Advancements and challenges in polymer-based separators for lithium-ion batteries

Abstract

Recently, polymer-based separators have brought significant advances in energy storage devices. This review provides a comprehensive overview of the substantial developments and persistent challenges of membrane separators used in lithium-ion battery (LIB) systems, focusing on the role and innovation surrounding polymer-based membrane separators. The article highlights the critical role of membrane separators in improving battery performance, safety, and lifetime. The article emphasizes the importance of the work of readers in this field, as their contributions are also essential and indispensable in shaping the future of battery technologies. The article introduces the latest advances in ultra-high molecular polyethylene (UHMWPE), polypropylene (PP), polyvinylidene fluoride (PVDF), polyurethane (PU), polyimide (PI) … and new polymer composite materials such as carbon nanotubes (CNTs) and polysulfone (PSF), graphene oxide (GO) with polybenzimidazole (PBI), polystyrene (PS), etc… ensuring that readers are well-informed about the latest trends in energy storage. The review also evaluates various strategies for enhancing the chemical and thermal stability, ionic conductivity, and mechanical properties of membranes. In addition, it also highlights future directions to overcome limitations, such as dendrite growth and thermal instability, which have significant potential for the energy storage field. It highlights the potential of new polymer materials, inspiring hope and optimism about the exciting possibilities in separation technology research and development. These advances are pivotal in meeting the growing demand for efficient, safe, and environmentally friendly energy storage solutions, thereby opening up new horizons in the field of battery technology.