Sökning: "ionic and protonic conduction and diffusion"

Hittade 2 avhandlingar innehållade orden ionic and protonic conduction and diffusion.

  1. 1. Intermediate Temperature Solid Ionic Conductors and Fuel Cells

    Detta är en avhandling från Chalmers University of Technology

    Författare :Zhu Bin; Chalmers tekniska högskola.; Chalmers University of Technology.; [1995]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Teknisk materialvetenskap; Materials science; intermediate temperature; oxyacid salts; molten phase; salt-ceramic composites; ionic and protonic conduction and diffusion; bulk and interfacial conduction; blocked and non-blocked mobile species; solid state proton conductors and fuel cells;

    Sammanfattning : Novel solid proton conductors based on oxyacid salts and salt-ceramic composites and intermediate temperature fuel cells have been developed in this thesis work. The discovery of proton conduction in these materials introduces a new concept of proton conductors and starts a new research field - Intermediate Temperature Solid Proton Conductors and Fuel Cells. LÄS MER

  2. 2. Point defects and ion conduction in solid oxides: a first-principles case study of La2Zr2O7

    Detta är en avhandling från Chalmers University of Technology

    Författare :B. Joakim Nyman; Chalmers tekniska högskola.; Chalmers University of Technology.; [2010]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Kondenserade materiens fysik; Condensed matter physics; Defekter och diffusion; Defects and diffusion; Elektronstruktur; Electronic structure; Halvledarfysik; Semiconductor physics; hydrogen economy; hydrogen; fuel cell; solid oxide fuel cell; SOFC; ceramic electrolyte; ion conduction; point defect; acceptor doping; charge compensation; self compensation; oxygen vacancy; proton; trapping; defect cluster; solid oxide; pyrochlore; lanthanum zirconate; La2Zr2O7; computational methods; first principles; DFT;

    Sammanfattning : In the endeavor to attain a clean environment and sustainable energy consumption, the notion of a future hydrogen economy stands out as one of the grandest visions. Striving for this vision, a critical task lies in optimizing the performance of the fuel-cell devices responsible for extracting electric power from the energy stored in hydrogen molecules. LÄS MER