Yb-Doped BaCeO3 and Its Composite Electrolyte for Intermediate-Temperature Solid Oxide Fuel Cells

Abstract

BaCe0.9Yb0.1O3−α was prepared via the sol-gel method using zirconium nitrate, ytterbium trioxide, cerium nitrate and barium acetate as raw materials. Subsequently, it reacted with the binary NaCl~KCl salt to obtain BaCe0.9Yb0.1O3−α-NaCl~KCl composite electrolyte. The structure, morphology, conductivity and fuel cell performance of the obtained samples were investigated. Scanning electron microscope (SEM) images showed that BaCe0.9Yb0.1O3−α and NaCl~KCl combined with each other to form a homogeneous 3-D reticulated structure. The highest power density and conductivity of BaCe0.9Yb0.1O3−α-NaCl~KCl was 393 mW·cm−2 and 3.0 × 10−1 S·cm−1 at 700 °C, respectively.

A review of sodium chloride-based electrolytes and materials for electrochemical energy technology

“…Recently, the strategies of NaCl solution directly as an electrolyte and additive to optimize the existing electrolyte provide novel ideas for the development of high-performance and low-cost electrolytes. So far, besides the use of NaCl electrolyte solution in chloro-alkali electrolysis, the related NaCl-based electrolytes are mainly reported in supercapacitors, [102][103][104] fuel cells, [105][106][107] metal-air batteries (such as the Mg-air battery, Zn-air battery, Zn-air battery), [108][109][110][111] hydrogen production of water splitting, [19][20][21][22][23][24][25][26][27][28][29][30][31][32][33] and electrochemical desalination. [34][35][36][37][38][39][40]…”

The Main Relationships of the Main Parameters of the Proton Conducting SOFC

“…Proton-conducting materials constitute a class of oxide compounds possessing the required properties for application as electrolytes for low and intermediate temperature SOFCs [1][2]. However, ionic conduction is caused by both oxygen ion and proton transport with a prevailing character of the latter [3].…”

Evaluation of BaCo0.4Fe0.4Zr0.2−xNixO3−δ perovskite cathode using nickel as a sintering aid for IT-SOFC

“…Peak shiing is also observed, which can be attributed to the shrinkage of lattice parameter, decreased unit cell volume, and trapping effects of charges between host Zr 4+ and nickel dopant. 40 The shiing of peaks can also be related to the structural disorder and stresses that are produced due to the difference in ionic radii dopant Ni and host Zr 4+ , therefore, resulting in displacement and tilting of zirconium oxide structure. 41 Stability and structure disorder are inversely proportional to each other.…”