An, Hyegsoon Lee, Hae-Weon Kim, Byung-Kook Son, Ji-Won Yoon, Kyung Joong Kim, Hyoungchul Shin, Dongwook Ji, Ho-Il Lee, Jong-Ho 2024-01-19T21:33:58Z 2024-01-19T21:33:58Z 2021-09-05 2018-10 2058-7546 https://pubs.kist.re.kr/handle/201004/120848 In spite of various advantages of protonic ceramic fuel cells over conventional fuel cells, distinct scepticism currently remains about their applicability because of lower-than-predicted performance and difficulty with scale-up. These challenges mainly stem from the refractory nature of proton-conducting ceramic electrolytes and the low chemical stability of these materials during the sintering process. Here, we present the fabrication of a physically thin, structurally dense and chemically homogeneous electrolyte, BaCe0.55Zr0.3Y0.15O3-delta (BCZY3), through a facile anode-assisted densification of the electrolyte on a structurally and compositionally uniform anode support, which resulted in breakthroughs in performance and scalability. A BCZY3-based protonic ceramic fuel cell with a size of 5 x 5 cm(2) exhibits an area-specific ohmic resistance of 0.09 Omega cm(2) and delivers a power as high as 20.8W per single cell at 600 degrees C. English NATURE PUBLISHING GROUP HIGH-PERFORMANCE NEXT-GENERATION CONDUCTOR CATHODE BAZR0.1CE0.7Y0.1YB0.1O3-DELTA BA0.5SR0.5CO0.8FE0.2O3-DELTA ELECTROLYTE OXIDES SOFCS A 5 x 5 cm(2) protonic ceramic fuel cell with a power density of 1.3 W cm(-2) at 600 degrees C Article 10.1038/s41560-018-0230-0 1 NATURE ENERGY, v.3, no.10, pp.870 - 875 NATURE ENERGY 3 10 870 875 scie scopus 000446724600017 2-s2.0-85053061616 Energy & Fuels Materials Science, Multidisciplinary Energy & Fuels Materials Science Article HIGH-PERFORMANCE NEXT-GENERATION CONDUCTOR CATHODE BAZR0.1CE0.7Y0.1YB0.1O3-DELTA BA0.5SR0.5CO0.8FE0.2O3-DELTA ELECTROLYTE OXIDES SOFCS