Lee, So Young Chae, Ji Eon Choi, Jieun Park, Hyun Seo Henkensmeier, Dirk Yoo, Sung Jong Kim, Jin Young Na, Youngseung Jang, Jong Hyun Kim, Hyoung-Juhn 2024-01-19T18:04:56Z 2024-01-19T18:04:56Z 2021-09-04 2020-02 0376-7388 https://pubs.kist.re.kr/handle/201004/119040 To realize effective polymer electrolyte fuel cell (PEFC) operation under non-humidified conditions, a new self-humidifying dual exchange membrane fuel cell (DEMFC) was designed and evaluated. The DEMFC was fabricated using sequentially aligned membrane electrode assemblies (MEAs) consisting of an anion exchange membrane (AEM) and a cation exchange membrane (CEM). In this system, water simultaneously generated by the half-cell reactions at both the anode and the cathode is then supplied to the other MEA through the gas diffusion medium and the bipolar plate in the DEMFC under completely dry conditions, resulting in high cell performance. Also, durability of a DEMFC five-cell stack was tested by accelerated on/off operation under fully dry conditions. No cell degradation occurred over 50 cycles (200 h), indicating that this DEMFC design provides an effective approach for constructing practical miniaturized PEFCs that do not require external humidification systems. English ELSEVIER Dual exchange membrane fuel cell with sequentially aligned cation and anion exchange membranes for non-humidified operation Article 10.1016/j.memsci.2019.117745 1 JOURNAL OF MEMBRANE SCIENCE, v.596 JOURNAL OF MEMBRANE SCIENCE 596 N scie scopus 000512677400052 2-s2.0-85076243368 Engineering, Chemical Polymer Science Engineering Polymer Science Article COMPOSITE MEMBRANES RELATIVE-HUMIDITY BIPOLAR MEMBRANE CATALYST WATER PERFORMANCE VISUALIZATION ELECTROLYSIS FABRICATION SIMULATION Anion exchange membrane Cation exchange membrane Dual exchange membrane fuel cell Polymer electrolyte fuel cells Self-humidifying fuel cell operation