Identifying degradation mechanisms in lithium-ion batteries with coating defects at the cathode
Abstract
Understanding the effect of electrode manufacturing defects on lithium-ion battery (LIB) performance is key to reducing the scrap rate and cost during cell manufacturing. In this regard, it is necessary to quantify the impact of various defects that are generated during the electrode coating process. To this end, we have tested large-format 0.5 Ah LiNi0.5Mn0.3Co0.2O2/graphite pouch cells with defects intentionally introduced into the cathode coating. Different types of coating defects were tested including agglomerates, pinholes, and non-uniform coating. Electrodes with larger non-coated surface had greater capacity fade than baseline electrodes, while pinholes and agglomerates did not affect performance adversely. Furthermore, post cycle analysis of electrodes showed that the anode facing the defective region in the cathode was clearly impacted by the defect. Further characterization using Raman spectroscopy, X-ray photoelectron spectroscopy, and X-ray diffraction provided evidence for a proposed mechanism for material degradation related to the most detrimental type of coating defect.
- Authors:
-
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Univ. of Tennessee, Knoxville, TN (United States)
- Publication Date:
- Research Org.:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE); USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1480631
- Grant/Contract Number:
- AC05-00OR22725
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Applied Energy
- Additional Journal Information:
- Journal Volume: 231; Journal Issue: C; Journal ID: ISSN 0306-2619
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 25 ENERGY STORAGE; Li-ion battery; Manufacturing; Electrode coating; Raman mapping; XPS; Computational modeling
Citation Formats
David, Lamuel Abraham, Ruther, Rose E., Mohanty, Debasish, Meyer, III, Harry M., Sheng, Yangping, Kalnaus, Sergiy, Daniel, Claus, and Wood, III, David L. Identifying degradation mechanisms in lithium-ion batteries with coating defects at the cathode. United States: N. p., 2018.
Web. doi:10.1016/j.apenergy.2018.09.073.
David, Lamuel Abraham, Ruther, Rose E., Mohanty, Debasish, Meyer, III, Harry M., Sheng, Yangping, Kalnaus, Sergiy, Daniel, Claus, & Wood, III, David L. Identifying degradation mechanisms in lithium-ion batteries with coating defects at the cathode. United States. https://doi.org/10.1016/j.apenergy.2018.09.073
David, Lamuel Abraham, Ruther, Rose E., Mohanty, Debasish, Meyer, III, Harry M., Sheng, Yangping, Kalnaus, Sergiy, Daniel, Claus, and Wood, III, David L. Thu .
"Identifying degradation mechanisms in lithium-ion batteries with coating defects at the cathode". United States. https://doi.org/10.1016/j.apenergy.2018.09.073. https://www.osti.gov/servlets/purl/1480631.
@article{osti_1480631,
title = {Identifying degradation mechanisms in lithium-ion batteries with coating defects at the cathode},
author = {David, Lamuel Abraham and Ruther, Rose E. and Mohanty, Debasish and Meyer, III, Harry M. and Sheng, Yangping and Kalnaus, Sergiy and Daniel, Claus and Wood, III, David L.},
abstractNote = {Understanding the effect of electrode manufacturing defects on lithium-ion battery (LIB) performance is key to reducing the scrap rate and cost during cell manufacturing. In this regard, it is necessary to quantify the impact of various defects that are generated during the electrode coating process. To this end, we have tested large-format 0.5 Ah LiNi0.5Mn0.3Co0.2O2/graphite pouch cells with defects intentionally introduced into the cathode coating. Different types of coating defects were tested including agglomerates, pinholes, and non-uniform coating. Electrodes with larger non-coated surface had greater capacity fade than baseline electrodes, while pinholes and agglomerates did not affect performance adversely. Furthermore, post cycle analysis of electrodes showed that the anode facing the defective region in the cathode was clearly impacted by the defect. Further characterization using Raman spectroscopy, X-ray photoelectron spectroscopy, and X-ray diffraction provided evidence for a proposed mechanism for material degradation related to the most detrimental type of coating defect.},
doi = {10.1016/j.apenergy.2018.09.073},
journal = {Applied Energy},
number = C,
volume = 231,
place = {United States},
year = {Thu Sep 20 00:00:00 EDT 2018},
month = {Thu Sep 20 00:00:00 EDT 2018}
}
Web of Science
Figures / Tables:
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