A Support Structure with Gradient Pores Used for Solid Oxide Electrolysis Cell

作者：Wang Xue; Yu Bo^*; Zhang Wenqiang; Chen Jing

来源：Rare Metal Materials and Engineering, 2013, 42: 717-719.

• solid oxide electrolysis cell
• freeze casting
• gradient structure

Three-phase boundary length and gas diffusion characteristics significantly influence the performance of solid oxide electrolysis cell (SOEC) Supporting structure of gradient pores can not only increase the three-phase boundary length but also improve the gas diffusion characteristics which helps reducing the polarization impedance of SOEC and elevating electrolysis performance. 8YSZ (8 mol % Yttria stabilised Zirconia power), the mature electrolyte material, and freeze casting process were used to prepare a supporting structure with gradient pores used for solid oxide electrolysis cell(SOEC). Optimized conditions such as solid content, frozen temperature, dispersing agent and binder etc were investigated. Scanning electron microscope (SEM) was applied to characterize microstructure of the support plate prepared. The results indicate that the solid content is a determinant factor affecting plate intensity and pore size while the microstructure depends on frozen temperature.

• 出版日期2013-6
• 单位清华大学