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A New Class of Solid State, Single-ion Conductors (H+ and Li+): Silicon-based Plastic Crystals


Abstract Plastic crystals as a class are of much interest in applications as solid state electrolytes for electrochemical energy conversion devices. A subclass exhibit very high protonic conductivity and its members have been investigated as possible fuel cell electrolytes, as first demonstrated by Haile’s group in 2001 with CsHSO4. To date these have been inorganic compounds with tetrahedral oxyanions carrying one or more protons, charge-balanced by large alkali cations. Above the rotator phase transition, the HXO4- anions re-orient at a rate dependent on temperature while the centers of mass remain ordered. The transition is accompanied by a conductivity "jump" (as much as four orders of magnitude, to ~ 10 mScm-1 in the now-classic case ... (more)
Created Date 2016
Contributor Klein, Iolanda Santana (Author) / Angell, Charles A (Advisor) / Buttry, Daniel A (Committee member) / Richert, Ranko (Committee member) / Arizona State University (Publisher)
Subject Chemistry / electrolytes / fuel cells / lithium ion batteries / plastic crystal / silicon / solid state
Type Doctoral Dissertation
Extent 124 pages
Language English
Copyright
Reuse Permissions All Rights Reserved
Note Doctoral Dissertation Chemistry 2016
Collaborating Institutions Graduate College / ASU Library
Additional Formats MODS / OAI Dublin Core / RIS


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Description Dissertation/Thesis