锰酸锂电池极片压实密度与材料粒度分布关系  

Relationship between compact density and particle size distribution of lithium manganese battery

作　　者：董海桃[1] 倪团结 DONG Hai-tao;NI Tuan-jie(Shanxi Institute of Mechanical&Electrical Engineering,Changzhi Shanxi 046011,China;School of Materials Science and Engineering,Northeastern University,Shenyang Liaoning 110819,China)

机构地区：[1]山西机电职业技术学院,山西长治046011 [2]东北大学热能工程系,辽宁沈阳110819

出　　处：《电源技术》2018年第10期1493-1495,共3页Chinese Journal of Power Sources

基　　金：山西省教育厅科研基金项目(SXGH2015018)

摘　　要：为了使锰酸锂材料的粒度分布得到改善,对锰酸锂电池极片压实密度与材料粒度分布的关系进行分析。研究结果表明,当锰酸锂材料的粒度D_(10)为6.335μm、D_(50)为11.428μm、D_(90)为19.433μm,且D_(90)-D10为13.098μm时,材料的粒度分布比较集中,且此时极片的压实密度最高约为3.16 g/cm3,所对应的电池1 C的初始放电比容量约为106.2mAh/g,50次循环后其容量大约衰减4.23%,此时所得电池具有较好的性能且满足锂电池厂的相关要求。In order to make the particle size distribution of lithium manganate material could be improved,the relationship between lithium battery pole piece density and material size distribution were analyzed.Research results show that,when the size of lithium manganate material D10 is 6.335μm,D50 is 11.428μm,D90 is 19.433μm and D90-D10 is 13.098μm,the particle size distribution is more concentrated.And the compaction density of the pole piece is about 3.16 g/cm3,the initial discharge capacity of the corresponding whole cell 1 C is about 106.2 mAh/g.Its capacity is approximately 4.23%after 50 cycles.Then the battery is with good performance and could meet the requirements of lithium power plant.

关 键 词：锰酸锂电池 压实密度 粒度分布 计算机图像 

分 类 号：TM912[电气工程—电力电子与电力传动]