静电纺PAN/CNCs锂离子电池隔膜复合材料的碳化工艺探究  

Study on Carbonization Process of Electrospun PAN/CNCs Battery Separator Composites

作　　者：史东 苏蕊颖 毕淑敏 范业萌 贾清秀[1] SHI Dong;SU Ruiying;BI Shumin;FAN Yemeng;JIA Qingxiu(School of Materials Design and Engineering,Beijing Institute of Fashion Technology,Beijing 100029,China;China Nonwoven&Industrial Textiles Association,Beijing 100020,China)

机构地区：[1]北京服装学院材料设计与工程学院,北京100029 [2]中国产业用纺织品行业协会,北京100020

出　　处：《北京服装学院学报（自然科学版）》2024年第4期33-40,共8页Journal of Beijing Institute of Fashion Technology：Natural Science Edition

基　　金：北京市科技新星计划项目(20220484213);北京市优秀人才培养资助青年拔尖个人项目。

摘　　要：隔膜是锂离子电池结构中的关键组件,开发以生物基原料为主的电池隔膜对电池行业的绿色可持续发展有重要意义。本文以纤维素纳米晶(CNCs)和聚丙烯腈(PAN)为主要材料,通过静电纺丝技术制备PAN/CNCs复合纤维膜,并对所得纤维膜进行预氧化及碳化处理,得到碳化复合膜。对所得碳化复合膜的结构与性能进行测试分析,探究电纺溶液组成、聚乙烯吡咯烷酮(PVP)添加和预氧化-碳化工艺参数对其结构性能的影响。结果表明,PAN/CNCs质量比、PVP的加入和预氧化温度对复合膜形貌结构影响很大,而碳化温度则会影响复合膜的石墨化程度和电导率。The separator is a key component in the structure of lithium-ion batteries.Developing battery separators primarily using bio-based materials is of great significance for the green and sustainable development of the battery industry.In this study,cellulose nanocrystals(CNCs)and polyacrylonitrile(PAN)were used as the primary materials to prepare PAN/CNCs composite fiber membranes via electrospinning technology,and the obtained fiber membranes were pre-oxidized and carbonized to to produce carbonized composite membranes.The structure and performance of the resulting carbonized composite membranes were tested and analyzed,exploring the effects of the electrospinning solution composition,the addition of PVP,and pre-oxidation-carbonization process parameters on their structure and properties.The results indicated that the PAN/CNCs mass ratio,the addition of PVP,and pre-oxidation temperature significantly influenced the morphology and structure of the composite membranes,while the carbonization temperature affected the degree of graphitization and electrical conductivity of the composite membranes.

关 键 词：PAN/CNC复合纤维膜 锂离子电池隔膜 静电纺丝 碳化工艺 

分 类 号：TS102[轻工技术与工程—纺织工程] TM912[轻工技术与工程—纺织科学与工程]