Acceptor-Doped BaZrO3 Perovskite

Proton conduction is an intrinsic part of all life§processing systems including, for example, biological§photosynthesis of green plants. Besides nature,§proton conductors have a significant technological§interest: especially as a separating material§(electrolyte) for various electrochemical devices§such as fuel cells. In this context, there is a need§for new materials and acceptor-doped perovskite§oxides, have shown high proton conductivity.§Therefore, they may be used as electrolyte materials§for fuel cells. This book focuses on acceptor-doped§BaZrO3perovskite oxides. There is a lot of on-going§research aimed at improving the proton conductivity§in these materials. In this work it was shown for the§first time that it is possible to increase the proton§conductivity by increasing the doping concentrations§to very high levels. In addition to this, the§influence of different acceptor-dopant ions and§co-doping on proton conductivity was investigated.§The outcome of these investigations are useful for a§deeper understanding of the conduction mechanism and§will thereby help in improving conduction properties§and in predicting new materials with higher proton§conductivity.