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Effects of PH 3 and CH 3 Cl Contaminants on the Performance of Solid Oxide Fuel Cells
Author(s) -
Li T. S.,
Gao C.,
Xu M.,
Li B.,
Wu M.,
Wang W. G.
Publication year - 2014
Publication title -
fuel cells
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.485
H-Index - 69
eISSN - 1615-6854
pISSN - 1615-6846
DOI - 10.1002/fuce.201300248
Subject(s) - syngas , coal , oxide , hydrogen , catalysis , drop (telecommunication) , chemical engineering , hydrogen fuel , chemistry , solid oxide fuel cell , fuel cells , natural gas , materials science , organic chemistry , electrode , telecommunications , anode , computer science , engineering
Solid oxide fuel cells (SOFCs) have been considered as one of the most efficient power generators that can directly convert chemical energy in the natural gas, biomass, or coal‐derived gas to electrical energy. Various contaminants in syngas are capable to cause catalyst malfunction and cell performance drop, limiting fuel cell to a wide application. The effects of PH 3 and CH 3 Cl fuel impurities on the electrochemical performance of SOFCs are investigated at various testing conditions. Performance drop caused by the addition of 10 ppm PH 3 remains identical in pure hydrogen and simulated coal‐derived syngas at 750 °C, but a slight increase is observed when the cells are fueled syngas at 850 °C. The presence of CH 3 Cl in syngas causes cell degradation to a larger extent at 850 °C. Moreover, the cooperative influences of PH 3 and CH 3 Cl impurities in hydrogen are also studied at 750, 800, and 850 °C. The addition of CH 3 Cl can stop and remove PH 3 poisoning behavior, which is associated with each contaminant concentrations and operational temperatures. The related mechanism has been deeply analyzed and diagnosed.