High-Performance Ni-SDC Cermet Anode for Solid Oxide Fuel Cells at Medium Operating Temperature

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Abstract
A samaria‐doped ceria composite powder produced by spray pyrolysis (SP) was employed as the anode material for medium‐temperature solid oxide fuel cells (SOFC). cermet electrodes were prepared with the expectation that their mixed conducting nature would enhance the electrode reaction rate and improve the operation efficiency of the SOFC. In this study, different microstructures were obtained by varying the sintering temperature from . The anodic polarization was strongly influenced by the microstructure of the anode. The lowest anode polarization of the samples sintered at for a current density of was about . This high performance seems to be due to the microstructure, in which particles form a skeleton with well‐connected SDC particles finely distributed over the particle surfaces. ©1998 The Electrochemical Society

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