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Pr Doped Barium Cerate as the Cathode Material for Proton‐Conducting SOFCs
Author(s) -
Tao Z.,
Hou G.,
Xu N.,
Chen X.,
Zhang Q.
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.201300205
Subject(s) - cathode , materials science , electrolyte , anode , polarization (electrochemistry) , open circuit voltage , oxide , proton conductor , power density , solid oxide fuel cell , non blocking i/o , hydrogen , doping , inorganic chemistry , barium oxide , conductivity , chemical engineering , chemistry , catalysis , optoelectronics , electrode , electrical engineering , metallurgy , voltage , organic chemistry , power (physics) , physics , quantum mechanics , engineering
BaCe 0.8 Pr 0.2 O 3 (BCP20) and BaCe 0.6 Pr 0.4 O 3 (BCP40) powders are successfully synthesized through the Pechini method and used as the cathode materials for proton‐conducting solid state oxide fuel cells (SOFCs). The prepared cells consisting of the structure of a BaZr 0.1 Ce 0.7 Y 0.2 O 3–δ (BZCY7)‐NiO anode substrate, a BZCY7 anode functional layer, a BZCY7 electrolyte membrane, and a cathode layer, are measured from 600 to 700 °C with humidified hydrogen (∼3% H 2 O) as the fuel and static air as the oxidant. The electricity results show that the cell with BCP40 cathode has a higher power density, which could obtain an open‐circuit potential of 0.99 V and a maximum power density of 378 mW cm –2 at 700 °C. The polarization resistance measured at the open‐circuit condition of BCP40 is only 0.16 Ω cm 2 at 700 °C, which was less than BCP20.