In situ measurements of the water uptake in Yb doped SrCeO3

New synthesis of nanopowders of proton conducting materials. A route to densified proton ceramics

“…In these experiments, the highest weight increase of 0.14% corresponds to 50% of vacancy filling. It was already observed that the maximum theoretical water uptake in rare earth doped cerates is never reached [48][49][50] and our results are in good agreement with the water incorporation study at different temperatures of Kruth on BCY10 [51], who described a weight increase of 0.13% at 500 1C. In the present work, it was observed that up to 80% of the oxygen vacancies can be filled, but at lower temperature, 250 1C.…”

Synthesis, densification and electrical properties of strontium cerate ceramics

“…(4) have been measured by thermogravimetry and also estimated from conductivity measurements. 17,36,37 Hydration enthalpies are reported in the range from −115 to −160 kJ/mol, in agreement with the value of −145 kJ/mol obtained here.…”

Preparation, sintering, and water incorporation of proton conducting Ba0.99Zr0.8Y0.2O3??: comparison between three different synthesis techniques

“…Water uptake of the materials prepared in the best conditions of PG and MTD processes was checked by gravimetric examination which technique was previously described [11]. Parameters used as water pressure range, time for equilibration, typical sample mass, temperature range are, respectively, 0-40 hPa, 120 min, 100 mg and 300-900 8C.…”