Intermediate temperature fuel cell durability of Eu-doped SrCeO3-SrZrO3 solid solution/ NaCl-KCl composite electrolyte. Issue 18 (15th December 2017) - Shi, Ruijuan
Abstract: A SrCe0.7 Zr0.2 Eu0.1 O3-α (SCZE-SG) electrolyte was successfully fabricated by a sol-gel method using Eu2 O3, Sr(C2 H3 O2 )2 2 O, (NH4 )2 Ce(NO3 )6 and Zr(NO3 )4 ·5H2 O as raw materials and was subsequently reacted with NaCl/KCl. The obtained materials were characterized by XRD and SEM techniques. XRD results showed that SCZE-SG and NaCl/KCl did not chemically react. The SEM images revealed that the particle size of SCZE-SG is uniform, and NaCl/KCl is coated on the surface of SCZE-SG, acting as a binder in SrCe0.7 Zr0.2 Eu0.1 O3-α -NaCl-KCl (SCZE-SG-NK). The oxide ion and protonic conduction of SCZE-SG was studied using gas concentration cells, and the results indicate that the durability of the fuel cell based on SCZE-SG-NK exhibits excellent cell performance with a maximum power output density of approximately 0.58 W cm −2 during a 40-h operation at 700 °C.