Please use this identifier to cite or link to this item:
http://hdl.handle.net/10397/95915
Title: | Electrochemical fields within 3D reconstructed microstructures of mixed ionic and electronic conducting devices | Authors: | Zhang, Y Chen, Y Lin, Y Yan, M Harris, WM Chiu, WKS Ni, M Chen, F |
Issue Date: | 1-Nov-2016 | Source: | Journal of power sources, 1 Nov. 2016, v. 331, p. 167-179 | Abstract: | The performance and stability of the mixed ionic and electronic conducting (MIEC) membrane devices, such as solid oxide cells (SOCs) and oxygen separation membranes (OSMs) interplay tightly with the transport properties and the three-dimensional (3D) microstructure of the membrane. However, development of the MIEC devices is hindered by the limited knowledge about the distribution of electrochemical fields within the 3D local microstructures, especially at surface and interface. In this work, a generic model conforming to local thermodynamic equilibrium is developed to calculate the electrochemical fields, such as electric potential and oxygen chemical potential, within the 3D microstructure of the MIEC membrane. Stability of the MIEC membrane is evaluated by the distribution of oxygen partial pressure. The cell-level performance such as polarization resistance and voltage vs. current curve can be further calculated. Case studies are performed to demonstrate the capability of the framework by using X-ray computed tomography reconstructed 3D microstructures of a SOC and an OSM. The calculation method demonstrates high computational efficiency for large size 3D tomographic microstructures, and permits parallel calculation. The framework can serve as a powerful tool for correlating the transport properties and the 3D microstructure to the performance and the stability of MIEC devices. | Keywords: | 3D microstructure Electrolysis Fuel cells Mixed ionic and electronic conductors (MIEC) Permeation membrane |
Publisher: | Elsevier | Journal: | Journal of power sources | ISSN: | 0378-7753 | EISSN: | 1873-2755 | DOI: | 10.1016/j.jpowsour.2016.09.003 | Rights: | © 2016 Elsevier B.V. All rights reserved. © 2016. This manuscript version is made available under the CC-BY-NC-ND 4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/ The following publication Zhang, Y., Chen, Y., Lin, Y., Yan, M., Harris, W. M., Chiu, W. K., ... & Chen, F. (2016). Electrochemical fields within 3D reconstructed microstructures of mixed ionic and electronic conducting devices. Journal of Power Sources, 331, 167-179 is available at https://doi.org/10.1016/j.jpowsour.2016.09.003. |
Appears in Collections: | Journal/Magazine Article |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
Ni_Electrochemical_Fields_Within.pdf | Pre-Published version | 1.95 MB | Adobe PDF | View/Open |
Page views
58
Last Week
0
0
Last month
Citations as of May 19, 2024
Downloads
25
Citations as of May 19, 2024
SCOPUSTM
Citations
13
Citations as of May 17, 2024
WEB OF SCIENCETM
Citations
12
Citations as of Feb 29, 2024
Google ScholarTM
Check
Altmetric
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.