Modelling the Nafion® diffraction profile by molecular dynamics simulation
2010 (English)In: Journal of Power Sources, ISSN 0378-7753, Vol. 195, no 18, 5962-5965 p.Article in journal (Refereed) Published
A diffraction profile is here derived from classical Molecular Dynamics (MD) simulation for the hydrated perfluorosulphonic acid fuel-cell membrane material Nafion at 363 K using a 76 angstrom x 76 angstrom x 76 angstrom box. The MD simulation reproduces the phase-separated nanoscale structure of Nafion and water channels. No specific structural features, such as a characteristic channel diameter, could be distinguished. Nevertheless, the envelope of the simulated diffraction profile based on 6000 MD "snapshots" reproduced well the key features of the experimental SAXS profile. This draws into questions previous interpretations of diffraction data for the Nafion (R) system which involve simplistic notions of channel- and cluster-diameter.
Place, publisher, year, edition, pages
2010. Vol. 195, no 18, 5962-5965 p.
Nafion (R), Molecular dynamics simulation, Diffraction profile
Research subject Chemistry with specialization in Inorganic Chemistry
IdentifiersURN: urn:nbn:se:uu:diva-136873DOI: 10.1016/j.jpowsour.2009.12.057ISI: 000279203100024OAI: oai:DiVA.org:uu-136873DiVA: diva2:377876