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Novel Anhydrous Superprotonic Ionic Liquids and Membranes for Application in Mid-temperature Fuel Cells


Abstract This thesis studies three different types of anhydrous proton conducting electrolytes for use in fuel cells. The proton energy level scheme is used to make the first electrolyte which is a rubbery polymer in which the conductivity reaches values typical of activated Nafion, even though it is completely anhydrous. The protons are introduced into a cross-linked polyphospazene rubber by the superacid HOTf, which is absorbed by partial protonation of the backbone nitrogens. The decoupling of conductivity from segmental relaxation times assessed by comparison with conductivity relaxation times amounts to some 10 orders of magnitude, but it cannot be concluded whether it is purely protonic or due equally to a mobile OTf- or H(OTf)2-; component. T... (more)
Created Date 2013
Contributor Ansari, Younes (Author) / Angell, Charles A (Advisor) / Richert, Ranko (Committee member) / Chizmeshya, Andrew (Committee member) / Wolf, George (Committee member) / Arizona State University (Publisher)
Subject Chemistry / Energy / Fuel Cell / Ionic Liquid / Phosphoric Acid / polymer membrane / proton conductivity / superacid
Type Doctoral Dissertation
Extent 152 pages
Language English
Copyright
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Note Ph.D. Chemistry 2013
Collaborating Institutions Graduate College / ASU Library
Additional Formats MODS / OAI Dublin Core / RIS


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Description Dissertation/Thesis