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Performance Factors and Sulfur Tolerance of Metal Supported Solid Oxide Fuel Cells with Nanostructured Ni:GDC Infiltrated Anodes

机译:具有纳米结构Ni:GDC渗透阳极的金属负载固体氧化物燃料电池的性能因素和耐硫性

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摘要

Two metal supported solid oxide fuel cells (active area 16 cm) with nanostructured Ni:GDC infiltrated anodes, but different anode and support microstructures were studied in respect to sulfur tolerance at the aimed operating temperature of 650ºC. The studied MS-SOFCs are based on ferretic stainless steel (FeCr) and showed excellent performance characteristics at 650ºC with area specific resistances (ASR) of 0.35 Ωcm and 0.7 Ωcm respectively. The sulfur tolerance testing was performed by addition/removal of 2, 5, and 10 ppm H2S in hydrogen based fuel under galvanostatic operation at a current load of 0.25Acm. The results were compared with literature on the sulfur tolerance of the conventional SOFC Ni/YSZ cermet anode. The comparison in terms of absolute cell resistance increase and relative anode polarization resistance increase indicate, that the nanostructured Ni:GDC MS-SOFC based anode is significantly more sulfur tolerant than the conventional Ni/YSZ cermet anode. © 2015 ECS - The Electrochemical Society
机译:研究了两种金属负载的固体氧化物燃料电池(有效面积16厘米),具有纳米结构的Ni:GDC渗透阳极,但是研究了在650ºC的目标工作温度下不同的阳极和载体微观结构对硫的耐受性。所研究的MS-SOFC基于铁素体不锈钢(FeCr),在650ºC时表现出出色的性能特征,面积比电阻(ASR)分别为0.35Ωcm和0.7Ωcm。通过在恒电流操作下在0.25Acm的电流恒流下在氢气基燃料中添加/去除2、5和10 ppm H2S来进行耐硫性测试。将结果与常规SOFC Ni / YSZ金属陶瓷阳极的耐硫性文献进行比较。就绝对电池电阻增加和相对阳极极化电阻增加而言的比较表明,基于纳米结构的Ni:GDC MS-SOFC的阳极比常规的Ni / YSZ金属陶瓷阳极具有更高的耐硫性。 ©2015 ECS-电化学学会

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