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A Direct Ammonia Fuel Cell Using Barium Cerate Proton Conducting Electrolyte Doped With Gadolinium and Praseodymium
Author(s) -
Maffei N.,
Pelletier L.,
Charland J. P.,
McFarlan A.
Publication year - 2007
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.200600038
Subject(s) - praseodymium , electrolyte , hydrogen fuel , materials science , gadolinium , anode , ammonia , hydrogen , barium , inorganic chemistry , power density , fuel cells , proton conductor , analytical chemistry (journal) , chemical engineering , chemistry , metallurgy , power (physics) , thermodynamics , chromatography , electrode , physics , organic chemistry , engineering
Abstract The performance characteristics of fuel cells based on proton conducting BaCeO 3 solid electrolyte doubly doped with gadolinium and praseodymium are reported. The amount of praseodymium doping is systematically varied in order to optimize the fuel cell performance. Fuel cells incorporating the optimum amount of praseodymium exhibit power density levels enhanced by a factor of three, compared to those incorporating undoped BaCeO 3 . The performance of the fuel cell is essentially the same irrespective of the fuel used. However, the performance of the fuel cell is slightly better in hydrogen than in ammonia. Nevertheless, fuel cells operated in ammonia show a greater decrease in peak power density with decreasing temperature than those operated in hydrogen. This behaviour suggests that alternative anode materials need to be utilized at lower operating temperatures.