Electrochemical properties and durability of electrocatalysts supported on SnO2

T. Tsukatsunea; Y. Takabatakea; Z. Nodab; A. Hayashi; K. Sasakia

doi:10.1149/05801.1251ecst

Electrochemical properties and durability of electrocatalysts supported on SnO₂

T. Tsukatsunea, Y. Takabatakea, Z. Nodab, A. Hayashi, K. Sasakia

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

For polymer electrolyte fuel cells (PEFCs), carbon corrosion, leading to lower activities of catalysts under cathode conditions, is one of the important technological issues to be solved. We have been developing SnO₂ and Nb-SnO₂ as alternative support materials. In this study, the oxygen reduction reaction (ORR) activity and the durability of Pt/SnO₂ and Pt/Sn_0.98Nb_0.02O₂ against voltage cycling between 1.0 and 1.5 V_RHE are quantitatively investigated. Longer ORR durability was verified, compared to the standard catalyst, Pt/Vulcan. Furthermore, we have found that the degradation mechanism of ORR is probably different between carbon black and SnO₂-based supports. In the case of SnO₂-based catalysts, degradation arose mainly from the loss of electrochemical surface area (ECSA), while other factors were also involved for Pt/Vulcan. Consequently, SnO₂ is a promising candidate electrocatalyst support material to solve carbon corrosion problems of PEFCs.

Original language	English
Pages (from-to)	1251-1257
Number of pages	7
Journal	ECS Transactions
Volume	58
Issue number	1
DOIs	https://doi.org/10.1149/05801.1251ecst
Publication status	Published - 2013

All Science Journal Classification (ASJC) codes

Engineering(all)

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title = "Electrochemical properties and durability of electrocatalysts supported on SnO2",

abstract = "For polymer electrolyte fuel cells (PEFCs), carbon corrosion, leading to lower activities of catalysts under cathode conditions, is one of the important technological issues to be solved. We have been developing SnO2 and Nb-SnO2 as alternative support materials. In this study, the oxygen reduction reaction (ORR) activity and the durability of Pt/SnO2 and Pt/Sn0.98Nb0.02O2 against voltage cycling between 1.0 and 1.5 VRHE are quantitatively investigated. Longer ORR durability was verified, compared to the standard catalyst, Pt/Vulcan. Furthermore, we have found that the degradation mechanism of ORR is probably different between carbon black and SnO2-based supports. In the case of SnO2-based catalysts, degradation arose mainly from the loss of electrochemical surface area (ECSA), while other factors were also involved for Pt/Vulcan. Consequently, SnO2 is a promising candidate electrocatalyst support material to solve carbon corrosion problems of PEFCs.",

author = "T. Tsukatsunea and Y. Takabatakea and Z. Nodab and A. Hayashi and K. Sasakia",

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T1 - Electrochemical properties and durability of electrocatalysts supported on SnO2

AU - Tsukatsunea, T.

AU - Takabatakea, Y.

AU - Nodab, Z.

AU - Hayashi, A.

AU - Sasakia, K.

PY - 2013

Y1 - 2013

N2 - For polymer electrolyte fuel cells (PEFCs), carbon corrosion, leading to lower activities of catalysts under cathode conditions, is one of the important technological issues to be solved. We have been developing SnO2 and Nb-SnO2 as alternative support materials. In this study, the oxygen reduction reaction (ORR) activity and the durability of Pt/SnO2 and Pt/Sn0.98Nb0.02O2 against voltage cycling between 1.0 and 1.5 VRHE are quantitatively investigated. Longer ORR durability was verified, compared to the standard catalyst, Pt/Vulcan. Furthermore, we have found that the degradation mechanism of ORR is probably different between carbon black and SnO2-based supports. In the case of SnO2-based catalysts, degradation arose mainly from the loss of electrochemical surface area (ECSA), while other factors were also involved for Pt/Vulcan. Consequently, SnO2 is a promising candidate electrocatalyst support material to solve carbon corrosion problems of PEFCs.

AB - For polymer electrolyte fuel cells (PEFCs), carbon corrosion, leading to lower activities of catalysts under cathode conditions, is one of the important technological issues to be solved. We have been developing SnO2 and Nb-SnO2 as alternative support materials. In this study, the oxygen reduction reaction (ORR) activity and the durability of Pt/SnO2 and Pt/Sn0.98Nb0.02O2 against voltage cycling between 1.0 and 1.5 VRHE are quantitatively investigated. Longer ORR durability was verified, compared to the standard catalyst, Pt/Vulcan. Furthermore, we have found that the degradation mechanism of ORR is probably different between carbon black and SnO2-based supports. In the case of SnO2-based catalysts, degradation arose mainly from the loss of electrochemical surface area (ECSA), while other factors were also involved for Pt/Vulcan. Consequently, SnO2 is a promising candidate electrocatalyst support material to solve carbon corrosion problems of PEFCs.

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