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Effect of impurities on structural and electrochemical properties of the Ni-YSZ interface.

Jensen, K V ; Wallenberg, Reine LU ; Chorkendorff, I and Mogensen, M (2003) In Solid State Ionics 160(1-2). p.27-37
Abstract
The changes in interface structure and chemical composition of a 99.995% pure nickel/yttria-stabilised zirconia (YSZ) interface were examined after heat treatment at 1000 °C in 97% H2/3% H2O with and without polarisation. Impedance spectroscopy was used for electrochemical characterisation. The results were compared to earlier investigations of a less pure nickel/YSZ interface.



The pure interface developed different structures depending on whether or not the samples were polarised. Despite the purity of the nickel, impurities were found in the interfacial region. The pure electrodes/interfaces showed area specific polarisation resistances 10 times lower than the impure interfaces.
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author
; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Foreign phases, Polarisation resistance, Ni–YSZ interface, SOFC, Anode
in
Solid State Ionics
volume
160
issue
1-2
pages
27 - 37
publisher
Elsevier
external identifiers
  • wos:000183883000003
  • scopus:0038378951
ISSN
0167-2738
DOI
10.1016/S0167-2738(03)00147-4
language
English
LU publication?
yes
additional info
The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Polymer and Materials Chemistry (LTH) (011001041)
id
51ff11fe-fcbe-4f66-9196-182c34b777fc (old id 128402)
date added to LUP
2016-04-01 11:36:10
date last changed
2020-12-08 03:07:03
@article{51ff11fe-fcbe-4f66-9196-182c34b777fc,
  abstract     = {The changes in interface structure and chemical composition of a 99.995% pure nickel/yttria-stabilised zirconia (YSZ) interface were examined after heat treatment at 1000 °C in 97% H2/3% H2O with and without polarisation. Impedance spectroscopy was used for electrochemical characterisation. The results were compared to earlier investigations of a less pure nickel/YSZ interface.<br/><br>
<br/><br>
The pure interface developed different structures depending on whether or not the samples were polarised. Despite the purity of the nickel, impurities were found in the interfacial region. The pure electrodes/interfaces showed area specific polarisation resistances 10 times lower than the impure interfaces.},
  author       = {Jensen, K V and Wallenberg, Reine and Chorkendorff, I and Mogensen, M},
  issn         = {0167-2738},
  language     = {eng},
  number       = {1-2},
  pages        = {27--37},
  publisher    = {Elsevier},
  series       = {Solid State Ionics},
  title        = {Effect of impurities on structural and electrochemical properties of the Ni-YSZ interface.},
  url          = {http://dx.doi.org/10.1016/S0167-2738(03)00147-4},
  doi          = {10.1016/S0167-2738(03)00147-4},
  volume       = {160},
  year         = {2003},
}