Insights into Influencing Electrode Calendering on the Battery Performance,Advanced Energy Materials

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Insights into Influencing Electrode Calendering on the Battery Performance
Advanced Energy Materials ( IF 24.4 ) Pub Date : 2023-05-26 , DOI: 10.1002/aenm.202300973
Mozaffar Abdollahifar _{1,

2} , Heather Cavers _{1,

2} , Sören Scheffler _{1,

2} , Alexander Diener _{1,

2} , Mark Lippke _{1,

2} , Arno Kwade _{1,

2}

Affiliation

As the demand for lithium-ion batteries (LIBs) continuously grows, the necessity to improve their efficiency/performance also grows. For this reason, optimization of the individual production steps is critical. Calendering is a crucial production step whereby electrode coatings are compacted to targeted densities. This process affects the porosity, adhesion, thickness, wettability, and charge transport properties of the electrodes, as well as the homogeneity of the coatings. Optimal calendered electrodes improve volumetric energy density, cyclic stability, and rate capability of the cells and also enhance the structural stability of the active material, which affects electrode safety and polarization. This article outlines the fundamental processes and mechanisms, as well as how modeling, simulation, and tomography can be used to optimize these processes. Additionally, the influence of calendering on a wide range of anode and cathode active materials is discussed. This review serves to give a deeper understanding into the calendering process-structure-performance relationships, and how they can be optimized to improve the performance of LIBs.

中文翻译：

深入了解电极压延对电池性能的影响

随着对锂离子电池 (LIB) 的需求不断增长，提高其效率/性能的必要性也随之增长。因此，优化各个生产步骤至关重要。压延是关键的生产步骤，通过压延将电极涂层压实至目标密度。该过程影响电极的孔隙率、附着力、厚度、润湿性和电荷传输特性以及涂层的均匀性。优化的压延电极可以提高电池的体积能量密度、循环稳定性和倍率性能，还可以增强活性材料的结构稳定性，从而影响电极的安全性和极化。本文概述了基本过程和机制，以及如何使用建模、仿真和断层扫描来优化这些过程。此外，还讨论了压延对各种阳极和阴极活性材料的影响。本综述有助于更深入地了解压延工艺-结构-性能之间的关系，以及如何优化它们以提高锂离子电池的性能。

更新日期：2023-05-26

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