Continuous Hydrothermal Flow Syntheses of Nanosize Materials Used In Solid Oxide Fuel Cells
Clean Technology 2008

Continuous Hydrothermal Flow Syntheses of Nanosize Materials Used In Solid Oxide Fuel Cells

X. Weng, J.A. Darr
University College London, UK

Keywords:
La-Ni-O series, Supercritical water, Solid oxide fuel cell, Yttria stabilized zirconia, nickel/YSZ cermets

Abstract:
Our research group has developed a novel nanomaterials synthesis method using a continuous hydrothermal flow synthesis (CHFS) reactor. In this reactor, nanosize particles are produced through co-precipitation in supercritical water. Sub 50 nm sized particles were successfully synthesized, including yttira stabilized zirconia (YSZ, electrolyte in SOFCs), Ni/YSZ cermets (anode) and lanthanum nickelate nanomaterials (cathode). These materials were rapidly and efficiently made via CHFS method and reveal remarkable improvements in the electron/ion conducting properties. The results obtained herein is further evidenced the La4Ni3O10 compound as a more promising cathode candidate used in the intermediate-temperature SOFCs and indicate the advantage use of nano technology in energy generation.