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  4. Active Near-Infrared Imaging for Spatio-Temporal Monitoring of a Solid Oxide Cell in Operation
 
research article

Active Near-Infrared Imaging for Spatio-Temporal Monitoring of a Solid Oxide Cell in Operation

Jeanmonod, Guillaume  
•
Diethelm, Stefan  
•
Van herle, J  
2019
ECS Transactions

The characterization of solid oxide cells (SOCs) relies mainly on direct-current (DC) and alternating-current (AC) methods that provide only average surface electro-chemical responses. As such, the spatial distribution is not well captured and the complexity of the electrochemical system is not fully represented. Infrared imaging could be used to locally characterize SOCs. This method has only been performed at steady-state, but, analogous to DC and AC characterization methods, applying a thermal perturbation could improve its sensitivity. This work proposes the use of active infrared imaging to characterize an operating SOC. To demonstrate the feasibility of the proposed method, an SOC was exposed to a current pulse while monitoring the infrared response using a CMOS camera. The phase and amplitude representation of the infrared response was then computed by Fourier transform and used for rapid identification of regions of interests. Results showed that less than 10% of the SOC was useful in the electrochemical process.

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Type
research article
DOI
10.1149/09101.0437ecst
Author(s)
Jeanmonod, Guillaume  
Diethelm, Stefan  
Van herle, J  
Date Issued

2019

Published in
ECS Transactions
Volume

91

Issue

1

Start page

437

End page

446

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
SCI-STI-JVH  
Available on Infoscience
October 31, 2020
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/172913
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