논문 해외 국제전문학술지(SCI급) Microstructural and electrochemical properties of impregnated La0.4Sr0.6Ti0.8Mn0.2O3 +/- d into a partially removed Ni SOFC anode substrate
- 학술지 구분 국제전문학술지(SCI급)
- 게재년월 2021-02
- 저자명 김정현,Woo, SH (Woo, Sung Hun),Baek, SW (Baek, Seung-Wook),Park, DS (Park, Dae Soo),Song, KE (Song, Kyeong Eun),Schlegl, H (Schlegl, Harald),Park, JY (Park, Jun-Young)
- 학술지명 JOURNAL OF ALLOYS AND COMPOUNDS
- 발행처명 ELSEVIER SCIENCE SA
- 발행국가 해외
- 논문언어 외국어
- 전체저자수 7
홈페이지논문 초록 (Abstract)
The microstructural and electrochemical properties of anodes obtained by impregnation of the La0.4Sr0.6Ti0.8Mn0.2O3 +/- d (LSTM) oxide system into two types of anode substrates such as Ni/8YSZ substrate (Ni (E)/8YSZ) and partially Ni removed Ni/8YSZ substrate (Ni(R)/8YSZ) were investigated in order to apply them as anode material for solid oxide fuel cells.All of the samples with LSTM impregnated on Ni (R)/8YSZ show higher electrical conductivity values than those of unimpregnated Ni (E)/8YSZ under dry H-2 condition. The highest electrical conductivity values of 2041.2, 1877.4, and 1764.3 S/cm at 700, 800 and 900 degrees C can be achieved by samples with 3 wt% impregnated LSTM on Ni (R)/8YSZ. From the XPS analysis, the existence of a Ti metal peak on the surface of LSTM was only measured for the LSTM (3 wt%)-Ni (R)/8YSZ sample, metallic titanium on the surface can improve the electrical catalytic reaction.LSTM (3 wt%)-Ni (R)/8YSZ showed higher electrical conductivity values then those of LSTM (3 wt%)-Ni (E)/8YSZ in all the temperature ranges measured in the case of dry CH 4 supply. Finally, the electrical conductivity of LSTM (3 wt%)-Ni (R)/8YSZ was stably maintained even when exposed to dry CH4 condition at 900 degrees C for a long time (100 h). (C) 2020 Elsevier B.V. All rights reserved.