In this study, La_0.8Sr_0.2MnO₃ (LSM) was used as the ceramic electrode in a (Bi_1.50Y_0.50)_0.98Zr_0.04O_3+δ (BYO)-based solid electrolyte oxygen generator (SEOG) and its performance was compared with that of a previously studied high-fire Ag electrode. Among La_0.6Sr_0.4Co_0.2Fe_0.8O₃, LaNi_0.6Fe_0.4O₃, Cu_1.4Mn_1.6O₄, and LSM materials, only LSM materials did not trigger any chemical reaction or interdiffusion with BYO at temperatures up to 900 °C. Two cell designs, Cell A, with a Bi_1.71Nb_0.25Ba_0.04O_3+δ (BBNO) interlayer and high-fire Ag electrode, and Cell B, with an LSM-BYO composite electrode, were obtained in this study. The cells were sandwiched between two modular SUS 316 planar interconnects using a ZnO–SiO₂–Al₂O₃ glass sealant to form the SEOG device. Although Cells A and B possessed similar ohmic resistance (R_o) values, the polarization resistance (R_p) values of Cell A were 3.6 times larger than those of Cell B. Furthermore, the stability study of the cells operated at 600 °C for 12 h revealed that R_o increased from 0.79 to 3.17 Ω cm² and R_p from 3.12 to 12.58 Ω cm² for the Cell A, while R_o increased from 0.76 to 0.77 Ω cm² and R_p from 0.87 to 1.12 Ω cm² for the Cell B. Therefore, minor variations in the R_o and R_p of Cell B indicate the excellent stability of the electrode. The degradation of Cell A was caused by the migration of Ag and formation of voids and cracks adjacent to the anode/electrolyte interface under the DC field. Furthermore, the Cell A experienced a decrease in faradaic efficiency for current densities greater than 0.20 A cm⁻² owing to the partial decomposition of BYO at the cathode. In contrast, the Cell B generated an oxygen flux of 1.29 cm⋅min⁻¹ at 600 °C. In addition, the faradaic efficiency of Cell B remained consistent for current densities up to 0.35 A cm⁻². Therefore, the SEOG using LSM-BYO as the cell electrode exhibited excellent stability and electrochemical performance.

在本研究中，La _0.8 Sr _0.2 MnO ₃ (LSM) 用作 (Bi _1.50 Y _0.50 ) _0.98 Zr _0.04 O _3+δ (BYO) 基固体电解质氧气发生器 (SEOG) 中的陶瓷电极，其性能为与先前研究的高火银电极相比。其中 La _0.6 Sr _0.4 Co _0.2 Fe _0.8 O ₃、LaNi _0.6 Fe _0.4 O ₃、Cu _1.4 Mn _1.6 O ₄和 LSM 材料，只有 LSM 材料在高达 900 °C 的温度下不会引发任何化学反应或与 BYO 的相互扩散。本研究获得了两种电池设计，电池 A，具有 Bi _1.71 Nb _0.25 Ba _0.04 O _3+δ (BBNO) 夹层和高火 Ag 电极，以及电池 B，具有 LSM-BYO 复合电极。使用 ZnO-SiO ₂ -Al ₂ O ₃玻璃密封剂将电池夹在两个模块化 SUS 316 平面互连之间以形成 SEOG 设备。尽管电池 A 和电池 B 具有相似的欧姆电阻 (R _o ) 值，但极化电阻 (R _p) 电池 A 的值是电池 B 的 3.6 倍。此外，电池在 600 °C 下运行 12 小时的稳定性研究表明，R _o从 0.79 增加到 3.17 Ω cm ²，R _p从 3.12 增加到 12.58电池 A 的Ω cm ²，而电池 B 的 R _o从 0.76 Ω cm ²增加到 0.77 Ω cm ²，R _p从 0.87 增加到 1.12 Ω cm ^2。因此，R _o和 R _{p 的}微小变化电池 B 表明电极具有优异的稳定性。电池 A 的退化是由银的迁移以及在直流电场下阳极/电解质界面附近形成空隙和裂缝引起的。此外，由于 BYO 在阴极部分分解，电池 A 在电流密度大于 0.20 A cm ^{-2 时}法拉第效率下降。相比之下，电池 B在 600 °C 下产生了 1.29 cm⋅min ^-1的氧通量。此外，对于高达 0.35 A cm ^{-2 的}电流密度，电池 B 的法拉第效率保持一致。因此，使用 LSM-BYO 作为电池电极的 SEOG 表现出优异的稳定性和电化学性能。