Electrode materials matching PEO electrolyte in lithium batteries: Progress and perspectives

PEO-based solid electrolytes (SEs) have become one of the highly sought-after solid electrolytes due to their easy processing solutions, superior contact ability, and low cost. All-solid-state lithium batteries (ASSLBs) based on PEO-based SEs have demonstrated excellent performance in terms of safety, energy density, and cycling performance. Therefore, their development is of great significance to promote further progress in high-performance energy storage systems. Electrodes and electrolytes are the two core components of ASSLBs, and while research focuses mainly on their intrinsic properties, the impact of the matching relationship between the two on the overall performance of the battery has seldom been comprehensively and thoroughly investigated. This review aims to meticulously categorize the electrode materials that can be matched with PEO-based SEs, and elaborate the interactions between the two and their impact on the battery performance. Finally, the purpose of this review is to classify the electrode materials that can be matched with PEO-based SEs in detail, and to elaborate on the interaction between electrolyte and electrode, interface problems, and the impact of their relationship on ASSLBs performance.