Electronically Conductive Polymer Enhanced Solid State Polymer Electrolytes for All Solid-State Lithium Batteries

作者：Gulam Smdani, M. Hasan, A. A. Razzaq, Weibing Xing · 发表于：ECS Meeting Abstracts · 年份：2025 · DOI：10.1149/ma2025-013463mtgabs

All-solid-state lithium batteries (ASSLBs) have gained enormous interest due to their potential high energy density, high performance, and inherent safety characteristics for advanced energy storage systems.1 Although solid-state ceramic (inorganic) electrolytes (SSCEs) have high ionic conductivity and high electrochemical stability, they experience some significant drawbacks, such as poor electrolyte/electrode interfacial properties and poor mechanical characteristics (brittle, fragile), which can hinder their adoption for commercialization.2, 3 Typically, SSCE-based ASSLBs require high cell stack pressures exerted by heavy fixtures for regular operation, which can reduce the energy density of the overall battery packages.4, 5 Polymer-SSCE composite electrolytes can provide inherently good interfacial contacts with the electrodes that do not require high cell stack pressures.6 In this study,7 we explore the feasibility of incorporating an electronically and ionically conducting polymer, polypyrrole (PPy), into a polymer backbone, polyvinylidene fluoride-co-hexafluoropropylene (PVDF-HFP). The electronically-conductive-polymer-incorporated composite electrolyte showed superior room temperature ionic conductivity and electrochemical performance than the baseline sample (without PPy) (Figure 1). The PPy-incorporated polymer electrolyte demonstrated a high resilience to high temperature operation compared with the liquid-electrolyte counterpart. This performance advantage can ...