Electrochemical Characteristics of Elastic, Non-Polar Polyurethane-Based Polymer Gel Electrolyte for Separator-Less Lithium-Ion Batteries

Lithium-ion batteries (LIBs) have undergone countless enhancements in the past decade, mainly improvements basic components: electrodes, electrolyte, and separator. The separator, which acts as a physical barrier between two does not directly participate charge energy storage.However, it is involved safety, form factor, packaging density of LIBs. While occupies relatively less internal space than other components, separator can be replaced with active materials such gel polymer electrolytes (GPEs) serve both electrolyte electrodes. GPEs potentially minimize risks liquid electrolytes, including flammability, leakage, explosion. Here we report characteristics polyurethane (PU)-based swollen concentrated solutions separator-less cells. poreless PU-based conducts lithium ions, while preventing short-circuits. This attributed to presence soft segments, allow ion transport, hard ensure mechanical integrity. Electrochemical measurements carried out LFP half cells symmetric Li revealed that were operable 0.2 C 1 rates, during long term cycling, achieved stable electroplating overpotential, number cycles increased.