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Myth and Reality of a Universal Lithium-Ion Battery Electrode Design Optimum: A Perspective and Case Study

Witt, Daniel; Wilde, Dion; Baakes, Florian; Belkhir, Fethi; Röder, Fridolin; Krewer, Ulrike

Abstract:
The quest toward optimal electrode design for energy‐ and power‐demanding applications involves besides experimental effort also less resource‐intensive model‐based studies. The diversity of optimization objectives and benchmark systems complicates the practical utilization of available methods and gained knowledge. Despite the increasing importance of fast charging, electrode design studies commonly focus only on discharge characteristics. This paper features, besides an overview and perspective of electrode structuring concepts and optimization pathways, a model‐based full cell parameter screening of two‐layered electrodes for charge and discharge. The small fraction of cells with superior performance among the evaluated configurations underlines the importance of a joint experimental and model‐based electrode design optimization. The results further indicate that the performance of cell designs tailored for fast charge or fast discharge differs substantially; the gap widens if charging is terminated below 0 V versus Li/Li+ to prevent lithium plating. The broad parameter screening is complemented by a high‐resolution half cell parameter study. ... mehr

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Verlagsausgabe §
DOI: 10.5445/IR/1000130811
Veröffentlicht am 25.03.2021
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Angewandte Materialien - Elektrochemische Technologien (IAM-ET)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2021
Sprache Englisch
Identifikator ISSN: 2194-4288, 2194-4296
KITopen-ID: 1000130811
Erschienen in Energy Technology
Verlag Wiley-VCH Verlag
Seiten Art.-Nr.: 2000989
Schlagwörter design guidelines; multilayered electrodes; pseudo-2D model; parameter screening
Nachgewiesen in Scopus
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