Thieu, Cam-Anh Hong, Jongsup Kim, Hyoungchul Yoon, Kyung Joong Lee, Jong-Ho Kim, Byung-Kook Son, Ji-Won 2024-01-20T01:33:52Z 2024-01-20T01:33:52Z 2021-09-01 2017-04-28 2050-7488 https://pubs.kist.re.kr/handle/201004/122832 To enhance the electrochemical performance and syngas production in low-temperature co-electrolysis (LT-Co-EC), incorporation of Pd into the nickel-yttria-stabilized zirconia (Ni-YSZ) fuel electrode functional layer (FEFL) of a thin film-based solid oxide cell (TF-SOC) by multi-layer thin film deposition was investigated. The optimal configuration to insert a Pd layer without disturbing the surface and cross-sectional microstructure of the FEFL was fabricated by alternating multi-layer deposition of Pd by sputtering and nickel oxide-yttria-stabilized zirconia (NiO-YSZ) by pulsed laser deposition (PLD). TF-SOCs with Pd (Pd-cell) and without Pd (Ref-cell) were fabricated and compared based on the electrochemical reaction and syngas production in LT-Co-EC. The results showed that the catalytic activity by forming the Pd-Ni alloy on the electrochemical performance and thermochemical reaction are improved by Pd incorporation at low temperatures (<= 600 degrees C). Detailed microstructural analyses showed that Pd distributes from the electrode/electrolyte interface to a depth of several tens of microns in the anode support and forms a nano-structured Ni-Pd alloy, which contributes to improving the electrochemical reaction and thermochemical reactions such as water-gas-shift (WGS). It was also found that the performance stability was superior in the Pd-cell because pore array generation at the electrolyte/electrode interface was significantly suppressed in comparison with that of the Ref-cell. English ROYAL SOC CHEMISTRY RENEWABLE ENERGY-SOURCES NI BIMETALLIC CATALYSTS SYNGAS PRODUCTION STEAM/CO2 MIXTURES CARBON-DIOXIDE YSZ COMPOSITE SOFC ANODES PERFORMANCE METHANE MICROSTRUCTURE Incorporation of a Pd catalyst at the fuel electrode of a thin-film-based solid oxide cell by multi-layer deposition and its impact on low-temperature co-electrolysis Article 10.1039/c7ta00499k 1 JOURNAL OF MATERIALS CHEMISTRY A, v.5, no.16, pp.7433 - 7444 JOURNAL OF MATERIALS CHEMISTRY A 5 16 7433 7444 scie scopus 000399390300023 2-s2.0-85018490873 Chemistry, Physical Energy & Fuels Materials Science, Multidisciplinary Chemistry Energy & Fuels Materials Science Article RENEWABLE ENERGY-SOURCES NI BIMETALLIC CATALYSTS SYNGAS PRODUCTION STEAM/CO2 MIXTURES CARBON-DIOXIDE YSZ COMPOSITE SOFC ANODES PERFORMANCE METHANE MICROSTRUCTURE LT-Co-EC Pd catalyst TF-SOFC fuel electrode