Thieu, Cam-Anh Yang, Sungeun Ji, Ho-Il Kim, Hyoungchul Yoon, Kyung Joong Lee, Jong-Ho Son, Ji-Won 2024-01-19T13:00:57Z 2024-01-19T13:00:57Z 2022-01-10 2022-02 2050-7488 https://pubs.kist.re.kr/handle/201004/115805 The use of thin-film solid oxide fuel cells (TF-SOFCs) can effectively lower the operating temperature of a typical solid oxide fuel cell (SOFC) below 600 degrees C, while maintaining high efficiency and using low-cost catalysts. However, the fuel flexibility in SOFCs becomes a significant challenge at lower operating temperatures, resulting in the need for expensive noble-metal catalysts. The effective implementation of low-cost catalysts, Cu and CeO2, in a TF-SOFC presents a solution to this problem. Cu is inserted directly near the electrolyte-anode interface via a combination of pulsed laser deposition and sputtering to assist the electrochemical reactions, and the anode support, which constitutes the main volume of the cell, is infiltrated with CeO2 to effectively facilitate thermochemical reforming reactions. A comprehensive study of catalyst-modified cells (Cu-Ce-cell, Ce-cell, and Cu-cell) and a Ni/YSZ reference cell (ref-cell) is performed over n-butane fuel in an operating temperature range of 500 to 600 degrees C. The cell incorporating Cu and CeO2 (Cu-Ce-cell) shows a record high performance for a hydrocarbon-fueled SOFC, with a peak power density of 1120 mW cm(-2) at 600 degrees C. Cu and CeO2 improve the activity of the steam reforming reaction, and CeO2 expands the triple-phase boundary, increasing the electrochemical activity. Cu-Ce-cell also degrades at a much slower rate than ref-cell. Post-reaction analysis proves that the drastic improvement in longevity is achieved as a result of the enhanced carbon deposition resistance of Cu-Ce-cell. English Royal Society of Chemistry Achieving performance and longevity with butane-operated low-temperature solid oxide fuel cells using low-cost Cu and CeO2 catalysts Article 10.1039/d1ta06922e 1 Journal of Materials Chemistry A, v.10, no.5, pp.2460 - 2473 Journal of Materials Chemistry A 10 5 2460 2473 N scie scopus 000715918700001 2-s2.0-85124231349 Chemistry, Physical Energy & Fuels Materials Science, Multidisciplinary Chemistry Energy & Fuels Materials Science Article NI-YSZ COMPOSITE IN-SITU NANO-COMPOSITE SOFC ANODES DOPED CERIA METHANE SURFACE COPPER PULSED-LASER DEPOSITION THIN-FILM ELECTROLYTE