|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||High-Temperature Systems for Energy Conversion and Storage
||Solid Acid Electrolytes Applied to Electricity Generation and Gas Separation
||Alexander Papandrew, Ramez Elgammal, Ondrej Dyck, David Wilson, Wesley Tennyson, Gabriel Veith, Thomas Zawodzinski
|On-Site Speaker (Planned)
The crystalline solid CsH2PO4 (CDP) is a member of the class of materials known as the superprotonic solid acids, distinguished by thermally-activated polymorphic phase transitions to high-symmetry crystal systems associated with large increases in proton conductivty. Hydrogen-air fuel cells and other electrochemical devices based on CDP typically operate at temperatures from 230 to 260 C. The design of air electrodes in electricity-generating cells based on CDP is dominated by structural constraints imposed by the need for tri-phase contact of catalyst, electrolyte, and gaseous reactants. In state-of-the-art electrodes, a vapor-phase catalyst deposition method is employed to maximize electrochemically active area. Details of this process, alternative electrode architectures, and the performance of devices based on these electrodes will be discussed. CDP is also a candidate electrolyte for electrochemical hydrogen separation applications. Here we examine the viability of nonprecious catalysts and hydrogen separation from various feed streams using these materials.
||Planned: A print-only volume