Lee, Kyung Ah Yi, Gyu Seong Park, Sungbin Choi, Hosung Kim, Junha Park, Ji Eun Sung, Yung-Eun 2025-03-23T11:00:12Z 2025-03-23T11:00:12Z 2025-03-19 2025-04 1226-086X https://pubs.kist.re.kr/handle/201004/152058 In this study, we investigate various membrane-electrode assembly (MEA) parameters in the oxygen and hydrogen electrodes for high-efficiency anion-exchange membrane-unitized regenerative fuel cell (AEM_URFC). The effects of catalyst loadings, types of porous transport layer (PTL), and oxygen and hydrogen catalysts were optimized to improve the efficiency of the AEM_URFC. The PTL results indicated that the PTL suitable for fuel cell (FC) exhibited high round-trip efficiency (RTE). Additionally, the types of hydrogen electrode (Pt/C and PtRu/C) were examined. Additionally, AEM_URFCs with different oxygen reduction reaction (ORR) catalyst types (Pt/C and Pt black), and ORR and oxygen evolution reaction catalyst loadings were evaluated. Through our investigations, we developed a high-efficiency AEM_URFC with an RTE of 65.9 % at 20 mA cm- 2 (0.871 and 1.572 V (FC and WE modes, respectively)). Moreover, the performance of this AEM_URFC is superior to that of other AEM_URFCs reported in the literature, which is attributed to the reduced ohmic resistance loss caused by the electrical conductivity and hydrophobicity of carbon PTL. Moreover, the AEM_URFC was durable for 5 cycles, indicating that it is cyclable under URFC operation. English 한국공업화학회 Investigation of membrane-electrode assembly parameters for double-layer anion-exchange membrane-unitized regenerative fuel cell Article 10.1016/j.jiec.2024.09.048 1 Journal of Industrial and Engineering Chemistry, v.144, pp.487 - 495 Journal of Industrial and Engineering Chemistry 144 487 495 N scie scopus kci 001425755500001 2-s2.0-85205768458 Chemistry, Multidisciplinary Engineering, Chemical Chemistry Engineering Article HYDROGEN OXIDATION REACTION PRECIOUS-METAL-FREE HIGH-PERFORMANCE ELECTROCHEMICAL CORROSION CATALYST LAYER WATER GDL HYDROPHOBICITY ELECTROCATALYSTS EFFICIENT Anion-exchange membrane Unitized regenerative fuel cell Fuel cell Water electrolysis Membrane-electrode assembly