Increasing the stability of perovskite proton conductor against atmospheric CO₂ and moisture attack at ambient conditions might be equally important as that at the elevated service temperatures. It can ease the transportation and storage of materials, potentially reducing the maintenance cost of the integral devices. In this work, we initially examined the surface degradation behaviors of various Zr-doped barium cerates (BaCe_0.7Zr_0.1Y_0.1Me_0.1O₃) using XRD, SEM, STEM and electron energy loss spectroscopy. Though that the typical lanthanide (Y, Yb and Gd) and In incorporated Zr-doped cerates well resisted CO₂-induced carbonation in air at elevated temperatures, they were unfortunately vulnerable at ambient conditions, suffering slow decompositions at the surface. Conversely, Sn doped samples (BCZYSn) were robust at both conditions yet showed high protonic conductivity. Thanks to that, the anode supported solid oxide fuel cells equipped with BCZYSn electrolyte delivered a maximum power density of 387 mW cm⁻² at 600 °C in simulated coal-derived syngas. In the hydrogen permeation test using BCZYSn based membrane, the H₂ flux reached 0.11 mL cm⁻² min⁻¹ at 850 °C when syngas was the feedstock. Both devices demonstrated excellent stability in the presence of CO₂ in the syngas.

在环境条件下，增加钙钛矿质子导体对大气中CO ₂的稳定性和防潮性与在高温下使用同样重要。它可以简化材料的运输和存储，潜在地减少了集成设备的维护成本。在这项工作中，我们最初使用XRD，SEM，STEM和电子能量损失光谱技术研究了各种掺Zr的钡铈酸盐（BaCe _0.7 Zr _0.1 Y _0.1 Me _0.1 O ₃）的表面降解行为。尽管典型的镧系元素（Y，Yb和Gd）和掺In的Zr掺杂的铈酸盐具有良好的CO ₂抵抗力由于在高温下在空气中引起碳化，不幸的是它们在环境条件下易受伤害，表面缓慢分解。相反，Sn掺杂样品（BCZYSn）在两种条件下均很坚固，但显示出高质子传导性。因此，配备有BCZYSn电解质的阳极支撑固体氧化物燃料电池在模拟煤衍生的合成气中，在600°C时的最大功率密度为387 mW cm ^-2。在使用基于BCZYSn的膜的氢渗透测试中，当以合成气为原料时，H ₂通量在850℃下达到0.11mL cm ^-2  min ^-1。在合成气中存在CO _2时，这两种设备均表现出出色的稳定性。