中国造纸学报2025，Vol.40Issue(1)：49-58,10.DOI:10.11981/j.issn.1000-6842.2025.01.49
芳纶纳米纤维增强纸基锂离子电池隔膜的制备及性能研究
Study on Preparation and Performance of Aramid Nanofiber-reinforced Paper-based Lithium-ion Battery Separators
摘要
Abstract
In order to improve the electrolyte wettability and thermal dimensional stability of lithium-ion battery separators,high-temperature-resistant bleached sulphate-flour broadleaf wood pulp(LBKP)/aramid nanofibers(ANFs)paper-based lithium-ion battery separators were ob-tained via papermaking process,which were prepared by using LBKP and ANFs as raw materials.The effects of the mass fraction of ANFs on the pore structure,mechanical properties,thermal dimensional stability,and electrolyte wettability of the LBKP/ANFs paper-based lithium-ion battery separators were mainly investigated by micro-morphological characterization,tensile test,contact angle test and other analytical means.The results showed that when the LBKP beating degree was 80 ° SR and the mass fraction of ANFs was 20％,the prepared LBKP/ANFs-20 paper-based lithium-ion battery separator had the best performance,with a porosity of 55.5％,a liquid absorption rate of 145.9％,a tensile strength of 58.9 MPa,and basically no dimensional shrinkage at 180 ℃.The lithium cobaltate/lithium(LiCoO2/Li)battery assem-bled with LBKP/ANFs-20 paper-based lithium-ion battery separator had a higher initial discharge specific capacity(168.07 mAh/g)at 0.2 C rate,and the capacity retention rate after 50 charge/discharge cycles was 91.7％,higher than that of the lithium-ion battery assembled with the commercial polyolefin diaphragm Celgard 2325(68.2％),which exhibited good rate performance and charge/discharge cycle perfor-mance.关键词
纸基锂离子电池隔膜/芳纶纳米纤维/耐高温Key words
paper-based separator/aramid nanofibers/high-temperature-resistant分类
轻工业引用本文复制引用
刘添裕,杨扬,黄剑波,霍飞宇,刘颖,朝鲁门,刘文..芳纶纳米纤维增强纸基锂离子电池隔膜的制备及性能研究[J].中国造纸学报,2025,40(1):49-58,10.基金项目
广州市重点研发计划项目(202206010187). （202206010187）
