title: Aniosotropically organized LDH on PVDF: a geometrically templated electrospun substrate for advanced anion conducting membranes.
abstract: A bioinspired geometric templating of an electrospun PVDF substrate with hexagonal platelets of Mg-Al layered double hydroxide (LDH), an intrinsic anion conductor, is presented. The distinctive morphology restructures the internal pore geometry and modulates the dynamic wetting profile of PVDF, transforming it into a highly functional substrate for SAFC anion conducting membranes. The membrane fabricated with PVDF-LDH substrate exhibited exceptionally high durability (>140 °C), high anionic conductivity, ion exchange capacity (IEC), restricted swelling, and improved tensile strength, overcoming critical challenges associated with PVDF electrospun substrates and validating its immense potential as a high-temperature-stable and durable substrate for advanced fuel cell membrane applications.
authors.affiliation: †Chemical Resources Laboratory, Tokyo Institute of Technology, Nagatsuta 4259, Midori-ku, Yokohama, Kanagawa 226-8503, Japan.
authors.forename: G S
authors.initials: GS
authors.lastname: Sailaja
authors.forename: Peilin
authors.initials: P
authors.lastname: Zhang
authors.forename: Gopinathan M
authors.initials: GM
authors.lastname: Anilkumar
authors.affiliation: †Chemical Resources Laboratory, Tokyo Institute of Technology, Nagatsuta 4259, Midori-ku, Yokohama, Kanagawa 226-8503, Japan.
authors.forename: Takeo
authors.initials: T
authors.lastname: Yamaguchi
mesh_terms: D000838:Anions / Q000737:chemistry*; D004553:Electric Conductivity; D011211:Electric Power Supplies; D055664:Electrochemical Techniques; D006878:Hydroxides / Q000737:chemistry*; D007474:Ion Exchange; D008567:Membranes, Artificial; D011145:Polyvinyls / Q000138:chemical synthesis / Q000737:chemistry*; D013718:Tensile Strength; D005465:Fluorocarbon Polymers
chemical_list: D000838:Anions; D006878:Hydroxides; D008567:Membranes, Artificial; D011145:Polyvinyls; C024865:polyvinylidene fluoride; D005465:Fluorocarbon Polymers; C031356:hydroxide ion
keywords: PVDF-LDH substrate; electrospinning; geometric templating; pore-filling anion conducting membrane; solid-state alkaline fuel cell