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Title: Quantitative Microstructure Characterization of a NMC Electrode

Abstract

Performance of lithium-ion batteries (LIBs) is strongly influenced by the porous microstructure of their electrodes. In this work, 3D microstructures of calendared and un-calendared positive electrode LiNi1/3Mn1/3Co1/3O2 (NMC) have been investigated in order to extract relevant properties useful for battery modeling. Transport (volume fraction, connectivity, particle size and tortuosity) and electrochemical (specific surface area) properties have been calculated for the pore and the active material. Special attention has been paid to determine the size of the so-called representative volume element (RVE) required to be statistically representative of the heterogeneous medium. Several parameters have been calculated using a panel of different numerical methods in order to compare their results. Besides, the image level of detail has been evaluated (using original criteria based upon edge detection) to assess the overall data quality available for the study.

Authors:
;
Publication Date:
Research Org.:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (EE-3V)
OSTI Identifier:
1402561
Report Number(s):
NREL/JA-5400-68966
Journal ID: ISSN 1938-6737
DOE Contract Number:
AC36-08GO28308
Resource Type:
Journal Article
Resource Relation:
Journal Name: ECS Transactions (Online); Journal Volume: 77; Journal Issue: 11
Country of Publication:
United States
Language:
English
Subject:
30 DIRECT ENERGY CONVERSION; lithium ion battery; NMC; microstructure

Citation Formats

Usseglio-Viretta, François Laurent Emilien, and Smith, Kandler. Quantitative Microstructure Characterization of a NMC Electrode. United States: N. p., 2017. Web. doi:10.1149/07711.1095ecst.
Usseglio-Viretta, François Laurent Emilien, & Smith, Kandler. Quantitative Microstructure Characterization of a NMC Electrode. United States. doi:10.1149/07711.1095ecst.
Usseglio-Viretta, François Laurent Emilien, and Smith, Kandler. Fri . "Quantitative Microstructure Characterization of a NMC Electrode". United States. doi:10.1149/07711.1095ecst.
@article{osti_1402561,
title = {Quantitative Microstructure Characterization of a NMC Electrode},
author = {Usseglio-Viretta, François Laurent Emilien and Smith, Kandler},
abstractNote = {Performance of lithium-ion batteries (LIBs) is strongly influenced by the porous microstructure of their electrodes. In this work, 3D microstructures of calendared and un-calendared positive electrode LiNi1/3Mn1/3Co1/3O2 (NMC) have been investigated in order to extract relevant properties useful for battery modeling. Transport (volume fraction, connectivity, particle size and tortuosity) and electrochemical (specific surface area) properties have been calculated for the pore and the active material. Special attention has been paid to determine the size of the so-called representative volume element (RVE) required to be statistically representative of the heterogeneous medium. Several parameters have been calculated using a panel of different numerical methods in order to compare their results. Besides, the image level of detail has been evaluated (using original criteria based upon edge detection) to assess the overall data quality available for the study.},
doi = {10.1149/07711.1095ecst},
journal = {ECS Transactions (Online)},
number = 11,
volume = 77,
place = {United States},
year = {Fri Jul 07 00:00:00 EDT 2017},
month = {Fri Jul 07 00:00:00 EDT 2017}
}