Production of poly(vinyl alcohol)/Nafion (R) nanofibers and their stability assessment for the use in direct methanol fuel cells
Küçük Resim Yok
Tarih
2021
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Sage Publications Inc
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
The aim of this study is to investigate the electrospinning of Nafion (R) nanofibers with poly(vinyl alcohol) (PVA) as a carrier polymer and to assess the thermal and chemical stability of resultant PVA/Nafion (R) nanofibers for the use in direct methanol fuel cells, in simulated conditions. Bead-free PVA/Nafion (R) nanofibers were produced using higher molecular weight PVA. Resultant PVA and PVA/Nafion (R) nanofibers were stabilized using two different methods which are BTCA crosslinking and thermal stabilization, followed by sulfonation of the PVA part. FT-IR analysis demonstrated that the membranes were stabilized and sulfonated successfully. Thermal, water, methanol and oxidative stability of the membranes were tested in addition to ion-exchange capacity. Morphological changes in the structure were analyzed using SEM analysis. Thermally stabilized PVA/Nafion (R) nanofibrous membrane was found to be stable against water, methanol and oxidative effects. The nanofibrous structure was well preserved after treatments, while the other membranes became a film-like material. Thermal stability of the PVA/Nafion (R) nanofibrous membrane was similar to that of commercial Nafion (R) 115 membrane up to 200celcius.
Açıklama
Anahtar Kelimeler
Nanofiber, electrospinning, Nafion®, fuel cell, stability
Kaynak
Journal of Industrial Textiles
WoS Q Değeri
Q1
Scopus Q Değeri
Cilt
50
Sayı
6
