Intermediate and low-temperature solid oxide fuel cells (SOFCs) operated below 800 °C have attracted tremendous interest for their low component cost, preferable chemical compatibility of the components and considerable stability. In this paper, a Ruddlesden–Popper oxide with the composition of Nd_1.8La_0.2Ni_0.74Cu_0.21Ga_0.05O_4+δ (NLNCG) is developed as a cathode for intermediate and low-temperature SOFCs. NLNCG exhibits good chemical compatibility with both protonic electrolyte (BaZr_0.1Ce_0.7Y_0.1Yb_0.1O_3−δ (BZCYYb)) and oxygen ionic electrolyte (Ce_0.9Gd_0.1O_2−δ (GDC)). Also, NLNCG can be applied as a cathode with low polarization resistance in both O-SOFCs based on GDC electrolyte and H-SOFCs based on BZCYYb electrolyte. In particular, the peak power density (PPD) of the cell NiO–BZCYYb|BZCYYb|NLNCG with an anode-supported configuration is 1.264 W cm⁻² and the polarization resistance is 0.045 Ω cm² at 800 °C. Therefore, NLNCG is a promising cathode for intermediate and low-temperature SOFCs.

中文翻译：

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用于质子传导和氧离子传导固体氧化物燃料电池的有前途的 Ruddlesden-Popper 氧化物阴极

在 800°C 以下运行的中低温固体氧化物燃料电池 (SOFC) 因其组件成本低、组件化学相容性好和稳定性高而引起了极大的兴趣。在本文中，开发了一种组成为 Nd _1.8 La _0.2 Ni _0.74 Cu _0.21 Ga _0.05 O _{4+ δ} (NLNCG) 的 Ruddlesden-Popper 氧化物作为中低温 SOFC 的阴极。NLNCG 与两种质子电解质（BaZr _0.1 Ce _0.7 Y _0.1 Yb _0.1 O _{3− δ}(BZCYYb)) 和氧离子电解质 (Ce _0.9 Gd _0.1 O _{2− δ} (GDC))。此外，NLNCG 可用作基于 GDC 电解质的 O-SOFC 和基于 BZCYYb 电解质的 H-SOFC 中的低极化电阻阴极。特别地，具有阳极支撑配置的电池NiO-BZCYYb|BZCYYb|NLNCG的峰值功率密度（PPD）为1.264 W cm ^-2，极化电阻在800°C时为0.045 Ω cm ^{2 。}因此，NLNCG 是一种很有前途的中低温 SOFC 正极。