Park, Mi Young 박선영 Seo, Haewon Jung, Jin-Mook Hwang, Hyo Ki Hong, Jongsup Park, Jun-Young Lee, Insung Yoon, Kyung Joong 2024-01-19T12:01:24Z 2024-01-19T12:01:24Z 2022-05-27 2022-06 2050-7488 https://pubs.kist.re.kr/handle/201004/115154 Solid oxide fuel cells (SOFCs) currently face great opportunities in various applications. One of the critical issues for their commercialization involves cathode current collection in full-scale stacks because forming a reliable electronic conduction path in high-temperature oxidizing environments is extremely difficult. Herein, we present a Cu-Mn foam as a highly efficient, reliable, and cost-competitive cathode current collector. The Cu-Mn foam exists as a metallic alloy in the as-fabricated state, which offers adequate mechanical properties for stack assembly. Subsequently, it transforms into a conductive spinel oxide during high-temperature operation, providing the desired electrical and structural characteristics. Resistance measurements at 700 degrees C verify that the Cu-Mn foam was stable for 27 000 h. In unit cell testing, the foam performs comparably to a noble metal (Pt) mesh, and when the cell is enlarged from 4 to 100 cm(2), no performance loss occurs. Furthermore, it is successfully incorporated into a 1 kW-class full-size stack, where it demonstrates excellent durability in accelerated tests involving thermal and current cycling for 3684 h. This developed Cu-Mn foam can overcome a crucial limitation in the scale-up of SOFC technology and can also be utilized to construct high-temperature electronic conduction paths in various applications. English Royal Society of Chemistry Construction of high-temperature electronic conduction paths for the scale-up of solid oxide fuel cell technology Article 10.1039/d2ta02468c 1 Journal of Materials Chemistry A, v.10, no.22, pp.11917 - 11925 Journal of Materials Chemistry A 10 22 11917 11925 N scie scopus 000793979300001 Chemistry, Physical Energy & Fuels Materials Science, Multidisciplinary Chemistry Energy & Fuels Materials Science Article; Early Access CATHODE CONTACT MATERIALS COPPER MANGANESE ALLOYS INTERMEDIATE-TEMPERATURE COMPOSITE CATHODE PERFORMANCE EVALUATION FE-22CR MESH METAL FOAM INTERCONNECT OXIDATION SPINELS