Fibrous Ba_0.5Sr_0.5Co_0.8Fe_0.2O_3−δ-Gd_0.1Ce_0.9O_1.95 (BSCF-GDC) composite cathodes are fabricated by a facile electrospinning method. However, the electropun BSCF-GDC cathode shows poor adhesion to a GDC electrolyte because of the high shrinkage rate of the electrospun BSCF-GDC cathode during sintering. To solve this adhesion issue, mixed BSCF fiber-GDC powder cathode is investigated. As a result, mixed BSCF fiber-GDC powder cathode with an enhanced adhesion is successfully fabricated. This improvement can be attributed to the modified microstructure with the GDC powder that joins the BSCF fibers to the GDC electrolyte at the cathode and electrolyte interface. The polarization resistance of the mixed BSCF fiber-GDC powder cathode is 0.10 Ω cm², which is lower than 0.13 Ω cm² of conventional BSCF-GDC powder cathode at 700 °C. It is attributable to the improved oxygen gas and lattice oxygen diffusion, and the surface exchange of the mixed BSCF fiber-GDC powder cathode. The single cell with a mixed BSCF fiber-GDC powder cathode show 500 mW cm⁻² at 700 °C, which is 25% higher than conventional BSCF-GDC powder cathode.

纤维Ba _0.5 Sr _0.5 Co _0.8 Fe _0.2 O _3−δ -Gd _0.1 Ce _0.9 O _1.95（BSCF-GDC）复合阴极是通过一种简便的静电纺丝方法制造的。然而，由于电纺BSCF-GDC阴极在烧结期间的高收缩率，因此电纺BSCF-GDC阴极显示出对GDC电解质的差的粘附性。为了解决该粘附问题，研究了混合的BSCF纤维-GDC粉末阴极。结果，成功地制造了具有增强的粘附性的混合BSCF纤维-GDC粉末阴极。这种改进可以归因于GDC粉末的改进的微观结构，该粉末在阴极和电解质界面将BSCF纤维连接到GDC电解质。混合BSCF纤维-GDC粉末阴极的极化电阻为0.10Ωcm ²，低于0.13Ωcm ²常规BSCF-GDC粉末阴极在700°C下的温度。这归因于改进的氧气和晶格氧扩散，以及混合的BSCF纤维-GDC粉末阴极的表面交换。具有混合BSCF纤维-GDC粉末阴极的单电池在700°C下显示500 mW cm ^-2，比常规BSCF-GDC粉末阴极高25％。