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Geometric Characteristics of Three Dimensional Reconstructed Anode Electrodes of Lithium Ion Batteries

Author

Listed:
  • Cheolwoong Lim

    (Department of Mechanical Engineering, Indiana University-Purdue University Indianapolis, Indianapolis, IN 46202, USA)

  • Bo Yan

    (Department of Mechanical Engineering, Indiana University-Purdue University Indianapolis, Indianapolis, IN 46202, USA
    School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200030, China)

  • Leilei Yin

    (Beckman Institute, University of Illinois, Urbana, IL 61801, USA)

  • Likun Zhu

    (Department of Mechanical Engineering, Indiana University-Purdue University Indianapolis, Indianapolis, IN 46202, USA)

Abstract

The realistic three dimensional (3D) microstructure of lithium ion battery (LIB) electrode plays a key role in studying the effects of inhomogeneous microstructures on the performance of LIBs. However, the complexity of realistic microstructures imposes a significant computational cost on numerical simulation of large size samples. In this work, we used tomographic data obtained for a commercial LIB graphite electrode to evaluate the geometric characteristics of the reconstructed electrode microstructure. Based on the analysis of geometric properties, such as porosity, specific surface area, tortuosity, and pore size distribution, a representative volume element (RVE) that retains the geometric characteristics of the electrode material was obtained for further numerical studies. In this work, X-ray micro-computed tomography (CT) with 0.56 μm resolution was employed to capture the inhomogeneous porous microstructures of LIB anode electrodes. The Sigmoid transform function was employed to convert the initial raw tomographic images to binary images. Moreover, geometric characteristics of an anode electrode after 2400 cycles at the charge/discharge rate of 1 C were compared with those of a new anode electrode to investigate morphological change of the electrode. In general, the cycled electrode shows larger porosity, smaller tortuosity, and similar specific surface area compared to the new electrode.

Suggested Citation

  • Cheolwoong Lim & Bo Yan & Leilei Yin & Likun Zhu, 2014. "Geometric Characteristics of Three Dimensional Reconstructed Anode Electrodes of Lithium Ion Batteries," Energies, MDPI, vol. 7(4), pages 1-15, April.
    • Handle: RePEc:gam:jeners:v:7:y:2014:i:4:p:2558-2572:d:35346
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    Citations

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    Cited by:

    1. Henrik Zsiborács & Nóra Hegedűsné Baranyai & András Vincze & István Háber & Gábor Pintér, 2018. "Economic and Technical Aspects of Flexible Storage Photovoltaic Systems in Europe," Energies, MDPI, vol. 11(6), pages 1-17, June.
    2. Miranda, D. & Costa, C.M. & Almeida, A.M. & Lanceros-Méndez, S., 2016. "Computer simulations of the influence of geometry in the performance of conventional and unconventional lithium-ion batteries," Applied Energy, Elsevier, vol. 165(C), pages 318-328.

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