Designing Boron‐Based Single‐Ion Gel Polymer Electrolytes for Lithium Batteries by Photopolymerization

Single-ion lithium conducting polymer electrolytes based on delocalized borate groups are designed and synthesized by rapid UV-photopolymerization. For this purpose, three different functional boron sp3 anionic monomers, containing fluorinated, ethoxy, or a blend of both functionalities synthesized. These monomers photopolymerized in the presence poly(ethylene glycol) dimethacrylate crosslinker tetraglyme as plasticizer. By method, gel endowed with single-ion conduction prepared (SIGPEs). The impact generated addition plasticizer electrochemical ion properties analyzed detail. show high ionic conductivity (1.71 × 10−4 S cm−1 at 25 °C) transference number values (up to 0.85). Finally, they investigated solid metal symmetrical cells showing good performance (<0.85 V ±0.2 mA cm−2 for 175 h).