Medium Temperature Solid Oxide Fuel Cells Based on Supporting Porous Anode and Bilayered Electrolyte

摘要

Solid oxide fuel cell single cells based on Ni-Ce_(0.9)Gd_(0.1)O_(2-δ) or Ni-Zr_(0.92)Y_(0.08)O_(2-δ) supporting anodes, bi-layered Zr_(0.92)Y_(0.08)O_(2-δ)| Ce_(0.9)Gd_(0.1)O_(2-δ)or Zr_(0.9)Sc_(0.1)O_(2-δ)|Ce_(0.9)Gd_(0-1)O_(2-δ) electrolytes and micro-meso-porous La_(0.6)Sr_(0.4)CoO_(3-δ), La_(0.6)Sr_(0.4)CoO_(3-δ) or La_(0.6)Sr_(0.4)CoO_(3-δ)cathodes prepared from nano-micro-powders at different sintering temperatures and pore former additions in the raw cathode and anode pastes have been studied using XRD, FIB-SEM, AFM, BET, cyclic voltammetry, chronoamperometry and electrochemical impedance methods. Influence of the anode and cathode porosity, depending on the electrode preparation methods, and also of the bi-layered electrolyte properties (chemical composition, thickness, etc.) on the power density of the single ceils has been shown and discussed.