Obtaining YSZ nanoparticles by the sol–gel method with sucrose and pectin as organic precursors

Sintering of 4YSZ (ZrO2 + 4mol% Y2O3) nanoceramics for solid oxide fuel cells (SOFCs), their structure and ionic conductivity

“…Some of the present authors have recently [19][20][21][22] introduced a new, cost-effective and environmentally friendly variant of the sol-gel method, and shown that this method can produce nano-size particles suitable for use in SOFC components. This work takes the next step of sintering these particles to electrolyte materials.…”

A simple sol–gel approach to synthesize nanocrystalline 8 mol% yttria stabilized zirconia from metal-chelate precursors: Microstructural evolution and conductivity studies

“…Further, ionic conductivity will also be improved due to increased grain boundaries in the sintered films. Another advantage of low temperature sinterability of nano-YSZ is the scope of co-sintering of SOFC components (anode, electrolyte and cathode) to fabricate cells in a single step thus reducing processing cost and processing time [9].…”

“…Similar route was followed by Chervin et al [18], to synthesize nanocrystalline YSZ with ZrCl 4 and YCl 3 .6H 2 O in aqueous epoxide solution. Suciu et al [9] used aqueous solutions of the same metal salts along with sucrose and pectin to chelate the metal ions. Addition of complexing agents is required in sol-gel route for controlling the hydrolysis and condensation rate of the zirconyl salts so that particle size and shape during the nucleation stage can be modified leading to 3D oxide network [19].…”

Dip-coating of 8YSZ nanopowder for SOFC applications

“…The organic precursors also function as internal fuel giving rise to homogeneous and weakly-agglomerated nanoparticles. In previous work by some of the present authors the effect of different synthesis parameters of the modified sol-gel method on the powder characteristics have been investigated for YSZ [32,33]. The sintering properties of the electrolyte pellets formed from YSZ nanopowder and the ionic conductivity of the resulting materials have been studied [31].…”