熔盐法合成电池材料残余锂盐的再利用  

Reuse of residual lithium salts during synthesizing battery material by molten salt method

作　　者：陈占军 何雯 黄文达 彭秧锡 CHEN Zhan-jun;HE Wen;HUANG Wen-da;PENG Yang-xi(Hunan Provincial Key Laboratory of Fine Ceramics and Powder Materials, School of Material and Environmental Engineering, Hunan Institute of Humanities, Science and Technology, Loudi , Hunan 417000, China;Jiangxi Funeng Battery Collaborative Innovation Co., Ltd., Yichun, Jiangxi 336000, China)

机构地区：[1]湖南人文科技学院材料与环境工程学院,精细陶瓷与粉体材料湖南省重点实验室,湖南娄底417000 [2]江西省福能动力电池协同创新有限公司,江西宜春336000

出　　处：《电池》2018年第3期210-212,共3页Battery Bimonthly

基　　金：国家自然科学基金(51602101),湖南省自然科学基金(2016JJ4044),江西省重点研发计划(20161ACE50012),湖南省科技计划项目(2016TP1028)

摘　　要：在熔融盐法制备LiNi_(0.5)Co_(0.2)Mn_(0.3)O_2(NCM523)正极材料过程中,对残余的熔融盐进行回收利用。通过XRD、SEM和电化学性能测试等,考察二次利用的正极材料的性能。回收熔融盐合成的正极材料(NCM-R)和新鲜熔融盐所制备的正极材料(NCM-P)都具有良好的层状结构和形貌特征。NCM-P、NCM-R在3.0~4.3 V循环,10.0 C倍率比容量最大值分别为127.8 m Ah/g和125.67 m Ah/g,以1.0 C充放电,第500次循环的容量保持率分别为78.37%和76.13%。In the process of synthesizing LiNi0.5Co0.2Mn0.3O2（NCM523） material with molten salt method, the residual lithium molten salts were recycled. The performance of reused cathode material was investigated by XRD, SEM and electrochemical tests. The samples synthesized from the flesh molten salts （NCM-P） and the recycled molten salts （NCM-R） had good layer structure and morphology. When NCM-P and NCM-R were cycled in 3.0 -4. 3 V,the maximum specific capacity was 127.8 mAh/g and 125. 67 mAh/g at 10. 0 C,respectively,the capacity retention in the 500th cycle was 78.37% and 76. 13% at 1.0 C,respectively.

关 键 词：残余锂盐回收 熔融盐法 正极材料 LiNi0.5Co0.2Mn0.3O2(NCM523) 

分 类 号：TM912.9[电气工程—电力电子与电力传动]