Modulating Phase Separation via Multiple Hydrogen Bonding in Polyurethane-Based Gel Polymer Electrolytes for All-Solid-State Supercapacitors.

ABSTRACT: Hybrid gel polymer electrolytes (GPEs) based on thermoplastic polyurethane (PU) and ionic liquid (IL) are successfully synthesized by incorporating silica nanoparticles through a one-pot in situ sol-gel process. The ionic liquid, 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide [(BMIM)⁺(TFSI)^-], acts as a miscible solvent for both the hard and soft segments of PU, simultaneously serving as an ionic charge carrier and plasticizer. Fourier transform infrared (FTIR) Spectroscopy and differential scanning calorimetry (DSC) analyses reveal that increasing the IL concentration weakens the hydrogen bonding interactions between hard-hard and hard-soft segments, leading to a reduction in glass transition temperature and suppression of phase separation. Furthermore

SUBMITTER: Handayani PL 

PROVIDER: S-EPMC12825347 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature