Effect of various sintering inhibitors on the long term performance of Ni-YSZ anodes used for SOFCs
作者： Muhammad Shirjeel Khan , Wandi Wahyudi , Seung-Bok Lee , Rak-Hyun Song , Jong-Won Lee
DOI: 10.1016/J.IJHYDENE.2015.04.145
关键词: Triple phase boundary 、 Anode 、 Composite material 、 Yttria-stabilized zirconia 、 Sintering 、 Electrochemistry 、 Solid oxide fuel cell 、 Electrolyte 、 Degradation (geology) 、 Materials science
摘要: Abstract Sintering of Ni in solid oxide fuel cell (SOFC) anodes (Ni-YSZ) is a major cause anode degradation. To reduce this growth rate, several sintering inhibitors (SiC, SiN, Al2O3, AlN, CeO2 and GDC) were added into Ni-YSZ using powder methods. The modified screen printed on YSZ electrolyte to prepare symmetric half-cells their performance was investigated by long term stability test at high temperature. X-ray diffraction (XRD) analysis showed that the most chemically compatible with materials except Al2O3 AlN. During test, area specific resistance (ASR) measured 1000 °C 25vol% H2 75vol% N2 environment. Triple phase boundary (TPB) density calculated image techniques before after operation. A clear relation found between ASR change rate determined from electrochemical measurements TPB analysis. Moreover, among various inhibitors, GDC exhibited best showing lowest rates. has been discussed view loss during
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