Performance-Microstructure Relations in Ni/CGO Infiltrated Nb-doped SrTiO3 SOFC Anodes

Publication: Research - peer-reviewConference article – Annual report year: 2012

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@article{d4ae92a7200f464d933b45af98aabb5f,
title = "Performance-Microstructure Relations in Ni/CGO Infiltrated Nb-doped SrTiO3 SOFC Anodes",
publisher = "Electrochemical Society, Inc.",
author = "Tania Ramos and Carlos Bernuy-Lopez and {Reddy Sudireddy}, Bhaskar and Bentzen, {Janet Jonna} and Wei Zhang and Jørgensen, {Peter Stanley} and Kuhn, {Luise Theil}",
year = "2012",
doi = "10.1149/1.3701330",
volume = "45",
number = "1",
pages = "389--402",
journal = "E C S Transactions",
issn = "1938-5862",

}

RIS

TY - CONF

T1 - Performance-Microstructure Relations in Ni/CGO Infiltrated Nb-doped SrTiO3 SOFC Anodes

A1 - Ramos,Tania

A1 - Bernuy-Lopez,Carlos

A1 - Reddy Sudireddy,Bhaskar

A1 - Bentzen,Janet Jonna

A1 - Zhang,Wei

A1 - Jørgensen,Peter Stanley

A1 - Kuhn,Luise Theil

AU - Ramos,Tania

AU - Bernuy-Lopez,Carlos

AU - Reddy Sudireddy,Bhaskar

AU - Bentzen,Janet Jonna

AU - Zhang,Wei

AU - Jørgensen,Peter Stanley

AU - Kuhn,Luise Theil

PB - Electrochemical Society, Inc.

PY - 2012

Y1 - 2012

N2 - Nb-doped SrTiO3 solid oxide fuel cell (SOFC) anodes, infiltrated with CGO/Ni, were investigated by electrochemical impedance spectroscopy (EIS) and high resolution microscopy techniques, upon varying production and testing parameters. The electrochemical analysis involved a combination of distribution of relaxation times (DRT) and complex non-linear least squares (CNLS) fitting routine. These electrodes were studied as singlephase or as composites with 8YSZ. Sr0.94Ti0.9Nb0.1O3-δ/ 10 vol.% 8YSZ composite infiltrated electrodes were the best overall performers, with enhanced performance stability under higher steam contents. Combined DRT/CNLS showed the existence of at least three contributing processes to the total polarisation resistance (Rp) of these electrodes. Microstructural changes involving infiltrate growth and redistribution were also confirmed.

AB - Nb-doped SrTiO3 solid oxide fuel cell (SOFC) anodes, infiltrated with CGO/Ni, were investigated by electrochemical impedance spectroscopy (EIS) and high resolution microscopy techniques, upon varying production and testing parameters. The electrochemical analysis involved a combination of distribution of relaxation times (DRT) and complex non-linear least squares (CNLS) fitting routine. These electrodes were studied as singlephase or as composites with 8YSZ. Sr0.94Ti0.9Nb0.1O3-δ/ 10 vol.% 8YSZ composite infiltrated electrodes were the best overall performers, with enhanced performance stability under higher steam contents. Combined DRT/CNLS showed the existence of at least three contributing processes to the total polarisation resistance (Rp) of these electrodes. Microstructural changes involving infiltrate growth and redistribution were also confirmed.

U2 - 10.1149/1.3701330

DO - 10.1149/1.3701330

JO - E C S Transactions

JF - E C S Transactions

SN - 1938-5862

IS - 1

VL - 45

SP - 389

EP - 402

ER -