Theses and Dissertations from UMD

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New submissions to the thesis/dissertation collections are added automatically as they are received from the Graduate School. Currently, the Graduate School deposits all theses and dissertations from a given semester after the official graduation date. This means that there may be up to a 4 month delay in the appearance of a give thesis/dissertation in DRUM

More information is available at Theses and Dissertations at University of Maryland Libraries.

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Author: search.filters.author.Patel, Nripendra KumarSubject: search.filters.subject.Degradation mechanisms

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    RELIABILITY OF CERAMIC ELECTRODES OF SOLID OXIDE FUEL CELLS
    (2018) Patel, Nripendra Kumar; Pecht, Michael G; Das, Diganta; Mechanical Engineering; Digital Repository at the University of Maryland; University of Maryland (College Park, Md.)
    Solid oxide fuel cells (SOFCs) are highly efficient chemical to electrical energy conversion devices that have potential in a global energy strategy. The wide adoption of SOFCs is currently limited by cell durability and manufacturing cost. Ceramic anodes show promise for improved durability and are prominent candidate for electrodes of SOFCs. Ishikawa diagram was developed and a comprehensive failure modes, mechanisms, effects, and criticality analysis (FMMECA) methodology is applied to ceramic anodes of SOFCs to understand possible causes of failure. Despite high conductivity and better performance of conventional ceramic electrodes i.e. strontium-based perovskite electrodes, there is a concern that humidity, especially high humidity and high temperature, during storage can affect the properties prior to installation. Degradation mechanisms which can manifest themselves during storage was found and empirical degradation model was developed to determine the storage specification for strontium-based perovskite electrodes of SOFCs.