锂离子电池用纤维素材料及其隔膜制备技术的研究进展

随着新能源行业的快速兴起，高性能锂离子电池成为当下的研究热点。作为锂离子电池的重要组成部分之一，隔膜不仅决定了电池的内部结构和内阻，而且对电池的容量、循环和安全性能起着至关重要的作用。纤维素材料来源丰富、环境友好，由纤维素制备的隔膜具有高孔隙率、高比表面积和高离子电导率，有希望成为传统聚烯烃隔膜的优良替代品。概括了不同种类的纤维素在锂离子电池膈膜中的应用进展，对纤维素膈膜的制备技术及其性能进行了全面的讨论和总结，最后，提出了纤维素锂离子电池隔膜领域有待解决的问题以及纤维素在隔膜领域的发展前景。

Research Advances on Cellulose Materials and Its Preparation Technologies of Separators for Lithium-Ion Battery

With the rapid development in new energy industry, the research of high-performance lithium-ion battery has become a hot spot nowadays. As one of the most important components of lithium-ion batteries, separator not only determines the internal structure and internal resistance of lithium-ion batteries, but also plays a crucial role in the capacity, cycling and safety performance of the batteries. Cellulosic materials are abundantly sourced and environmentally friendly, and separators prepared from cellulose-based materials have high porosities, large surface-to-volume ratio, and high ionic conductivity, promising to be an excellent candidate for replacing conventional polyolefin separators. Different types of cellulose used in lithium-ion battery separators are outlined, with a comprehensive discussion and summary provided on the preparation techniques of cellulose separators and their performance. Finally, the problems to be solved in the field of cellulose lithium-ion battery separators and the development prospects of cellulose in the separator field are presented.