Sökning: "frenkel defects"

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  1. 1. Defects in ceria

    Master-uppsats, Institutionen för fysik, kemi och biologi

    Författare :Marcus Gidby; [2009]
    Nyckelord :ceria; cerium dioxide; frenkel defects; oxygen defects; SOFC; DFT; density functional theory; first principles calculations; LDA U; VASP;

    Sammanfattning : The solid oxide fuel cell (SOFC) technology has been under research since thelate 1950s, and most of the research has been on designs utilizing yttria stabilized zirconia (YSZ) as the electrolyte of choice. However, the SOFC technology has the major drawback of requiring high operation temperatures (up to 1000 degrees Celcius), so research of alternative materials have come into interest that would possibly require a lower working temperature without any significant loss of conductivity. LÄS MER