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In situ time-of-flight neutron imaging of NiO-YSZ anode support reduction under influence of stress

Makowska, Malgorzata G.; Strobl, Markus LU ; Lauridsen, Erik M.; Kabra, Saurabh; Kockelmann, Winfried; Tremsin, Anton; Frandsen, Henrik L. and Theil Kuhn, Luise (2016) In Journal of Applied Crystallography 49(5). p.1674-1681
Abstract

This article reports on in situ macroscopic scale imaging of NiO-YSZ (YSZ is yttria-stabilized zirconia) reduction under applied stress - a phase transition taking place in solid oxide electrochemical cells in a reducing atmosphere of a hydrogen/nitrogen mixture and at operation temperatures of up to 1073K. This process is critical for the performance and lifetime of the cells. Energy-resolved neutron imaging was applied to observe the phase transition directly with time and spatial resolution. Two different approaches are presented for using this imaging technique for the investigation of chemical and physical processes requiring controlled atmosphere and elevated temperature. The first type of measurement is based on alternating... (More)

This article reports on in situ macroscopic scale imaging of NiO-YSZ (YSZ is yttria-stabilized zirconia) reduction under applied stress - a phase transition taking place in solid oxide electrochemical cells in a reducing atmosphere of a hydrogen/nitrogen mixture and at operation temperatures of up to 1073K. This process is critical for the performance and lifetime of the cells. Energy-resolved neutron imaging was applied to observe the phase transition directly with time and spatial resolution. Two different approaches are presented for using this imaging technique for the investigation of chemical and physical processes requiring controlled atmosphere and elevated temperature. The first type of measurement is based on alternating stages of short-term partial chemical reaction and longer neutron image acquisition, and the second type is a real in situ neutron imaging experiment. Results of applying energy-resolved neutron imaging with both approaches to the NiO-YSZ reduction investigation indicate enhancement of the reduction rate due to applied stress, which is consistent with the results of the authors' previous research.Results of the first in situ energy-resolved neutron imaging of NiO-YSZ (YSZ is yttria-stabilized zirconia) reduction under applied stress are presented. Neutron experiments were performed at the pulsed neutron source ISIS (UK) using a time-of-flight approach.

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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
energy-resolved neutron imaging, in situ phase mapping, SOC electrode supports, solid oxide cells
in
Journal of Applied Crystallography
volume
49
issue
5
pages
8 pages
publisher
Wiley-Blackwell
external identifiers
  • scopus:84989870652
ISSN
0021-8898
DOI
10.1107/S1600576716012668
language
English
LU publication?
yes
id
0bdcb891-4e5f-42c2-934c-a447b31cd41f
date added to LUP
2016-10-26 07:57:30
date last changed
2017-04-19 14:35:43
@article{0bdcb891-4e5f-42c2-934c-a447b31cd41f,
  abstract     = {<p>This article reports on in situ macroscopic scale imaging of NiO-YSZ (YSZ is yttria-stabilized zirconia) reduction under applied stress - a phase transition taking place in solid oxide electrochemical cells in a reducing atmosphere of a hydrogen/nitrogen mixture and at operation temperatures of up to 1073K. This process is critical for the performance and lifetime of the cells. Energy-resolved neutron imaging was applied to observe the phase transition directly with time and spatial resolution. Two different approaches are presented for using this imaging technique for the investigation of chemical and physical processes requiring controlled atmosphere and elevated temperature. The first type of measurement is based on alternating stages of short-term partial chemical reaction and longer neutron image acquisition, and the second type is a real in situ neutron imaging experiment. Results of applying energy-resolved neutron imaging with both approaches to the NiO-YSZ reduction investigation indicate enhancement of the reduction rate due to applied stress, which is consistent with the results of the authors' previous research.Results of the first in situ energy-resolved neutron imaging of NiO-YSZ (YSZ is yttria-stabilized zirconia) reduction under applied stress are presented. Neutron experiments were performed at the pulsed neutron source ISIS (UK) using a time-of-flight approach.</p>},
  author       = {Makowska, Malgorzata G. and Strobl, Markus and Lauridsen, Erik M. and Kabra, Saurabh and Kockelmann, Winfried and Tremsin, Anton and Frandsen, Henrik L. and Theil Kuhn, Luise},
  issn         = {0021-8898},
  keyword      = {energy-resolved neutron imaging,in situ phase mapping,SOC electrode supports,solid oxide cells},
  language     = {eng},
  month        = {10},
  number       = {5},
  pages        = {1674--1681},
  publisher    = {Wiley-Blackwell},
  series       = {Journal of Applied Crystallography},
  title        = {In situ time-of-flight neutron imaging of NiO-YSZ anode support reduction under influence of stress},
  url          = {http://dx.doi.org/10.1107/S1600576716012668},
  volume       = {49},
  year         = {2016},
}