Aniosotropically Organized LDH on PVDF: A Geometrically Templated Electrospun Substrate for Advanced Anion Conducting Membranes

作者：Sailaja G S; Zhang Peilin; Anilkumar Gopinathan M; Yamaguchi Takeo^*

来源：ACS Applied Materials & Interfaces, 2015, 7(12): 6397-6401.

DOI：10.1021/acsami.5b00532

• PVDF-LDH substrate
• electrospinning
• geometric templating
• pore-filling anion conducting membrane
• solid-state alkaline fuel cell

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 degrees 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.

• 出版日期2015-4-1