Electrospinning of Pr 2 CuO 4 Fiber and its Cathode Application in Solid Oxide Fuel Cell

In this study, Pr2CuO4 was fabricated as a cathode material for intermediate-temperature solid oxide fuel cells (IT-SOFCs) application. The Pr2CuO4 cathode was prepared using a solid-state reaction and an electrospinning technique. The prepared cathode material was characterized by the suitable characterization technique. The Pr2CuO4 was coated on a Sm0.2Ce0.8O1.9 (SDC20) pellet with a doctor blades to form a half-cell (Ag/Pr2CuO4/SDC20/Ag). The Pr2CuO4 cathode prepared using electrospinning method demonstrated an excellent cathode performance in electrochemical measurements. The fiber morphologies of the cathode induced large amounts of triple phase boundaries, which promoted oxygen diffusion on the surface. The lowest area-specific resistance obtained with the Pr2CuO4 fiber was determined to be 0.35 Ω cm2 at 800°C in air. The electrospinning prepared Pr2CuO4 fiber is a potential cathode material for IT-SOFCs.