biostudies-literatureUnknown4(1)Olmedo-Martinez JLSolid polymer electrolytes that combine both a high lithium-ion transference number and mechanical properties at high temperatures are searched for improving the performance of batteries. Here, we show a salt-free all-polymer nanocomposite solid electrolyte for lithium metal batteries that improves the mechanical properties and shows a high lithium-ion transference number. For this purpose, lithium sulfonamide-functionalized poly(methyl methacrylate) nanoparticles (LiNPs) of very small size (20-30 nm) were mixed with poly(ethylene oxide) (PEO). The morphology of all-polymer nanocomposites was first investigated by transmission electron microscopy (TEM), showing a good distribution of nanoparticles (NPs) even at high contents (50 LiNP wt %). The crystallinity of PEO was investigated in detaACS polymers Au77-85https://www.ebi.ac.uk/biostudies/studies/S-EPMC10870747biostudies-literatureAll-Polymer Nanocomposite as Salt-Free Solid Electrolyte for Lithium Metal Batteries.PMC10870747Olmedo-Martinez JLVillaluenga IDel Olmo RMuller AJForsyth MGallastegui AMecerreyes DfalseAll-Polymer Nanocomposite as Salt-Free Solid Electrolyte for Lithium Metal Batteries.Solid polymer electrolytes that combine both a high lithium-ion transference number and mechanical properties at high temperatures are searched for improving the performance of batteries. Here, we show a salt-free all-polymer nanocomposite solid electrolyte for lithium metal batteries that improves the mechanical properties and shows a high lithium-ion transference number. For this purpose, lithium sulfonamide-functionalized poly(methyl methacrylate) nanoparticles (LiNPs) of very small size (20-30 nm) were mixed with poly(ethylene oxide) (PEO). The morphology of all-polymer nanocomposites was first investigated by transmission electron microscopy (TEM), showing a good distribution of nanoparticles (NPs) even at high contents (50 LiNP wt %). The crystallinity of PEO was investigated in deta2024-01-01T00:00:00Z2024 Feb2025-04-19T23:13:15.953Z2025-04-19T23:13:15.953ZS-EPMC108707473837172710.1021/acspolymersau.3c00035