Water vapour solubility and conductivity study of the proton conductor BaCe(0.9−x)ZrxY0.1O(3−δ)

Wet chemical synthesis and characterisation of Ba 0.5 Sr 0.5 Ce 0.6 Zr 0.2 Gd 0.1 Y 0.1 O 3−δ proton conductor

“…BSCZGY and BZ3C5YYb for comparison were heated up to 1200 ºC in pure CO2 with a flow rate of 40 ml/min, held isothermally for 30 minutes and then cooled down with the same rate of 3 o C/min. The heat treatment in CO2 up 1200 º C or a bit higher has already been reported by many in the literature [14,35,40,49,50]. Fig.…”

“…5 (a). The value of conductivity is almost double than the reported conductivity for BaCe0.6Zr0.3Y0.1O3 -δ which was ~ 2.33 x 10 -3 S cm -1 at 600 ºC under the same conditions [49].…”

“…The weight gain is comparable to the weight gained for a composition with higher Zr content of 70 mol% at the B site i.e. BaCe0.2Zr0.7Y0.1O3 -δ, which was roughly 0.3 -0.4%, when heated in pure CO2 up to 1250 ºC with a heating/cooling rate of 2 ºC/min [49]. For composition with 30 mol% of Zr at the B site i.e.…”

“…For composition with 30 mol% of Zr at the B site i.e. BaC0.6Zr0.3Y0.1O3 -δ, the weight gain was about 2% under the same conditions as for 70 mol% of zirconia, up to 1250 ºC in pure CO2 [49]. In case of BZCYYb, when heated to 1200 C in pure CO2 with a heating/cooling rate of 10 o C/min, the weight gain was 7.7%.…”

Fabrication and Performance of Tubular, Electrode‐Supported BaCe0.2Zr0.7Y0.1O3–δ Fuel Cells

“…Doped barium zirconates are chemically stable but exhibit lower protonic conductivity. Solid solutions of barium cerate and barium zirconate, such as BaCe 0.2 Zr 0.7 Y 0.1 O 3-d (BCZY27), have been shown to exhibit high protonic conductivity and longterm stability [8][9][10][11].…”