The electrochemical characteristics of electrolyte-supported solid oxide fuel cells containing pure perovskite anode of La_0.3Y_0.1Sr_0.4TiO₃−_δ, (LYST_A-) and composite anodes with varying fractions (30 and 50 wt%) of yttria-stabilized zirconia (YSZ), LYST_A- (30)YSZ and LYST_A- (50)YSZ, were studied in humidified methane. The 8 wt% CeO₂ and 4 wt% NiO, denoted as (84), were impregnated into the pure and composite anodes for efficient electrooxidation of methane. The studies were carried out to qualitatively estimate the kinetic parameter, exchange current density (i_o), for methane electrooxidation. Evaluation in a 3-electrode configuration with an asymmetric reference electrode yielded the following activity trend: (84)LYST_A- > (84)LYST_A- (30)YSZ > (84)LYST_A- (50)YSZ in the high-overpotential region, with i_o values of 133.2 ± 32.5, 40.8 ± 16.6, and 47.9 ± 16.3 mA cm⁻² at 900 °C, respectively. The presence of YSZ in the composite anodes leads to decrease in i_o and degrading performance. Impedance studies clubbed with equivalent circuit modeling along with physical characterization were used to account for decreased i_o values in composite anodes. Metal support interactions arising between Ni and CeO₂ are studied using a high-resolution transmission electron microscope. Solid oxide fuel cell (SOFC) studies with (84)LYST_A- anode yielded a maximum power density of 591 mW cm⁻² in hydrogen and 429 mW cm⁻² in methane.

含La _0.3 Y _0.1 Sr _0.4 TiO ₃ - _δ的纯钙钛矿阳极（LYST _A-）和氧化钇稳定的氧化锆的不同比例（30和50 wt％）的复合阳极的电解质支持的固体氧化物燃料电池的电化学特性在潮湿的甲烷中研究了（YSZ），LYST _A-（30）YSZ和LYST _A-（50）YSZ。将8 wt％的CeO ₂和4 wt％的NiO（表示为（84））浸渍到纯阳极和复合阳极中，以实现甲烷的有效电氧化。进行研究以定性估计动力学参数，交换电流密度（i _o），用于甲烷电氧化。在具有不对称参比电极的3电极配置中进行评估得出以下活性趋势：（84）LYST _A-  >（84）LYST _A-（30）YSZ>（84）LYST _A-（50）YSZ超电势区域，与我_ö的133.2±32.5的值，40.8±16.6和47.9±16.3毫安厘米^-2，在900℃下，分别。复合阳极中YSZ的存在会导致I _o降低和性能下降。与等效电路模型结合的阻抗研究以及物理特性被用于说明降低的I _o复合阳极中的数值。使用高分辨率透射电子显微镜研究了Ni和CeO ₂之间的金属载体相互作用。使用（84）LYST _A-阳极进行的固体氧化物燃料电池（SOFC）研究在氢气中产生的最大功率密度为591 mW cm ^-2，在甲烷中产生的最大功率密度为429 mW cm ^-2。