锂电池磷酸铁锂系正极极片干燥特性研究  

Drying characteristics of LiFePO;series electrode sheets for lithium batteries

作　　者：王林帅 李甜 田清泉 WANG Lin-shuai;LI Tian;TIAN Qing-quan(School of Chemistry and Materials Science,Weinan Normal University,Shaanxi Province Engineering Research Center of Coal Conversion Alcohol,Weinan 714099,China)

机构地区：[1]渭南师范学院化学与材料学院,陕西省煤基低碳醇转化工程研究中心,陕西渭南714099

出　　处：《化学工程师》2022年第1期72-76,共5页Chemical Engineer

基　　金：陕西省教育厅科学研究计划项目(No.18JK0273);大学生创新创业训练计划创新训练项目(No.S202010723080)。

摘　　要：极片干燥是动力电池制造环节最复杂、能耗最大的单元操作之一。对其物质及能量输运的研究,可以有效提高干燥设备效率,降低厂家的生产成本。以磷酸铁锂体系为正极极片材料,探究了恒温干燥和热风对流干燥中不同温度和厚度对极片干燥的影响。研究结果表明,恒温干燥实验中同一厚度的极片温度越高,干燥的时间越短。同一温度下极片厚度越薄,干燥的时间越短。当热风干燥温度为105~110℃时,干燥效率较高,且获得极片不易脱落。热风对流干燥实验中温度和厚度对极片干燥的影响规律与恒温干燥实验基本一致。Polar plate drying is one of the most complex and energy consumptions of the power battery manufacturing operation.Research on its material and energy transport can effectively improve the efficiency of drying equipment and reduce the production cost of manufacturers.With the lithium iron phosphate system as the positive electrode sheet material,the effect of different temperature and thickness on the electrode drying were investigated.The results showed that the higher the polar sheet temperature of the same thickness,the shorter the drying time.The thinner the polar sheet thickness at the same temperature,the shorter the drying time.When the hot air-drying temperature is 105~110℃,the drying efficiency is high,and the obtained pole sheet is not easy to shed.The influence law of temperature and thickness on polar sheet drying is basically consistent with the constant temperature drying experiment.

关 键 词：锂电池 正极极片 热风对流干燥 涂布干燥 

分 类 号：TQ028.6[化学工程]