Silver and Samaria-Doped Ceria (Ag-SDC) Cermet Cathode for Low-Temperature Solid Oxide Fuel Cells

被引:1
|
作者
Jeong, Davin [1 ]
Lim, Yonghyun [2 ]
Kim, Hyeontaek [1 ]
Park, Yongchan [1 ]
Hong, Soonwook [1 ]
机构
[1] Chonnam Natl Univ, Dept Mech Engn, 77 Yongbong Ro, Gwangju 61186, South Korea
[2] Stanford Univ, Dept Mech Engn, Stanford, CA 94305 USA
基金
新加坡国家研究基金会;
关键词
silver (Ag); samaria-doped ceria (SDC); co-sputtering; solid oxide fuel cell (SOFC); oxygen reduction reaction (ORR); PERFORMANCE;
D O I
10.3390/nano13050886
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
This study demonstrated a silver (Ag) and samarium-doped ceria (SDC) mixed ceramic and metal composite (i.e., cermet) as a cathode for low-temperature solid oxide fuel cells (LT-SOFCs). Introducing the Ag-SDC cermet cathode for LT-SOFCs revealed that the ratio between Ag and SDC, which is a crucial factor for catalytic reactions, can be tuned by the co-sputtering process, resulting in enhanced triple phase boundary (TPB) density in the nanostructure. Ag-SDC cermet not only successfully performed as a cathode to increase the performance of LT-SOFCs by decreasing polarization resistance but also exceeded the catalytic activity of platinum (Pt) due to the improved oxygen reduction reaction (ORR). It was also found that less than half of Ag content was effective to increase TPB density, preventing oxidation of the Ag surface as well.
引用
收藏
页数:10
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