This study examines the electrochemical properties of a fibrous composite cathode for protonic ceramic fuel cells (PCFC). Sm_0.5Sr_0.5CoO_3-δ (SSC) fibers having embedded BaCe_0.5Zr_0.35Y_0.15O_3-δ (BCZY) particles were fabricated using the electro-spinning process. The BCZY powders were prepared using the conventional citrate-nitrate method. It was subsequently mixed with an SSC solution comprising polyvinylpyrrolidone and aqueous metal nitrate. By electro-spinning the obtained mixture, continuous and longish fibers were obtained, yielding a fiber diameter of 150–200 nm after calcination. The calcined composite nanofibers were deposited via the electrostatic slurry spray deposition technique as a cathode layer on a half-cell comprising NiO and BCZY. According to the results of the single-cell measurement, the fibrous composite cathode exhibited much higher electrochemical properties than a typical nanocomposite cathode over the entire operating temperature range of 550–700 °C. Specifically, the polarization resistance of the fibrous composite cathodes was 0.186 Ω·cm² at 700 °C, lower than that of a typical nanocomposite cathode. In accordance with the impedance analysis, the maximum power density given by the I–V curve was 642 mW/cm² at 700 °C, which is regarded as reasonable performance for PCFCs.

这项研究检查了质子陶瓷燃料电池（PCFC）的纤维复合阴极的电化学性能。嵌入BaCe _0.5 Zr _0.35 Y _0.15 O3 _-δ的Sm _0.5 Sr _0.5 CoO3 _-δ（SSC）纤维（BCZY）粒子是使用电纺丝工艺制造的。BCZY粉末使用常规的柠檬酸盐-硝酸盐方法制备。随后将其与包含聚乙烯吡咯烷酮和含水金属硝酸盐的SSC溶液混合。通过电纺制所得混合物，获得连续且长纤维，煅烧后纤维直径为150-200 nm。通过静电浆料喷涂沉积技术将煅烧的复合纳米纤维沉积为包含NiO和BCZY的半电池上的阴极层。根据单电池测量的结果，在550-700°C的整个工作温度范围内，纤维复合阴极比典型的纳米复合阴极具有更高的电化学性能。具体地，纤维复合阴极的极化电阻在700℃下为0.186Ω·cm ²，低于典型的纳米复合阴极的极化电阻。根据阻抗分析，IV曲线给出的最大功率密度在700°C时为642 mW / cm ²，这被认为是PCFC的合理性能。