Optimum dopant of barium zirconate electrolyte for manufacturing of protonic ceramic fuel cells

We examine ceramic tape-casting and anode electrolyte co-firing for large-scale manufacturing of protonic fuel cells. confirm the reactivity Ni, a commonly used anode, with BaZr0.8M0.2O3?? (BZM20: M = Sc, In, Lu, Yb, Y or Gd). Addition 0.4 mol% NiO to BZM20 at 1778 K, produces BaM2NiO5 Gd. No reaction occurs Lu Yb. The proton conductivity all BZM20s decreases by approximately 30% because doping dehydration on dissolution NiO. Energy efficiency power density calculations cells based measured hole conductivities indicate respective 10% 75% ecause formation solid solution fabricate (M Yb Y). For Y, cell cannot be fabricated BaY2NiO5 causes cracking. Conversely, when maximum output 0.5 Wcm?2 873 K is fabricated. Hence, BZYb20 suitable material co-firing.