Effects of atmospheric trace species on the oxygen reduction reaction and the production of hydrogen peroxide

Shinichiro Imabayashi, Yoko Kondo, Ryotaro Komori, Akihiko Kawano, Takashi Ohsaka

Research output: Chapter in Book/Report/Conference proceedingConference contribution

13 Citations (Scopus)

Abstract

The effects of the atmospheric trace species (SO2, Cl -, NH3) on the formation of H2O2 accompanying the O2 reduction reaction (ORR) have been elucidated in 0.1 M HClO4 using rotating ring-disk Pt electrode methodology. The potential at which the ORR starts shifts to the negative direction and the amount of formed H2O2 increases concomitantly as the amount of added SO2 or CI- increases, although Cl - less affects. The extent of the H2O2 formation is correlated to the coverage of SO2 or Cl- which was estimated from the decrease in the area of a hydrogen desorption peaks. This suggests that the adsorption of SO2 or Cl- on Pt reduces the number of the adjacent adsorption sites necessary for breaking of the O-O bond and then enhances the production of. No effect on the ORR activity and the H2O2 formation was observed for NH3.

Original languageEnglish
Title of host publicationECS Transactions
Pages925-930
Number of pages6
Volume16
Edition2 PART 1
DOIs
Publication statusPublished - 2008
EventProton Exchange Membrane Fuel Cells 8, PEMFC - 214th ECS Meeting - Honolulu, HI
Duration: 2008 Oct 122008 Oct 17

Other

OtherProton Exchange Membrane Fuel Cells 8, PEMFC - 214th ECS Meeting
CityHonolulu, HI
Period08/10/1208/10/17

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ASJC Scopus subject areas

  • Engineering(all)

Cite this

Imabayashi, S., Kondo, Y., Komori, R., Kawano, A., & Ohsaka, T. (2008). Effects of atmospheric trace species on the oxygen reduction reaction and the production of hydrogen peroxide. In ECS Transactions (2 PART 1 ed., Vol. 16, pp. 925-930) https://doi.org/10.1149/1.2981931