DESIGN AND SYNTHESIS OF METALLIC NANOPARTICLE-CERAMIC SUPPORT INTERFACES FOR ENHANCING THERMAL STABILITY

摘要

Nickel based catalysts yield important electrochemical benchmarks in high temperature solid oxide electrochemistry. While fine metal nanoparticles are achieved by solution precursor infiltration, rapid coarsening of high surface area nanoparticles readily degrades both catalysis and percolation. The stabilization of fine scale nickel particulate at high temperatures provides an opportunity to enhance the performance and operational temperatures of non-noble metals. The application Al2TiO5 to bind nickel particles to zirconia supports was investigated to establish a methodology for improving thermal stability. The decomposition of Al2TiO5 and chemical interaction with nickel/zirconia components may provide a viable mechanism. Transmission electron microscopy was utilized to investigate me morphology by which the Al2TiO5 induced chemical phases that bind me nickel metal to the support. Further, behavior of anchored nickel catalysts in electrochemical cells will be reported.