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Title: Quantitative Analysis of Multi-Scale Heterogeneities in Complex Electrode Microstructures

Abstract

The model was developed analyzing data from five large-volume physical reconstructions – collected using Xe-plasma focused ion beam with SEM (PFIB-SEM) – of several commercial cell electrodes and from unique sets of synthetic microstructures designed to have controlled distributions in particle size and local volume fractions. When comparing physical reconstructions from distinct regions of the same electrode, millimeter length scale heterogeneities are also observed, even in microstructures with limited mesoscale variability. While the model is developed using synthetic microstructures, it is used to quantify three different types of heterogeneities in the commercial cells. The potential origins are discussed with respect to variations in particle size distributions in feedstocks and to phase distributions related to fabrication processes; the potential performance impacts are discussed with respect to two effective medium theory models. The characterization and analytical methodologies and model presented can support the design and development of improved electrodes.

Authors:
ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [1];  [3];  [4];  [4];  [3];  [5]; ORCiD logo [1];  [1]; ORCiD logo [1]
  1. National Energy Technology Lab. (NETL), Pittsburgh, PA (United States); Carnegie Mellon Univ., Pittsburgh, PA (United States)
  2. National Energy Technology Lab. (NETL), Pittsburgh, PA (United States); Leidos Research Support Team, Morgantown, WV (United States)
  3. Leidos Research Support Team, Morgantown, WV (United States); National Energy Technology Lab. (NETL), Morgantown, WV (United States)
  4. Carnegie Mellon Univ., Pittsburgh, PA (United States)
  5. National Energy Technology Lab. (NETL), Morgantown, WV (United States)
Publication Date:
Research Org.:
National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV (United States)
Sponsoring Org.:
Carnegie Mellon Univ.; National Science Foundation (NSF)
OSTI Identifier:
1607755
Grant/Contract Number:  
MCF-677785; 89243318CFE000003; DMR 1428480
Resource Type:
Accepted Manuscript
Journal Name:
Journal of the Electrochemical Society (Online)
Additional Journal Information:
Journal Name: Journal of the Electrochemical Society (Online); Journal Volume: 167; Journal Issue: 5; Journal ID: ISSN 1945-7111
Publisher:
IOP Publishing
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE

Citation Formats

Mahbub, Rubayyat, Epting, William K., Hsu, Tim, Mason, Jerry H., Feng, Minzheng, Nuhfer, Noel T., Abernathy, Harry W., Hackett, Gregory A., Litster, Shawn, Rollett, Anthony D., and Salvador, Paul A. Quantitative Analysis of Multi-Scale Heterogeneities in Complex Electrode Microstructures. United States: N. p., 2019. Web. https://doi.org/10.1149/2.0102005JES.
Mahbub, Rubayyat, Epting, William K., Hsu, Tim, Mason, Jerry H., Feng, Minzheng, Nuhfer, Noel T., Abernathy, Harry W., Hackett, Gregory A., Litster, Shawn, Rollett, Anthony D., & Salvador, Paul A. Quantitative Analysis of Multi-Scale Heterogeneities in Complex Electrode Microstructures. United States. https://doi.org/10.1149/2.0102005JES
Mahbub, Rubayyat, Epting, William K., Hsu, Tim, Mason, Jerry H., Feng, Minzheng, Nuhfer, Noel T., Abernathy, Harry W., Hackett, Gregory A., Litster, Shawn, Rollett, Anthony D., and Salvador, Paul A. Mon . "Quantitative Analysis of Multi-Scale Heterogeneities in Complex Electrode Microstructures". United States. https://doi.org/10.1149/2.0102005JES. https://www.osti.gov/servlets/purl/1607755.
@article{osti_1607755,
title = {Quantitative Analysis of Multi-Scale Heterogeneities in Complex Electrode Microstructures},
author = {Mahbub, Rubayyat and Epting, William K. and Hsu, Tim and Mason, Jerry H. and Feng, Minzheng and Nuhfer, Noel T. and Abernathy, Harry W. and Hackett, Gregory A. and Litster, Shawn and Rollett, Anthony D. and Salvador, Paul A.},
abstractNote = {The model was developed analyzing data from five large-volume physical reconstructions – collected using Xe-plasma focused ion beam with SEM (PFIB-SEM) – of several commercial cell electrodes and from unique sets of synthetic microstructures designed to have controlled distributions in particle size and local volume fractions. When comparing physical reconstructions from distinct regions of the same electrode, millimeter length scale heterogeneities are also observed, even in microstructures with limited mesoscale variability. While the model is developed using synthetic microstructures, it is used to quantify three different types of heterogeneities in the commercial cells. The potential origins are discussed with respect to variations in particle size distributions in feedstocks and to phase distributions related to fabrication processes; the potential performance impacts are discussed with respect to two effective medium theory models. The characterization and analytical methodologies and model presented can support the design and development of improved electrodes.},
doi = {10.1149/2.0102005JES},
journal = {Journal of the Electrochemical Society (Online)},
number = 5,
volume = 167,
place = {United States},
year = {2019},
month = {12}
}

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