In this work, we study the design aspects and process dynamics of solvent removal from Lithium-ion battery electrode coatings. For this, we use a continuum level mathematical model to describe the physical phenomenon of cathode drying involving coupled simultaneous heat and mass transfer with phase change. Our results indicate that around 90% of solvent is removed in less than half of the overall drying time. We study the effect of varying temperature and air velocity on the drying process. We show that the overall drying energy can be reduced by at least 50% by using a multi-zone drying process. Also, the peak solvent flux can be reduced by at least 40%. We further present the effect of using an aqueous solvent instead of N-Methyl-2-pyrrolidone (NMP) in electrode drying. Our results indicate that Water dries nearly 4.5 times faster as compared to NMP and requires nearly 10 times less overall drying energy per kg of solvent.

在这项工作中，我们研究了从锂离子电池电极涂层中去除溶剂的设计方面和过程动力学。为此，我们使用连续水平数学模型来描述阴极干燥的物理现象，该现象涉及同时发生的传热和传质与相变的耦合。我们的结果表明，在不到总干燥时间的一半的时间内，大约90％的溶剂被去除了。我们研究了温度和空气速度变化对干燥过程的影响。我们显示，通过使用多区域干燥工艺，可以将整体干燥能量降低至少50％。而且，峰值溶剂通量可以降低至少40％。我们进一步介绍了使用水性溶剂代替N的效果-甲基-2-吡咯烷酮（NMP）在电极中干燥。我们的结果表明，与NMP相比，水的干燥速度快了近4.5倍，每千克溶剂所需的总干燥能量减少了近10倍。