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Process-Product Interdependencies in Lamination of Electrodes and Separators for Lithium-Ion Batteries

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  • Ruben Leithoff

    (Institute of Machine Tools and Production Technology, Technische Universität Braunschweig, 38106 Braunschweig, Germany
    Battery LabFactory Braunschweig, Technische Universität Braunschweig, 38106 Braunschweig, Germany)

  • Arian Fröhlich

    (Institute of Machine Tools and Production Technology, Technische Universität Braunschweig, 38106 Braunschweig, Germany
    Battery LabFactory Braunschweig, Technische Universität Braunschweig, 38106 Braunschweig, Germany)

  • Steffen Masuch

    (Institute of Machine Tools and Production Technology, Technische Universität Braunschweig, 38106 Braunschweig, Germany)

  • Gabriela Ventura Silva

    (Institute of Machine Tools and Production Technology, Technische Universität Braunschweig, 38106 Braunschweig, Germany
    Battery LabFactory Braunschweig, Technische Universität Braunschweig, 38106 Braunschweig, Germany)

  • Klaus Dröder

    (Institute of Machine Tools and Production Technology, Technische Universität Braunschweig, 38106 Braunschweig, Germany
    Battery LabFactory Braunschweig, Technische Universität Braunschweig, 38106 Braunschweig, Germany)

Abstract

In today’s cell production, the focus lies on maximizing productivity while maintaining product quality. To achieve this, the lamination of electrode and separator is one key process technology, as it bonds the electrode and separator to form mechanically resilient intermediate products. These mechanically resilient intermediates are necessary to enable high throughput processes. Although the lamination process has significant effects on the electrochemical performance of battery cells, it has not been sufficiently researched with regard to its process-product interdependencies. Therefore, this paper addresses the investigation of these interdependencies and proposes three characterization methods (grey scale analysis, high potential tests, electrochemical cycling and C-rate tests). The results of the three methods show that the lamination process with its process parameters (lamination temperature, lamination pressure and material feed rate) has an influence on both the properties of the intermediate product and the cell properties. In conclusion, the knowledge of the process-product interdependencies is essential in order to utilize the advantages of lamination integrated into the process chain and consequently achieve quality-assured cell production.

Suggested Citation

  • Ruben Leithoff & Arian Fröhlich & Steffen Masuch & Gabriela Ventura Silva & Klaus Dröder, 2022. "Process-Product Interdependencies in Lamination of Electrodes and Separators for Lithium-Ion Batteries," Energies, MDPI, vol. 15(7), pages 1-17, April.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:7:p:2670-:d:787648
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    References listed on IDEAS

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    1. Mauler, Lukas & Duffner, Fabian & Leker, Jens, 2021. "Economies of scale in battery cell manufacturing: The impact of material and process innovations," Applied Energy, Elsevier, vol. 286(C).
    2. Duffner, Fabian & Mauler, Lukas & Wentker, Marc & Leker, Jens & Winter, Martin, 2021. "Large-scale automotive battery cell manufacturing: Analyzing strategic and operational effects on manufacturing costs," International Journal of Production Economics, Elsevier, vol. 232(C).
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    Cited by:

    1. Pan, Yue & Kong, Xiangdong & Yuan, Yuebo & Sun, Yukun & Han, Xuebing & Yang, Hongxin & Zhang, Jianbiao & Liu, Xiaoan & Gao, Panlong & Li, Yihui & Lu, Languang & Ouyang, Minggao, 2023. "Detecting the foreign matter defect in lithium-ion batteries based on battery pilot manufacturing line data analyses," Energy, Elsevier, vol. 262(PB).
    2. Jakob Veitl & Hans-Konrad Weber & Martin Frankenberger & Karl-Heinz Pettinger, 2022. "Modification of Battery Separators via Electrospinning to Enable Lamination in Cell Assembly," Energies, MDPI, vol. 15(22), pages 1-16, November.

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