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Title: High–Speed electron beam curing of thick electrode for high energy density Li-ion batteries

Abstract

Electron beam curing is demonstrated as a promising method for high speed, low cost and environmentally friendly battery electrode manufacturing. This work reports transfer of this process to pilot scale equipment and evaluation of electrochemical performance in prototype 1.5 Ah pouch cells. Thick LiNi0.5Mn0.3Co0.2O2 (NMC532) composite electrodes with an areal loading of 25 mg/cm2 (~4 mAh/cm2) are successfully cured at a line speed of 500 feet per minute at 275 keV. Compared to the NMC532 cathode processed via a conventional coating method, the electron beam cured electrodes show higher capacity fade in the first 100 cycles, but similar fade rate afterwards. Further improvement strategies are proposed and discussed. Furthermore, this work demonstrates that electron beam curing is a promising method for manufacturing thick battery electrodes at high speeds and low capital/operation cost.

Authors:
; ; ;
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)
OSTI Identifier:
1562732
Alternate Identifier(s):
OSTI ID: 1523757
Grant/Contract Number:  
AC05-00OR22725
Resource Type:
Published Article
Journal Name:
Green Energy & Environment
Additional Journal Information:
Journal Name: Green Energy & Environment Journal Volume: 4 Journal Issue: 4; Journal ID: ISSN 2468-0257
Publisher:
Elsevier - Institute of Process Engineering, Chinese Academy of Sciences
Country of Publication:
China
Language:
English
Subject:
25 ENERGY STORAGE

Citation Formats

Du, Zhijia, Janke, Christopher J., Li, Jianlin, and Wood, David L. High–Speed electron beam curing of thick electrode for high energy density Li-ion batteries. China: N. p., 2019. Web. doi:10.1016/j.gee.2019.04.001.
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Du, Zhijia, Janke, Christopher J., Li, Jianlin, & Wood, David L. High–Speed electron beam curing of thick electrode for high energy density Li-ion batteries. China. https://doi.org/10.1016/j.gee.2019.04.001
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Du, Zhijia, Janke, Christopher J., Li, Jianlin, and Wood, David L. Tue . "High–Speed electron beam curing of thick electrode for high energy density Li-ion batteries". China. https://doi.org/10.1016/j.gee.2019.04.001.
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@article{osti_1562732,
title = {High–Speed electron beam curing of thick electrode for high energy density Li-ion batteries},
author = {Du, Zhijia and Janke, Christopher J. and Li, Jianlin and Wood, David L.},
abstractNote = {Electron beam curing is demonstrated as a promising method for high speed, low cost and environmentally friendly battery electrode manufacturing. This work reports transfer of this process to pilot scale equipment and evaluation of electrochemical performance in prototype 1.5 Ah pouch cells. Thick LiNi0.5Mn0.3Co0.2O2 (NMC532) composite electrodes with an areal loading of 25 mg/cm2 (~4 mAh/cm2) are successfully cured at a line speed of 500 feet per minute at 275 keV. Compared to the NMC532 cathode processed via a conventional coating method, the electron beam cured electrodes show higher capacity fade in the first 100 cycles, but similar fade rate afterwards. Further improvement strategies are proposed and discussed. Furthermore, this work demonstrates that electron beam curing is a promising method for manufacturing thick battery electrodes at high speeds and low capital/operation cost.},
doi = {10.1016/j.gee.2019.04.001},
journal = {Green Energy & Environment},
number = 4,
volume = 4,
place = {China},
year = {Tue Oct 01 00:00:00 EDT 2019},
month = {Tue Oct 01 00:00:00 EDT 2019}
}
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Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
https://doi.org/10.1016/j.gee.2019.04.001
Copyright Statement
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Citation Metrics:
Cited by: 12 works
Citation information provided by
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Figures / Tables:

Figure 1 Figure 1: (a) overview of the EB curing pilot line, (b) a paper roll unwinding and entering the EB curing chamber, (c) the EB curing chamber and (d) a paper roll existing the EB curing chamber
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Works referenced in this record:

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Electron Beam Curing of Composite Positive Electrode for Li-Ion Battery
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    Figures / Tables found in this record:

    Figure 1 (p. 6)figure
    Figure 2 (p. 7)figure
    Figure 3 (p. 8)figure
    Figure 4 (p. 9)figure
    Figure 5 (p. 9)figure
    Figure 6 (p. 10)figure
    Figure 7 (p. 11)figure
    Figure 8 (p. 11)figure
    Figure 9 (p. 12)figure
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