Kim, Hansoo Jeon, Sungkwon Choi, Juyeon Park, Young Sang Park, Sung-Joon Lee, Myung-Seok Nam, Yujin Park, Hosik Kim, MinJoong Lee, Changsoo An, Si Eon Jung, Jiyoon Kim, Seunghwan Kim, Jeong F. Cho, Hyun-Seok Lee, Albert S. Lee, Jung-Hyun 2024-11-30T07:30:38Z 2024-11-30T07:30:38Z 2024-11-30 2024-11 1936-0851 https://pubs.kist.re.kr/handle/201004/151249 High-performance and durable anion exchange membranes (AEMs) are critical for realizing economical green hydrogen production through alkaline water electrolysis (AWE) or AEM water electrosysis (AEMWE). However, existing AEMs require sophisticated fabrication protocols and exhibit unsatisfactory electrochemical performance and long-term durability. Here we report an AEM fabricated via a one-pot, in situ interfacial Menshutkin reaction, which assembles a highly cross-linked polymer containing high-density quaternary ammoniums and nanovoids inside a reinforcing porous support. This structure endows the membrane with high anion-conducting ability, water uptake (but low swelling), and mechanical and thermochemical robustness. Consequently, the assembled membrane achieves excellent AWE (0.97 A cm-2 at 1.8 V) and AEMWE (5.23 A cm-2 at 1.8 V) performance at 5 wt % KOH and 80 degrees C, significantly exceeding that of commercial and previously developed membranes, and excellent long-term durability. Our approach provides an effective method for fabricating AEMs for various energy and environmental applications. English American Chemical Society Interfacially Assembled Anion Exchange Membranes for Water Electrolysis Article 10.1021/acsnano.4c10212 1 ACS Nano, v.18, no.47, pp.32694 - 32704 ACS Nano 18 47 32694 32704 N scie scopus 001354983700001 2-s2.0-85209256001 Chemistry, Multidisciplinary Chemistry, Physical Nanoscience & Nanotechnology Materials Science, Multidisciplinary Chemistry Science & Technology - Other Topics Materials Science Article QUATERNARY AMMONIUM PERFORMANCE HYDROGEN SEPARATOR STABILITY HYDROXIDE BEHAVIOR green hydrogen water electrolysis anion exchangemembrane interfacial reaction Menshutkin reaction