But a proper mixture of two oxides was not obtained in hydrolysis method. A lower crystallite size for bimetallic system was obtained with Adams method compared to hydrolysis method. RuO prepared by Adams method had higher activity compared to the hydrolysis counterpart in electrolyzer operation with nafion membrane. A cell voltage of 1.62 V was obtained with RuO (A) at 1 A/cm. A higher stability for RuNbO(A) compared to RuO(A) was observed in continuous cyclic voltammogram and electrolyzer cell test.
Original languageEnglish
Pages (from-to)8605-8616
Number of pages12
JournalInternational Journal of Hydrogen Energy
Volume38
Issue number21
DOIs
Publication statusPublished - 17 Jul 2013

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Ruthenium
Ion exchange
Protons
ruthenium
Niobium oxide
membranes
niobium oxides
Membranes
catalysts
Catalysts
Oxides
Oxygen
protons
oxides
hydrolysis
oxygen
Hydrolysis
water
Water
sodium nitrates

Cite this

Puthiyapura, V. K., Pasupathi, S., Basu, S., Wu, X., Su, H., Varagunapandiyan, N., ... Scott, K. (2013). RuxNb1-xO2 catalyst for the oxygen evolution reaction in proton exchange membrane water electrolysers. International Journal of Hydrogen Energy, 38(21), 8605-8616. https://doi.org/10.1016/j.ijhydene.2013.04.100
Puthiyapura, Vinod Kumar ; Pasupathi, S. ; Basu, S. ; Wu, X. ; Su, H. ; Varagunapandiyan, N. ; Pollet, B. ; Scott, K. / RuxNb1-xO2 catalyst for the oxygen evolution reaction in proton exchange membrane water electrolysers. In: International Journal of Hydrogen Energy. 2013 ; Vol. 38, No. 21. pp. 8605-8616.
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abstract = "Bimetallic catalyst system of ruthenium oxide (RuO) and niobium oxide (NbO) was prepared using the Adams method and the hydrolysis method. Physical and electrochemical characterizations of the catalysts were studied using X-ray diffraction (XRD), Scanning electron microscopy (SEM), cyclic voltammogram (CV) and polarization measurements. NbO addition to RuO was found to increase the stability of RuO. In Adams method the sodium nitrate was found to be forming complex with NbO at high temperature reaction. This makes Adams method unsuitable for the synthesis of RuO -NbO bimetallic system. Hydrolysis method on other hand does not have this problem. But a proper mixture of two oxides was not obtained in hydrolysis method. A lower crystallite size for bimetallic system was obtained with Adams method compared to hydrolysis method. RuO prepared by Adams method had higher activity compared to the hydrolysis counterpart in electrolyzer operation with nafion membrane. A cell voltage of 1.62 V was obtained with RuO (A) at 1 A/cm. A higher stability for RuNbO(A) compared to RuO(A) was observed in continuous cyclic voltammogram and electrolyzer cell test.",
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Puthiyapura, VK, Pasupathi, S, Basu, S, Wu, X, Su, H, Varagunapandiyan, N, Pollet, B & Scott, K 2013, 'RuxNb1-xO2 catalyst for the oxygen evolution reaction in proton exchange membrane water electrolysers', International Journal of Hydrogen Energy, vol. 38, no. 21, pp. 8605-8616. https://doi.org/10.1016/j.ijhydene.2013.04.100

RuxNb1-xO2 catalyst for the oxygen evolution reaction in proton exchange membrane water electrolysers. / Puthiyapura, Vinod Kumar; Pasupathi, S.; Basu, S.; Wu, X.; Su, H.; Varagunapandiyan, N.; Pollet, B.; Scott, K.

In: International Journal of Hydrogen Energy, Vol. 38, No. 21, 17.07.2013, p. 8605-8616.

Research output: Contribution to journalArticle

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AU - Puthiyapura, Vinod Kumar

AU - Pasupathi, S.

AU - Basu, S.

AU - Wu, X.

AU - Su, H.

AU - Varagunapandiyan, N.

AU - Pollet, B.

AU - Scott, K.

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N2 - Bimetallic catalyst system of ruthenium oxide (RuO) and niobium oxide (NbO) was prepared using the Adams method and the hydrolysis method. Physical and electrochemical characterizations of the catalysts were studied using X-ray diffraction (XRD), Scanning electron microscopy (SEM), cyclic voltammogram (CV) and polarization measurements. NbO addition to RuO was found to increase the stability of RuO. In Adams method the sodium nitrate was found to be forming complex with NbO at high temperature reaction. This makes Adams method unsuitable for the synthesis of RuO -NbO bimetallic system. Hydrolysis method on other hand does not have this problem. But a proper mixture of two oxides was not obtained in hydrolysis method. A lower crystallite size for bimetallic system was obtained with Adams method compared to hydrolysis method. RuO prepared by Adams method had higher activity compared to the hydrolysis counterpart in electrolyzer operation with nafion membrane. A cell voltage of 1.62 V was obtained with RuO (A) at 1 A/cm. A higher stability for RuNbO(A) compared to RuO(A) was observed in continuous cyclic voltammogram and electrolyzer cell test.

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