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Comparison between computer simulations and experimental data for high-rate discharges of plastic lithium-ion batteries

机译:塑料锂离子电池高倍率放电的计算机仿真与实验数据之间的比较

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摘要

COmputer simulations are compared with experimental data for Bellcore PLION cells using the graphite/1 M LiPF_6 in EC:DMC (2:1)/LiMn_2O_4 system. Cells with different thicknesses and higher active material loadings were explored using the mathematical model to understand beetter the transport processes in the lasticized polymer electrolyte system. A better description of the inic conductivity is employed based on new conductivity data. Improvements in the agreement between the simulations and exerimental data are obtaiined by using the contact resistance as an adjustable parameter for different cells, whose values varies from 25 to 35 OMEGA -cm~2 Reducing the salt diffusion coeffiencent by a factor of two at the higher discharge rates was necessary to obtain better agreement with the experimental data.
机译:在EC:DMC(2:1)/ LiMn_2O_4系统中,使用石墨/ 1 M LiPF_6将计算机模拟与Bellcore PLION电池的实验数据进行了比较。使用数学模型探索了具有不同厚度和较高活性物质负载的电池,以了解更佳的在增韧的聚合物电解质系统中的传输过程。基于新的电导率数据,可以更好地描述初始电导率。通过使用接触电阻作为不同单元的可调整参数来获得模拟值和实验数据之间一致性的改进,其值从25到35 OMEGA -cm〜2不等。将盐扩散系数降低2倍。为了获得与实验数据更好的一致性,放电速率是必要的。

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