Preparation of Nano-Structured La_0.6Sr_0.4Co_0.2Fe_0.8O_3−δ Cathode for Protonic Ceramic Fuel Cell by Bead-Milling Method

Abstract

Nano-structured La_0.6Sr_0.4Co_0.2Fe_0.8O_3−δ (LSCF6428) cathode for protonic ceramic fuel cell (PCFC) prepared from planetary bead-milled nanoparticles was investigated. The cathode made by the bead-milled particles showed a porous structure consisting of homogeneous size particles and pores in the range 100 nm. The PCFC comprised of this cathode, Ni anode and BaCe_0.6Zr_0.2Y_0.2O_3−δ (BCZY622) electrolyte increased the cell performances about 6 times that of the cell using the cathode without milling. The cathode preparation using bead-milling is effective in improving the cell performance with an expanded contact area of the cathode/electrolyte interface due to decreasing particle size and good adhesion of the particles to the electrolyte.