Fabrication and research on cone-shaped SOFCs by phase inversion technology

Abstract

Cone-shaped tubular anode substrates were prepared successfully by phase inversion technique. The effect of several kinds of organic additives on the microstructure development of NiO-YSZ anode support has been investigated. The scanning electron microscopy (SEM) results of NiO-YSZ anode supports show that the organic additives can greatly influence microstructure of the anode. Electrochemical testing shows that the single cell provides a maximum power output of 350mW/cm-2 at 800°C using PEG-1000 as additive. The correlation between the electrochemical performance of single cells and microstructure of the anodes had been analyzed in detail. In addition, a two-cell-stack was assembled by connecting cone-shaped anode-supported single cells in series. The chemical performance of the stack had also been tested.