Sun Weifu, Ding Zhaoyin, Wen Hongyuan, Zhao Jiayu, Su Yuefeng, Qiu Jiali
Advanced Technology Research Institute, Beijing Institute of Technology, Jinan 250307, China.
State Key Laboratory of Explosion Science and Safety Protection, School of Mechatronic Engineering, Beijing Institute of Technology, Beijing 100081, China.
ACS Omega. 2025 Aug 29;10(35):40009-40019. doi: 10.1021/acsomega.5c04122. eCollection 2025 Sep 9.
The cutting-edge development of lithium-ion batteries (LIBs) focuses on improving the security and cycle performance. The separator film plays an important role in cell performance and long-term service life, which requires both flame retardancy and mechanical strength. In this work, a one-step electrospinning technique has been adopted to prepare a novel polyvinylidene fluoride/cellulose acetate/ammonium polyphosphate membrane acting as a separator in the LIBs. The electrospinning conditions have been first optimized mainly by varying the concentration of precursor solution. The electrospun membranes have been characterized using scanning electron microscopy and infrared spectroscopy. The porosity, electrolyte uptake capability, the electrolyte wettability, thermal stability, and tensile properties have also been measured.
锂离子电池（LIBs）的前沿发展集中在提高安全性和循环性能上。隔膜在电池性能和长期使用寿命中起着重要作用，这就要求其兼具阻燃性和机械强度。在这项工作中，采用了一步电纺技术制备了一种新型的聚偏氟乙烯/醋酸纤维素/聚磷酸铵膜，用作锂离子电池的隔膜。首先主要通过改变前驱体溶液的浓度来优化电纺条件。已使用扫描电子显微镜和红外光谱对电纺膜进行了表征。还测量了孔隙率、电解液吸收能力、电解液润湿性、热稳定性和拉伸性能。
