Design of experiment approach applied to reducing and oxidizing tolerance of anode supported solid oxide fuel cell. Part II: Electrical, electrochemical and microstructural characterization of tape-cast cells

One of the major limitations of the nickel (Ni) - yttria-stabilized zirconia (YSZ) anode support for solid oxide fuel cells (SOFC) is its low capability to withstand transients between reducing and oxidizing atmospheres ("RedOx" cycle), owing to the Ni-to-NiO volume expansion. This work presents results on different anode supports fabricated by tape casting. Three compositions are prepared, as the outcome of a preceding design of experiment approach. The NiO proportion is 40, 50 and 60 wt% of the anode composite.

[1]  J. Wagner,et al.  In situ Reduction and Oxidation of Nickel from Solid Oxide Fuel Cells in a Transmission Electron Microscope , 2009 .

[2]  Vincenzo M. Sglavo,et al.  Effect of Al and Ce doping on the deformation upon sintering in sequential tape cast layers for solid oxide fuel cells , 2009 .

[3]  R. I. Taylor,et al.  The self-diffusion of Ni in NiO and its relevance to the oxidation of Ni , 1978 .

[4]  J. Van herle,et al.  Nickel–Zirconia Anode Degradation and Triple Phase Boundary Quantification from Microstructural Analysis , 2009 .

[5]  A. Mcevoy,et al.  Conductivity measurements of various yttria-stabilized zirconia samples , 1994, Journal of Materials Science.

[6]  Frank Tietz,et al.  Nickel coarsening in annealed Ni/8YSZ anode substrates for solid oxide fuel cells , 2000 .

[7]  Douglas G. Ivey,et al.  Electrochemical and microstructural characterization of the redox tolerance of solid oxide fuel cell anodes , 2005 .

[8]  A. Tsoga,et al.  Wettability and interfacial reactions in the systems NiYSZ and Ni/Ti-TiO2/YSZ , 1996 .

[9]  Daniel Favrat,et al.  Simulation of SOFC stack and repeat elements including interconnect degradation and anode reoxidation risk , 2006 .

[10]  G. Rietveld,et al.  Redox Tolerant SOFC Anodes with High Electrochemical Performance , 2009 .

[11]  N. Bonanos,et al.  Mechanical strength and electrical conductivity of Ni-YSZ cermets fabricated by viscous processing , 2006 .

[12]  Boris Iwanschitz,et al.  Fundamental mechanisms limiting solid oxide fuel cell durability , 2008 .

[13]  S. Rosenberg.  Nickel and Its Alloys , 1968 .

[14]  Marco Cannarozzo,et al.  Experimental and Theoretical Investigation of Degradation Mechanisms by Particle Coarsening in SOFC Electrodes , 2009 .

[15]  Jan Van herle,et al.  Design of experiment approach applied to reducing and oxidizing tolerance of anode supported solid o , 2011 .

[16]  Daniel Favrat,et al.  Modeling and Study of the Influence of Sealing on a Solid Oxide Fuel Cell , 2008 .

[17]  K. Thydén,et al.  Microstructural characterization of SOFC Ni–YSZ anode composites by low-voltage scanning electron microscopy , 2008 .

[18]  A. Atkinson,et al.  Changes in Physical and Mechanical Properties of SOFC Ni–YSZ Composites Caused by Redox Cycling , 2008 .

[19]  John Evans,et al.  PROPERTIES OF CERAMIC INJECTION-MOLDING FORMULATIONS .2. INTEGRITY OF MOLDINGS , 1987 .

[20]  A. Nakajo,et al.  RedOx study of anode-supported solid oxide fuel cell , 2009 .

[21]  Boris Iwanschitz,et al.  Degradation of SOFC Anodes upon Redox Cycling: A Comparison Between Ni/YSZ and Ni/CGO , 2010 .