Using numerical solutions of the Poisson-equation, one dimensional space charge layer (SCL) concentration profiles in CeO2 are calculated. The SCL conductivity effects of nanocrystalline CeO2 are analyzed as a function of doping content (donor doped, pure and acceptor doped ceria) and SCL potential including not only the standard Gouy-Chapman and Mott-Schottky cases, but also the more complex m...

Electrodeposition and characterization of novel ceria-doped Zn-Co composite coatings was the main goal this research. Electrodeposited were compared to pure obtained under same conditions. The effect two ceria sources, powder home-made sol, on morphology corrosion resistance determined. During electrodeposition process plating solution successfully agitated in an ultrasound bath. source particl...

Nanoscale superlattices of samarium-doped ceria layers with varying doping levels have been recently proposed as a novel fuel cell electrolyte. We calculate the equilibrium composition profile across the coherent {100} interfaces present in this system using lattice-gas Monte Carlo simulations with long-range interactions determined from electrostatics and short-range interactions obtained from...

Decreasing the dimensions of ionic conductors to the nanoscale has enabled the realization of new electrochemical devices integrated on Si-based and other microsystems. These comprise fast ionic conducting electrolytes for energy-applications such as micro-fuel cells [ 1,2 ] and batteries, [ 3 ] gas conversion/reformation catalysts, [ 4,5 ] sensors, [ 6 ] and for redox-reaction based resistive ...

An 8 nm-thick gadolinium-doped ceria (GDC) layer was inserted as a cathodic interlayer between the nanoscale proton-conducting yttrium-doped barium zirconate (BZY) electrolyte and the porous platinum cathode of a micro-solid oxide fuel cell (μ-SOFC), which has effectively improved the cathode reaction kinetics and rendered high cell power density. The addition of the GDC interlayer significantl...

Novel NiO/GDC (Gadolinium-doped Ceria) cermet catalysts were developed by the Weak Acid Resin (WAR) method using an ion exchange resin template. In addition, the specific surface area of these tunable materials was enhanced by NiO partial dissolution in aqueous acid solution. The whole procedure highly improved the micro-structural properties of these materials compared to previous studies. Cat...

Effect of dopant on structural and electrical properties samarium-doped ceria (SDC) electrolyte was investigated using statistical moment method. Our results showed the lattice expansion due to doping local distortion resulting from preferential distribution oxygen vacancies around dopants. The ionic conductivity SDC crystals is in more than three orders magnitude larger that pure ceria. Howeve...