SOFC-anodes, proof for a finite-lenght type Gerischer impedance?

Bernard A. Boukamp; M. Verbraeken; David H.A. Blank; P. Holtappels

doi:10.1016/j.ssi.2006.03.002

SOFC-anodes, proof for a finite-lenght type Gerischer impedance?

Bernard A. Boukamp, M. Verbraeken, David H.A. Blank, P. Holtappels

Research output: Contribution to journal › Article › Academic › peer-review

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Abstract

The impedance of a symmetric cell with Ni/Ti-doped YSZ cermet anodes was measured as function of ambient (PH2, PH2O) and temperature. The impedances showed identical shapes with a minor dispersive contribution in the high frequency region and a dominating dispersion down to 0.01 Hz. The characteristic shape of this dispersion was clearly in between a finite-length Warburg (FLW) and a Gerischer impedance. Analysis of the dispersion in the Bode representation, after subtraction of the high frequency contribution, showed a clear relation with the Gerischer impedance. Assuming a finite-length constraint led to quite reasonable modelling of the data. The parameter set of this finite-length Gerischer showed a consistent dependence on PH2, PH2O. A qualitative interpretation of this modified Gerischer is presented

Original language	Undefined
Pages (from-to)	2539-2541
Number of pages	4
Journal	Solid state ionics
Volume	177
DOIs	https://doi.org/10.1016/j.ssi.2006.03.002
Publication status	Published - 2006

Keywords

METIS-235028
IR-59212

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This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.ssi.2006.03.002

Cite this

@article{ef6dbae6cd024b18840852ee4d181040,

title = "SOFC-anodes, proof for a finite-lenght type Gerischer impedance?",

abstract = "The impedance of a symmetric cell with Ni/Ti-doped YSZ cermet anodes was measured as function of ambient (PH2, PH2O) and temperature. The impedances showed identical shapes with a minor dispersive contribution in the high frequency region and a dominating dispersion down to 0.01 Hz. The characteristic shape of this dispersion was clearly in between a finite-length Warburg (FLW) and a Gerischer impedance. Analysis of the dispersion in the Bode representation, after subtraction of the high frequency contribution, showed a clear relation with the Gerischer impedance. Assuming a finite-length constraint led to quite reasonable modelling of the data. The parameter set of this finite-length Gerischer showed a consistent dependence on PH2, PH2O. A qualitative interpretation of this modified Gerischer is presented",

keywords = "METIS-235028, IR-59212",

author = "Boukamp, {Bernard A.} and M. Verbraeken and Blank, {David H.A.} and P. Holtappels",

year = "2006",

doi = "10.1016/j.ssi.2006.03.002",

language = "Undefined",

volume = "177",

pages = "2539--2541",

journal = "Solid state ionics",