In this work, nickel and gadolinium-doped ceria (GDC)-infiltrated lanthanum strontium titanate (LST) anodes are fabricated, and their electrode performances under a hydrogen atmosphere is investigated in terms of the Ni:GDC ratios and cell operating temperature. The Ni/GDC-infiltrated LST anode exhibits excellent electrode performance in comparison with the Ni- or GDC-infiltrated anodes, which is attributed to the synergistic effect of an extended triple-phase boundary length by GDC and good catalytic activity for hydrogen oxidation because of the Ni particles. The polarization resistances (R_p) of Ni/GDC-infiltrated LST are 0.07, 0.08, and 0.12 Ω cm² at 800, 750, and 700 °C, respectively, which are approximately three orders of magnitude lower than that of the LST anode (68.5 Ω cm² at 700 °C). The effect of Ni and GDC on the electrochemical performance of LST was also investigated by using electrochemical impedance spectroscopy (EIS). The anode polarization resistance (R_p) is confirmed to be dependent on the content and dispersion state (microstructure) of the Ni and GDC nanoparticles.

在这项工作中，制备了镍和c掺杂的二氧化铈（GDC）渗入的钛酸锶锶（LST）阳极，并根据Ni：GDC比和电池工作温度研究了它们在氢气氛下的电极性能。与渗入Ni / GDC的阳极相比，渗入Ni / GDC的LST阳极具有出色的电极性能，这归因于GDC延长了三相边界长度的协同作用，并且由于具有良好的氢氧化催化活性镍粒子。Ni / GDC渗透的LST的极化电阻（R _p）在800、750和700°C时分别为0.07、0.08和0.12Ωcm ²，比LST阳极的极化电阻低大约三个数量级。 （68.5Ω厘米²在700°C下）。还使用电化学阻抗谱（EIS）研究了Ni和GDC对LST电化学性能的影响。证实阳极极化电阻（R _p）取决于Ni和GDC纳米粒子的含量和分散状态（微观结构）。