- AutorIn
- Takahiro Ohkubo
- Koh Kidena
- Akihiro Ohira
- Titel
- Time-dependent diffusion coefficient of proton in polymer electrolyte membrane
- Zitierfähige Url:
- https://nbn-resolving.org/urn:nbn:de:bsz:15-qucosa-192269
- Quellenangabe
- Diffusion fundamentals - 10
- Quellenangabe
- Diffusion fundamentals 10 (2009) 21, S. 1-3
- Erstveröffentlichung
- 2009
- Abstract (EN)
- We investigated the time-dependent self-diffusion coefficients of water, D(T eff), in polymer electrolyte membranes at 278 K. TheD(T eff) was measured from T eff=0.7 to 100 ms by field gradient NMR techniques. The results showed that the self-diffusion coefficients of water were dependent on T eff less than 2 ms due to restricted diffusion, and were constant beyond 3 ms. The tortuosity and surface-to-volume ratio related to water diffusion were also estimated from D(T eff). The obtained values revealed the existence of large-scale restricted geometry compared with well-known nanometer-sized domain in polymer electrolyte membranes.
- Freie Schlagwörter (DE)
- Diffusion, Transport
- Freie Schlagwörter (EN)
- diffusion, transport
- Klassifikation (DDC)
- 530
- Herausgeber (Institution)
- National Institute of Advanced Industrial Science and Technology (AIST)
- Universität Leipzig
- URN Qucosa
- urn:nbn:de:bsz:15-qucosa-192269
- Veröffentlichungsdatum Qucosa
- 17.12.2015
- Dokumenttyp
- Artikel
- Sprache des Dokumentes
- Englisch