NMP材料浓度对磷酸铁锂电池性能的影响  

Effects of NMP concentration on the performance of lithium iron phosphate battery

作　　者：王萍[1] 王菲[1] 崔莉[2] WANG Ping;WANG Fei;CUI Li(Tangshan Vocational College,Tangshan Hebei 063000,China;Hebei Normal University of Science&Technology,Qinhuangdao Hebei 066004,China)

机构地区：[1]唐山职业技术学院,河北唐山063000 [2]河北科技师范学院,河北秦皇岛066004

出　　处：《电源技术》2018年第12期1799-1801,共3页Chinese Journal of Power Sources

基　　金：河北省教育厅优秀青年基金专项资助(SY13105)

摘　　要：采用水性粘结剂LA132制备N-甲基吡咯烷酮(NMP)。磷酸铁锂(LiFePO_4)电池正极片添加NMP的含量分别为0、1%、2%和3%(质量分数),测试并分析NMP的添加量对正极片粘附力、柔韧性和电化学性能的影响。结果表明:添加NMP可以提高正极片的粘附力,增加成膜后极片的柔韧性;当NMP添加量小于1%时,正极片充放电特性和放电比容量不受影响,电池循环容量降低9%。N-methyl pyrrolidone(NMP)was prepared by water binder LA132 system.The content of NMP which added in anode in lithium iron phosphate(LiFePO4)battery was 0%,1%,2%and 3%.The effect of NMP content on the adhesion,flexibility and electrochemical performance of the cathode was tested and analyzed.The results showed that the adhesion of the cathode and the flexibility of the film were increased by adding NMP.When the content of NMP was less than 1%,the discharge specific capacity and the charge and discharge characteristics of the cathode were not affected by the active material,and the cell cycle capacity was less than 9%.

关 键 词：N-甲基吡咯烷酮 LIFEPO4 充放电 

分 类 号：TM912[电气工程—电力电子与电力传动]