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

Zhijia Du; Christopher J. Janke; Jianlin Li; David L. Wood

doi:10.1016/j.gee.2019.04.001

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

Zhijia Du, Christopher J. Janke, Jianlin Li, David L. Wood

Research output: Contribution to journal › Article › peer-review

20 Scopus citations

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 LiNi_0.5Mn_0.3Co_0.2O₂ (NMC532) composite electrodes with an areal loading of 25 mg cm⁻ ² (∼4 mAh cm⁻ ²) 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. This work demonstrates that electron beam curing is a promising method for manufacturing thick battery electrodes at high speeds and low capital/operation cost.

Original language	English
Pages (from-to)	375-381
Number of pages	7
Journal	Green Energy and Environment
Volume	4
Issue number	4
DOIs	https://doi.org/10.1016/j.gee.2019.04.001
State	Published - Oct 2019

Funding

This research at Oak Ridge National Laboratory, managed by UT Battelle, LLC, for the U.S. Department of Energy (DOE) under Contract DE-AC05-00OR22725 , was sponsored by the Office of Energy Efficiency and Renewable Energy (EERE) Vehicle Technologies Office (VTO) (Deputy Director: David Howell) Applied Battery Research subprogram (Program Manager: Peter Faguy). This research at Oak Ridge National Laboratory, managed by UT Battelle, LLC, for the U.S. Department of Energy (DOE) under Contract DE-AC05-00OR22725, was sponsored by the Office of Energy Efficiency and Renewable Energy (EERE) Vehicle Technologies Office (VTO) (Deputy Director: David Howell) Applied Battery Research subprogram (Program Manager: Peter Faguy).

Funders	Funder number
U.S. Department of Energy	DE-AC05-00OR22725
Battelle
Office of Energy Efficiency and Renewable Energy
Oak Ridge National Laboratory
Vehicle Technologies Office
UT-Battelle

Keywords

Electron beam curing
Li-ion batteries
Thick electrode

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.gee.2019.04.001

Cite this

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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 cm− 2 (∼4 mAh cm− 2) 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. This work demonstrates that electron beam curing is a promising method for manufacturing thick battery electrodes at high speeds and low capital/operation cost.",

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author = "Zhijia Du and Janke, {Christopher J.} and Jianlin Li and Wood, {David L.}",

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AU - Du, Zhijia

AU - Janke, Christopher J.

AU - Li, Jianlin

AU - Wood, David L.

PY - 2019/10

Y1 - 2019/10

N2 - 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 cm− 2 (∼4 mAh cm− 2) 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. This work demonstrates that electron beam curing is a promising method for manufacturing thick battery electrodes at high speeds and low capital/operation cost.

AB - 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 cm− 2 (∼4 mAh cm− 2) 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. This work demonstrates that electron beam curing is a promising method for manufacturing thick battery electrodes at high speeds and low capital/operation cost.

KW - Electron beam curing

KW - Li-ion batteries

KW - Thick electrode

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

Abstract

Funding

Keywords

UN SDGs

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