Premium
A strategy to reduce the impact of tar on a Ni ‐ YSZ anode of solid oxide fuel cells
Author(s) -
Chen Huili,
Guo Wenhua,
Wu Yufang,
Yang Guangming,
Shi Jing,
Zhou Wei,
Bai Jianping,
Li SiDian,
Shao Zongping
Publication year - 2019
Publication title -
international journal of energy research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.808
H-Index - 95
eISSN - 1099-114X
pISSN - 0363-907X
DOI - 10.1002/er.4484
Subject(s) - tar (computing) , chemical engineering , materials science , catalysis , anode , hydrogen , coke , toluene , methane , solid oxide fuel cell , oxide , chemistry , waste management , metallurgy , electrode , organic chemistry , engineering , computer science , programming language
Summary High‐temperature raw coke oven gas (COG) is a promising fuel for use in solid oxide fuel cells (SOFCs) because it is rich in both hydrogen (55%‐60%) and methane (23%‐27%). However, the tar present in COG limits its ability to directly generate power using state‐of‐art SOFCs because the presence of tar limits the cell's performance and stability. In this work, a strategy is presented in the attempt to reduce the influence of tar on SOFCs by applying a La 0.7 Sr 0.3 MnO 3 catalyst as a protective layer for the cell. The results showed that 44‐g Nm −3 toluene had a profoundly negative effect on the performance of a conventional cell, which showed severely reduced performance after only 1.4 hours of exposure to toluene‐contaminated hydrogen. In contrast, the catalyst‐modified cell showed good stability for at least 110 hours under the same conditions. This work provides a promising route to directly utilize raw COG as an SOFC fuel that is also suitable for biosyngas.