Abstract
Mechanical and electrochemical performance of layers composed
of Ni-YSZ cermet in solid oxide fuel and electrolysis cells (SOC)
depends on their microstructure and initial internal stresses. After
sintering, the manufacturing conditions, i.e. temperature,
atmosphere and loads, can influence the microstructure and in
particular the internal stresses in the Ni-YSZ layer and thereby the
cell performance. Spatially resolved observation of the phase
transition during reduction can provide information on how
parameters like temperature and external load influence the
reaction progress. This information is crucial for optimization of
the SOC performance. In this work the measurements with energy
resolved neutron imaging of the phase transition during the NiOYSZ
reduction performed at different temperatures with and
without applied load, are presented. The results indicate a link
between reduction rate and stress, which will influence the initial
stress field of the SOC stacks.
Original language | English |
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Journal | E C S Transactions |
Volume | 68 |
Issue number | 1 |
Pages (from-to) | 1103-1114 |
ISSN | 1938-5862 |
DOIs | |
Publication status | Published - 2015 |
Event | ECS Conference on Electrochemical Energy Conversion & Storage with SOFC–XIV - Glasgow, United Kingdom Duration: 26 Jul 2015 → 31 Jul 2015 |
Conference
Conference | ECS Conference on Electrochemical Energy Conversion & Storage with SOFC–XIV |
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Country/Territory | United Kingdom |
City | Glasgow |
Period | 26/07/2015 → 31/07/2015 |