Nanocrystalline 10mol% yttria-stabilized zirconia electrolyte was synthesized

using the plasma spray technique. The ionic conductivity was measured using AC

impedance spectroscopy at 350 to 600C in air. The measured total ionic

conductivity of plasma-sprayed electrolyte was some 2.3 times higher than that of

sintered electrolyte at 600C in air. The improvement in ionic conductivity was

ascribed to the nanocrystalline grain size and siliceous free grain boundary with

grain-to-grain contact.

Ionic Conductivity of Plasma-Sprayed Nanocrystalline Yttria-Stabilized Zirconia

Electrolyte for Solid Oxide Fuel Cells. Y.Chen, S.Omar, A.K.Keshri, K.Balani,

K.Babu, J.C.Nino, S.Seal, A.Agarwal: Scripta Materialia, 2009, 60[11], 1023-6