Bae, Sung Yeon Kim, Seoyeon Yoo, Young Ho Kim, Jin-Seo Lee, Jieun Cho, Jinhan Yeom, Bongjun Son, Jeong Gon 2025-06-16T00:00:08Z 2025-06-16T00:00:08Z 2025-06-13 2025-11 1616-301X https://pubs.kist.re.kr/handle/201004/152613 Solid polymer electrolytes (SPE) offer advantages including compatibility with conventional electrolyte systems and mechanical flexibility; however, low ionic conductivity and high interfacial resistance present significant challenges. Here, systems are proposed that randomly crosslink all-materials constituting SPE based on diazide and develop novel flexible SPEs by covalently networking fluorinated polymers and succinonitrile. This all-material crosslinking reduces crystallinity of the constituents, thus simultaneously boosting ionic conductivity, mechanical elasticity, and adhesion strength. Solvent-assisted conformal coating ensures complete contact with the lithium surface and completely wets the porous cathode. The SPE exhibits high ionic conductivities of 4.7 mS·cm⁻¹, lithium-ion transference numbers of 0.64, and oxidation stability up to 5.29 V. It demonstrates stable lithium plating/stripping with ∼5 mV of overpotential over 1400 h in Li//Li tests and outstanding performance in Li//LFP flexible full cells, achieving discharge capacities of 136.5 mAh g⁻¹ at 3 C and maintained even after bending at 5 mm or cutting in half. English John Wiley & Sons Ltd. All-Material Crosslinked Solid Polymer Electrolytes for High-Performance and Flexible Lithium Metal Battery Article 10.1002/adfm.202508573 1 Advanced Functional Materials, v.35, no.47 Advanced Functional Materials 35 47 Y scie scopus 001499920700001 2-s2.0-105006913209 Chemistry, Multidisciplinary Chemistry, Physical Nanoscience & Nanotechnology Materials Science, Multidisciplinary Physics, Applied Physics, Condensed Matter Chemistry Science & Technology - Other Topics Materials Science Physics Article TRANSFERENCE NUMBER LINKING CARBON flexible battery interfacial contact solid polymer electrolytes all-materials crosslinking lithium metal batteries