Advancements in polymer materials for high-energy-density lithium-ion batteries

Polymers are anticipated to address the bottleneck challenges in high-energy-density batteries due to their inherent flexibility, tunable structures, and ease of functionalization. In this review, we first analyze the requirements for cathode, anode, and electrolyte materials in high-energy-density batteries, alongside the existing challenges within current material systems. We then summarize and discuss the current status and developmental trends of polymer materials in these domains. Furthermore, we elucidate the challenges faced by polymer materials in high-energy-density batteries, including issues related to stability, ion transport, processing, and system integration. Finally, we present an overview of the current landscape and regulatory considerations for polymer materials in high-energy-density lithium batteries, proposing future development directions in this field. The insights provided are expected to facilitate the application of polymer materials in lithium batteries and advance the development of high-energy-density lithium battery technologies.