İyonik tuz içeren polimer elektrolitlerde iyonik iletkenlik davranışı


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Thesis Type: Postgraduate

Institution Of The Thesis: Istanbul University, Institute of Graduate Studies In Sciences, Fen Fakültesi Bölümü, Turkey

Approval Date: 2010

Thesis Language: Turkish

Student: Yavuz Şahin

Principal Supervisor (For Co-Supervisor Theses): Hulusi Kemal Ulutaş

Abstract:

Polyimide membranes, forming by adding ionic liquids in two different mole ratios to

the polyimide-based polymer matrices, are produced as an alternative for commonly

used perflorosülfonik acid (Nafion) membranes. High proton conductivity has been

achieved as a result of sulfuric acid-H2SO4 doping process on polymer electrolytes used

high temperature fuel cells in the literature. Therefore, the increment of the ionic

conductivity of our samples has been obtained by doping acid. Acid-doped and undoped

two types of membrane have been obtained. The frequency, thickness and temperature

dependence of ac conductivity and dielectric constant for all the samples were

investigated.