Scattering dynamics of oxygen molecules on nafion membrane

Masataka Nakauchi, Takuya Mabuchi, Ikuya Kinefuchi, Hideki Takeuchi, Takashi Tokumasu

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

Abstract

The scattering behaviors of oxygen molecules on a Nafion membrane, which is a typical polymer electrolyte membrane used in polymer electrolyte fuel cells, have been investigated using molecular dynamics simulations. We have evaluated the probability density functions of the translational energy and scattering angle of the scattered oxygen molecules for a wide range of incident conditions and water contents. It was found that the translational energy of oxygen molecules does not accommodate with the Nafion membrane during the collision, and oxygen molecules are reflected diffusely on the surface. Two types of collision behaviors, i.e., single and multiple collisions, were observed in the simulations. Increasing the normal component of the incident energy and the water content results in the longer residence time on the ionomer surface.

Original languageEnglish
Title of host publication30th International Symposium on Rarefied Gas Dynamics, RGD 2016
EditorsHenning Struchtrup, Andrew Ketsdever
PublisherAmerican Institute of Physics Inc.
ISBN (Electronic)9780735414488
DOIs
Publication statusPublished - 2016 Nov 15
Event30th International Symposium on Rarefied Gas Dynamics, RGD 2016 - Victoria, Canada
Duration: 2016 Jul 102016 Jul 15

Publication series

NameAIP Conference Proceedings
Volume1786
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

Other30th International Symposium on Rarefied Gas Dynamics, RGD 2016
Country/TerritoryCanada
CityVictoria
Period16/7/1016/7/15

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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