3 more other lanthanides obtained。 The only drawback is that the proton-conducting ceramic BaCeO3 chemical groups in an atmosphere of CO2 and H2O in the displa
y stability is not very high, it is easy to react with other substances。 The added Ta 5+, In3+, Ga3+ isoelectric relatively large negative ions to partially replace the Ce4+ i ons can be very good to enhance its chemical stability。Proton conducting ceramics have unique electrical conducting properties at elevated temperatures that make them suitable for a number of electrochemical device applications including protonic cer amic fuel cells, steam electrolyzers, hydrogen sensors, hydrogen permeation membra
nes, steam permeation membranes, catalytic membrane reactors, etc。 However, the r efractory nature of the currently prevailing proton conducting ceramics, with barium
zirconates and cerates as representatives, results in significant challenges to their i mplementation in these promising applications。
Proton conducting ceramic has unique electrical properties at high temperatures, they are suitable for many electrochemical device comprising a proton conducting ceramic fuel cells, steam electrolysis, a hydrogen gas sensor, a hydrogen permeable membrane, vapor permeable membrane, catalytic membrane reactors, etc。 。 Popular proton conductive ceramics to Ba, Zr, Ce represented。
BaCe0。7In0。2Gd0。1O3-as conductive ceramic material has many advantages, after doping In its chemical stability increased conductivity doping Gd has also been im proved, and the group is BaCeO3 conductive ceramic material is a proton conductin g the highest conductivity of the ceramic。 Common BaCeO3 based conductive cera
mics sintered require relatively harsh conditions, up to 1700 ℃, but after adding a
sintering aid sintering conditions have been greatly improved, the degree to about 1
300 ℃ sintered compact。 So we study the effects of different sintering aids on the sintering behavior and electrical conductivity samples in this experiment。 Low tem
perature solid phase reaction sintering method BaCe0。7In0。2Gd0。1O3-sintered samples, choose a different sintering aids, influence of sintering aids on the sintering charac
teristics BaCe0。7In0。2Gd0。1O3-ceramics, and on the future research directions It has a certain role in guiding。
Through solid reaction sintering Preparation of the sample obtained using X-ray diffraction (XRD) and scanning electron microscopy experiments (SEM), the sampl es were found to belong to a single phase perovskite structure, and CuO added as a sintering aid sample density is very good, after the match had sintering curve sa mples to verify this conclusion: the density is in descending order is CuO, CoO, N iO, Fe2O3。 While the electrical properties of the samples after the test was found to make adding sample CuO as sintering aids electrical performance is relatively goo 不同烧结助剂对BaCe0.7In0.2Gd0.1O3-δ陶瓷烧结特性的影响(2):http://www.youerw.com/wuli/lunwen_91700.html