Oxygen reduction mechanism of NdBaCo2O5+δ cathode for intermediate-temperature solid oxide fuel cells under cathodic polarization

Haitao Gu; Han Chen; Ling Gao; Yifeng Zheng; Xiaofang Zhu; Lucun Guo

doi:10.1016/j.ijhydene.2009.01.003

Oxygen reduction mechanism of NdBaCo₂O_5+δ cathode for intermediate-temperature solid oxide fuel cells under cathodic polarization

Haitao Gu, Han Chen, Ling Gao, Yifeng Zheng, Xiaofang Zhu, Lucun Guo

College of Materials Science and Engineering

Nanjing Tech University

Research output: Contribution to journal › Article › peer-review

74 Scopus citations

Abstract

The oxygen reduction reaction mechanism of NdBaCo₂O_5+δ cathode for intermediate-temperature solid oxide fuel cells was investigated by the electrochemical impedance spectroscopy under cathodic polarization. The Nyquist diagrams showed the different changes with the applied cathodic voltage at three temperature ranges: at 500 and 550 °C, at 600 °C, at 650 and 700 °C, which might be related to the changes in the charge transfer and/or oxygen diffusion processes including O₂ adsorption/desorption. Besides, the diffusion process was more easily affected by the increase of applied cathodic voltages than the charge transfer process, which was ascribed to the low activation energy of the diffusion process.

Original language	English
Pages (from-to)	2416-2420
Number of pages	5
Journal	International Journal of Hydrogen Energy
Volume	34
Issue number	5
DOIs	https://doi.org/10.1016/j.ijhydene.2009.01.003
State	Published - Mar 2009

Keywords

Cathodic polarization
Electrochemical impedance spectroscopy
Oxygen reduction reaction
Solid oxide fuel cells

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.ijhydene.2009.01.003

Cite this

@article{027951b8e606420e966f913e09dbac34,

title = "Oxygen reduction mechanism of NdBaCo2O5+δ cathode for intermediate-temperature solid oxide fuel cells under cathodic polarization",

abstract = "The oxygen reduction reaction mechanism of NdBaCo2O5+δ cathode for intermediate-temperature solid oxide fuel cells was investigated by the electrochemical impedance spectroscopy under cathodic polarization. The Nyquist diagrams showed the different changes with the applied cathodic voltage at three temperature ranges: at 500 and 550 °C, at 600 °C, at 650 and 700 °C, which might be related to the changes in the charge transfer and/or oxygen diffusion processes including O2 adsorption/desorption. Besides, the diffusion process was more easily affected by the increase of applied cathodic voltages than the charge transfer process, which was ascribed to the low activation energy of the diffusion process.",

keywords = "Cathodic polarization, Electrochemical impedance spectroscopy, Oxygen reduction reaction, Solid oxide fuel cells",

author = "Haitao Gu and Han Chen and Ling Gao and Yifeng Zheng and Xiaofang Zhu and Lucun Guo",

year = "2009",

month = mar,

doi = "10.1016/j.ijhydene.2009.01.003",

language = "英语",

volume = "34",

pages = "2416--2420",

journal = "International Journal of Hydrogen Energy",

issn = "0360-3199",

publisher = "Elsevier Ltd",

number = "5",

}

TY - JOUR

T1 - Oxygen reduction mechanism of NdBaCo2O5+δ cathode for intermediate-temperature solid oxide fuel cells under cathodic polarization

AU - Gu, Haitao

AU - Chen, Han

AU - Gao, Ling

AU - Zheng, Yifeng

AU - Zhu, Xiaofang

AU - Guo, Lucun

PY - 2009/3

Y1 - 2009/3

N2 - The oxygen reduction reaction mechanism of NdBaCo2O5+δ cathode for intermediate-temperature solid oxide fuel cells was investigated by the electrochemical impedance spectroscopy under cathodic polarization. The Nyquist diagrams showed the different changes with the applied cathodic voltage at three temperature ranges: at 500 and 550 °C, at 600 °C, at 650 and 700 °C, which might be related to the changes in the charge transfer and/or oxygen diffusion processes including O2 adsorption/desorption. Besides, the diffusion process was more easily affected by the increase of applied cathodic voltages than the charge transfer process, which was ascribed to the low activation energy of the diffusion process.

AB - The oxygen reduction reaction mechanism of NdBaCo2O5+δ cathode for intermediate-temperature solid oxide fuel cells was investigated by the electrochemical impedance spectroscopy under cathodic polarization. The Nyquist diagrams showed the different changes with the applied cathodic voltage at three temperature ranges: at 500 and 550 °C, at 600 °C, at 650 and 700 °C, which might be related to the changes in the charge transfer and/or oxygen diffusion processes including O2 adsorption/desorption. Besides, the diffusion process was more easily affected by the increase of applied cathodic voltages than the charge transfer process, which was ascribed to the low activation energy of the diffusion process.

KW - Cathodic polarization

KW - Electrochemical impedance spectroscopy

KW - Oxygen reduction reaction

KW - Solid oxide fuel cells

UR - http://www.scopus.com/inward/record.url?scp=60649105195&partnerID=8YFLogxK

U2 - 10.1016/j.ijhydene.2009.01.003

DO - 10.1016/j.ijhydene.2009.01.003

M3 - 文章

AN - SCOPUS:60649105195

SN - 0360-3199

VL - 34

SP - 2416

EP - 2420

JO - International Journal of Hydrogen Energy

JF - International Journal of Hydrogen Energy

IS - 5

ER -