Jo, Sunhee Yoon, Ki Ro Lim, Youngjoon Kwon, Taehyun Kang, Yun Sik Sohn, Hyuntae Choi, Sun Hee Son, Hae Jung Kwon, Sung Hyun Lee, Seung Geol Jang, Seung Soon Lee, So Young Kim, Hyoung-Juhn Kim, Jin Young 2024-01-19T14:03:15Z 2024-01-19T14:03:15Z 2021-10-21 2021-08 2366-9608 https://pubs.kist.re.kr/handle/201004/116648 Recent interest in polymer electrolyte membranes (PEMs) for fuel cell systems has spurred the development of infiltration technology by which to insert ionomers into mechanically robust reinforcement structures by solution casting in order to produce a cost effective and highly efficient electrolyte. However, the results of the fabrication process often continue to present challenges related to the structural complexity and self-assembly dynamics between the hydrophobic and hydrophilic parts of the constituents which in turn, necessitates additional processing steps and increases production costs. Here, a single-step process is reported for highly compact polymeric composite membranes (PCMs), fabricated using a centrifugal colloidal casting (C3) method. Combined structural analyses as well as coarse-grained molecular dynamics simulations are employed to determine the micro-/macroscopic structural characteristics of the fabricated PCMs. These findings indicate that the C3 method is capable of forming highly dense ionomer matrix-reinforcement composites consisting of microphase-separated ionomer structures with tailored crystallinity and ionic cluster sizes. An outcome that is very unlikely with the single-step coating steps in conventional methods. These structural attributes ensure PCMs with better proton conductivity, greater strain stability, and lower gas crossover properties compared to commercial pristine membranes, expanding their possible range of applicability to PEMs. English WILEY-V C H VERLAG GMBH Single-Step Fabrication of Polymeric Composite Membrane via Centrifugal Colloidal Casting for Fuel Cell Applications Article 10.1002/smtd.202100285 1 SMALL METHODS, v.5, no.8 SMALL METHODS 5 8 N scie scopus 000671566500001 2-s2.0-85109374306 Chemistry, Physical Nanoscience & Nanotechnology Materials Science, Multidisciplinary Chemistry Science & Technology - Other Topics Materials Science Article NAFION MEMBRANES TRANSPORT-PROPERTIES IONOMER MEMBRANES WATER MORPHOLOGY SURFACE DURABILITY ANGLE centrifugal colloidal casting fuel cells perfluorosulfonic acid polymer electrolyte membranes polymeric composite materials