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Recent Insights into Rate Performance Limitations of Li-ion Batteries

 
: Heubner, Christian; Nikolowski, Kristian; Reuber, Sebastian; Schneider, Michael; Wolter, Mareike; Michaelis, Alexander

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Fulltext ()

Batteries & supercaps 4 (2021), No.2, pp.268-285
ISSN: 2566-6223
Bundesministerium für Bildung und Forschung BMBF (Deutschland)
03XP0254; KaSiLi
Bundesministerium für Bildung und Forschung BMBF (Deutschland)
03XP0294; OptiEx
English
Journal Article, Electronic Publication
Fraunhofer IKTS ()
battery; performance; fast charging; electrode; composite

Abstract
Increasing the fast charging capabilities and the driving range of electric vehicles are major goals in Li-ion battery research to accelerate mass market adoption and reduce greenhouse gas emissions. This requires a fundamental understanding of the performance limiting factors to enable a knowledge-based optimization of materials, electrode design and cell architectures. Herein, electrochemical fundamentals and recent insights concerning rate performance limitations of Li-ion batteries at the electrode level are reviewed and discussed from charge and mass transport perspectives. The application of straightforward analytical and semi-empirical models is highlighted in view of understanding specific performance limiting factors of electrodes for Li-ion batteries based on experimental investigations. The summarized insights are discussed regarding promising improvement strategies to approach the practical limits of liquid electrolyte-based Li-ion batteries.

: http://publica.fraunhofer.de/documents/N-618454.html