Jang, Segeun Her, Min Kim, Sungjun Jang, Jue-Hyuk Chae, Ji Eon Choi, Jiwoo Choi, Mansoo Kim, Sang Moon Kim, Hyoung-Juhn Cho, Yong-Hun Sung, Yung-Eun Yoo, Sung Jong 2024-01-19T19:04:10Z 2024-01-19T19:04:10Z 2021-09-04 2019-09-25 1944-8244 https://pubs.kist.re.kr/handle/201004/119558 The recent development of ultrathin anion exchange membranes and optimization of their operating conditions have significantly enhanced the performance of alkaline-membrane fuel cells (AMFCs); however, the effects of the membrane/electrode interface structure on the AMFC performance have not been seriously investigated thus far. Herein, we report on a high-performance AMFC system with a membrane/electrode interface of novel design. Commercially available membranes are modified in the form of well-aligned line arrays of both the anode and cathode sides by means of a solvent-assisted molding technique and sandwich-like assembly of the membrane and polydimethylsiloxane molds. Upon incorporating the patterned membranes into a single-cell system, we observe a significantly enhanced performance of up to similar to 35% compared with that of the reference membrane. The enlarged interface area and reduced membrane thickness from the line-patterned membrane/electrode interface result in improved water management, reduced ohmic resistance, and effective utilization of the catalyst. We believe that our findings can significantly contribute further advancements in AMFCs. English American Chemical Society POLYMER ELECTROLYTE MEMBRANE ANION-EXCHANGE MEMBRANES MICROPOROUS LAYER BIPOLAR PLATES Membrane/Electrode Interface Design for Effective Water Management in Alkaline Membrane Fuel Cells Article 10.1021/acsami.9b08075 1 ACS Applied Materials & Interfaces, v.11, no.38, pp.34805 - 34811 ACS Applied Materials & Interfaces 11 38 34805 34811 scie scopus 000488322900025 2-s2.0-85072687333 Nanoscience & Nanotechnology Materials Science, Multidisciplinary Science & Technology - Other Topics Materials Science Article POLYMER ELECTROLYTE MEMBRANE ANION-EXCHANGE MEMBRANES MICROPOROUS LAYER BIPOLAR PLATES dual-side patterning anion exchange membrane alkaline membrane fuel cell membrane-electrode assembly water management