TY - JOUR
T1 - PrBaMn2O5+Δ with praseodymium oxide nano-catalyst as electrode for symmetrical solid oxide fuel cells
AU - Gu, Yiheng
AU - Zhang, Yanli
AU - Zheng, Yifeng
AU - Chen, Han
AU - Ge, Lin
AU - Guo, Lucun
N1 - Publisher Copyright:
© 2019 Elsevier B.V.
PY - 2019/11/15
Y1 - 2019/11/15
N2 - PrBaMn2O5+δ (PBMO) is one of the promising electrode materials for symmetrical solid oxide fuel cells, but suffers from limited electrocatalytic activity. In this work, nanosized Pr6O11 particles were introduced into PBMO backbone on both anode and cathode as synergic catalysts and to optimize the electrode reactions. The as-prepared electrode was investigated by X-ray diffraction, H2-temperature programmed reduction (H2-TPR), O2-temperature programmed desorption (O2-TPD), X-ray photoelectron spectroscopy (XPS), field emission scanning electron microscope (FESEM) and the electrochemical measurements. After coated with Pr6O11, the cathode polarization resistance (Rp) of PBMO decreased from 0.25 to 0.016 Ω cm2, the anode Rp reduced from 0.46 to 0.20 Ω cm2 and the power outputs of symmetrical cells improved by ∼75% at 800 °C. The TPR and TPD results indicate that the electrode catalytic activity was significantly promoted by Pr6O11. Furthermore, the stability tests show that PBMO with Pr6O11 is highly stable in redox conditions.
AB - PrBaMn2O5+δ (PBMO) is one of the promising electrode materials for symmetrical solid oxide fuel cells, but suffers from limited electrocatalytic activity. In this work, nanosized Pr6O11 particles were introduced into PBMO backbone on both anode and cathode as synergic catalysts and to optimize the electrode reactions. The as-prepared electrode was investigated by X-ray diffraction, H2-temperature programmed reduction (H2-TPR), O2-temperature programmed desorption (O2-TPD), X-ray photoelectron spectroscopy (XPS), field emission scanning electron microscope (FESEM) and the electrochemical measurements. After coated with Pr6O11, the cathode polarization resistance (Rp) of PBMO decreased from 0.25 to 0.016 Ω cm2, the anode Rp reduced from 0.46 to 0.20 Ω cm2 and the power outputs of symmetrical cells improved by ∼75% at 800 °C. The TPR and TPD results indicate that the electrode catalytic activity was significantly promoted by Pr6O11. Furthermore, the stability tests show that PBMO with Pr6O11 is highly stable in redox conditions.
KW - Catalysis
KW - Perovskite electrodes
KW - Praseodymium oxide
KW - Symmetrical solid oxide fuel cells
UR - http://www.scopus.com/inward/record.url?scp=85067894737&partnerID=8YFLogxK
U2 - 10.1016/j.apcatb.2019.117868
DO - 10.1016/j.apcatb.2019.117868
M3 - 文章
AN - SCOPUS:85067894737
SN - 0926-3373
VL - 257
JO - Applied Catalysis B: Environmental
JF - Applied Catalysis B: Environmental
M1 - 117868
ER -