부산대학교 도서관

The fast fabrication of high-quality anode layers of solid oxide fuel cells (SOFCs) is a key factor for their efficient applications. In this work, a one-step method of cathode plasma electrolytic deposition (CPED) is developed to prepare Ni doped YSZ coatings with a thickness of 35–55 μm on porous stainless steel. Compared to the several hours required by traditional methods, a faster coating deposition that only takes 60 s is achieved owing to the effect of enormous energy of plasma arc at the solid-liquid interface in the CPED method. The preparation process is analyzed by recording the variation of current with voltage. The unique micro-structure of the coatings is observed, and the formation mechanism of the Ni doped YSZ coating during the CPED process is proposed. The deposited coatings show an excellent performance as the anode layers for SOFCs, with Sc2O3 stabilized ZrO2 coating prepared by atmospheric plasma spraying as electrolyte and La0.6Sr0.4Co0.2Fe0.8O3-δ as the cathode. The open circuit voltage of the cells reaches 1.000 V and the maximum power density reaches 817.4 mW cm−2 at 800 °C. The finding opens a novel pathway for the efficient preparation of anode materials for SOFCs.