Peculiarities of electrical transfer and isotopic effects H/D in the proton-conducting oxide BaZr0.9Y0.1O3 − δ

BaCeO3: Materials development, properties and application

“…It was found that partial substitution of cerium with zirconium is one of the best ways to optimise transport and mechanical properties and also This paper is devoted mainly to the applied aspects of the synthesis and application of proton conductors based on barium cerate. However, it is noteworthy to mention that these systems are of significant fundamental interest for researchers from the viewpoint of mechanisms of conductivity [186,187,212,[354][355][356][357], H/D isotope effects [358][359][360][361][362], macrokinetic and thermodynamic aspects of SOFCs based on co-ionic or pure protonic conductors [363][364][365][366][367][368][369][370]. It can be concluded that although at the present time many technical difficulties and problems related to the optimization of the target properties of BaCeO 3 -based proton conductors have been solved, the quest for the optimal protonic (co-ionic) materials…”

Electrochemistry and energy conversion features of protonic ceramic cells with mixed ionic-electronic electrolytes

“…Many perovskite-related PCMs ( i.e. , oxides based on BaCeO 3 , 62 BaZrO 3 , 63 LaYO 3 , 64 and LaYbO 3 , ref. 65 and 66) exhibit ionic conductivity under reducing atmospheres along with the p-type conductivity that appears under oxidizing conditions.…”

Features of the electrochemical reaction of hydrogen oxidation on the composite SrFeO 3 ‐based anode for a protonic ceramic fuel cell

“…[8][9][10][11][12][13][14][15][16][17][18] Most of them are complex oxides with a perovskite-related structure, for example, cerates or zirconates of alkaline earth metals (Ca, Sr, Ba). [13][14][15][16][17][18] At the current stage, the main challenge is to create efficient electrodes for the proton-conducting fuel cells (PCFC), which have acceptable characteristics at intermediate temperatures. Electrode kinetics plays an important role in the process of the current generation and influences the overall efficiency of the device.…”

“…Proton conductivity has small activation energy and therefore appears at a sufficient level at lower temperatures, around 600°C 7 . So far, a lot of proton‐conducting electrolytes are already known and investigated in detail 8‐18 . Most of them are complex oxides with a perovskite‐related structure, for example, cerates or zirconates of alkaline earth metals (Ca, Sr, Ba) 13‐18 .…”

“…Proton conductivity has small activation energy and therefore appears at a sufficient level at lower temperatures, around 600 C. 7 So far, a lot of proton-conducting electrolytes are already known and investigated in detail. [8][9][10][11][12][13][14][15][16][17][18] Most of them are complex oxides with a perovskite-related structure, for example, cerates or zirconates of alkaline earth metals (Ca, Sr, Ba). [13][14][15][16][17][18] At the current stage, the main challenge is to create efficient electrodes for the proton-conducting fuel cells (PCFC), which have acceptable characteristics at intermediate temperatures.…”