Performance of lithium ion batteries whose electrodes are composed of particles of different sizes is studied. Simplified model developed in (Henquín and Aguirre, AIChE J. 2015; 61:90–102) is extended and the simulations are compared with experiments from the literature so as to validate this new model. The differences in current density observed in particles of different sizes, which are in contact, depend on particle size and state of charge. Internal particle to particle discharge currents are observed during relaxation times. A parametric study of the applied current and particle sizes of electrodes is performed to evaluate cell performance, with emphasis on cell voltage and final capacity measurement. The evolution of reaction rates on the surface of electrode particles and their corresponding states of charge are depicted. An analysis of relaxation times in terms of cell voltage, current density, equilibrium potentials, and overpotentials is included. © 2017 American Institute of Chemical Engineers AIChE J, 2017

中文翻译：

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考虑粒度分布的锂电池基于模型的分析

研究了电极由不同大小的颗粒组成的锂离子电池的性能。（Henquín和Aguirre，AIChE J.2015; 61：90–102）进行了扩展，并将仿真与文献中的实验进行了比较，以验证该新模型。在接触的不同尺寸颗粒中观察到的电流密度差异取决于颗粒尺寸和电荷状态。在弛豫时间内观察到内部颗粒间的放电电流。对施加的电流和电极的粒径进行了参数研究，以评估电池性能，重点是电池电压和最终容量测量。描绘了电极颗粒表面上反应速率的演变及其相应的电荷状态。包括了关于电池电压，电流密度，平衡电势和过电势的弛豫时间的分析。©2017美国化学工程师学会AIChE的Ĵ，2017年