Cobalt oxides coated commercial Ba0.5Sr0.5Co0.8Fe0.2O3-δ as high performance cathode for low-temperature SOFCs

Yunjuan He; Liangdong Fan; Muhammad Afzal; Manish Singh; Wei Zhang; Yufeng Zhao; Junjiao Li; Bin Zhu

doi:10.1016/j.electacta.2016.01.090

Cobalt oxides coated commercial Ba_0.5Sr_0.5Co_0.8Fe_0.2O_3-δ as high performance cathode for low-temperature SOFCs

Yunjuan He
, Liangdong Fan
, Muhammad Afzal
, Manish Singh
, Wei Zhang
, Yufeng Zhao
, Junjiao Li
, Bin Zhu

KTH Royal Institute of Technology
Hubei University
Yanshan University
Nanjing Yunna Nanotech Lth.

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

35 Scopus citations

Abstract

In order to improve the catalytic activity of commercial Ba_0.5S_r0.5Co_0.8Fe_0.2O_3-δ (BSCF) for low-temperature solid oxide fuel cells (LTSOFC) (300-600°C), CoO_x has been used to modify the commercial BSCF through a solution coating approach. Phase and morphology of samples were characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM) and energy-dispersive spectrometry (EDS), respectively. BSCF with 10 wt% CoO_x exhibited an improved conductivity of 44 S/cm, and achieved a peak power density of 463 mW/cm² at 550°C for LTSOFC, which is a 100% enhancement than that with the BSCF cathode. The cathode oxygen reduction reaction (ORR) promoted by CoO_x and enhanced device performance mechanism have been proposed. This work provides a new way for the exploitation of high effective cathode materials for LTSOFCs.

Original language	English
Pages (from-to)	223-229
Number of pages	7
Journal	Electrochimica Acta
Volume	191
DOIs	https://doi.org/10.1016/j.electacta.2016.01.090
State	Published - 10 Feb 2016
Externally published	Yes

Keywords

Electrical conductivity
High electrical performance
Low-temperature solid oxide fuel cells
Oxygen reduction kinetics
Perovskite cathode material

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10.1016/j.electacta.2016.01.090

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@article{e13eda8fbdba48b792d87303d328fef2,

title = "Cobalt oxides coated commercial Ba0.5Sr0.5Co0.8Fe0.2O3-δ as high performance cathode for low-temperature SOFCs",

abstract = "In order to improve the catalytic activity of commercial Ba0.5Sr0.5Co0.8Fe0.2O3-δ (BSCF) for low-temperature solid oxide fuel cells (LTSOFC) (300-600°C), CoOx has been used to modify the commercial BSCF through a solution coating approach. Phase and morphology of samples were characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM) and energy-dispersive spectrometry (EDS), respectively. BSCF with 10 wt\% CoOx exhibited an improved conductivity of 44 S/cm, and achieved a peak power density of 463 mW/cm2 at 550°C for LTSOFC, which is a 100\% enhancement than that with the BSCF cathode. The cathode oxygen reduction reaction (ORR) promoted by CoOx and enhanced device performance mechanism have been proposed. This work provides a new way for the exploitation of high effective cathode materials for LTSOFCs.",

keywords = "Electrical conductivity, High electrical performance, Low-temperature solid oxide fuel cells, Oxygen reduction kinetics, Perovskite cathode material",

author = "Yunjuan He and Liangdong Fan and Muhammad Afzal and Manish Singh and Wei Zhang and Yufeng Zhao and Junjiao Li and Bin Zhu",

year = "2016",

month = feb,

day = "10",

doi = "10.1016/j.electacta.2016.01.090",

language = "英语",

volume = "191",

pages = "223--229",

journal = "Electrochimica Acta",

issn = "0013-4686",

publisher = "Elsevier Ltd",

}

TY - JOUR

T1 - Cobalt oxides coated commercial Ba0.5Sr0.5Co0.8Fe0.2O3-δ as high performance cathode for low-temperature SOFCs

AU - He, Yunjuan

AU - Fan, Liangdong

AU - Afzal, Muhammad

AU - Singh, Manish

AU - Zhang, Wei

AU - Zhao, Yufeng

AU - Li, Junjiao

AU - Zhu, Bin

PY - 2016/2/10

Y1 - 2016/2/10

N2 - In order to improve the catalytic activity of commercial Ba0.5Sr0.5Co0.8Fe0.2O3-δ (BSCF) for low-temperature solid oxide fuel cells (LTSOFC) (300-600°C), CoOx has been used to modify the commercial BSCF through a solution coating approach. Phase and morphology of samples were characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM) and energy-dispersive spectrometry (EDS), respectively. BSCF with 10 wt% CoOx exhibited an improved conductivity of 44 S/cm, and achieved a peak power density of 463 mW/cm2 at 550°C for LTSOFC, which is a 100% enhancement than that with the BSCF cathode. The cathode oxygen reduction reaction (ORR) promoted by CoOx and enhanced device performance mechanism have been proposed. This work provides a new way for the exploitation of high effective cathode materials for LTSOFCs.

AB - In order to improve the catalytic activity of commercial Ba0.5Sr0.5Co0.8Fe0.2O3-δ (BSCF) for low-temperature solid oxide fuel cells (LTSOFC) (300-600°C), CoOx has been used to modify the commercial BSCF through a solution coating approach. Phase and morphology of samples were characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM) and energy-dispersive spectrometry (EDS), respectively. BSCF with 10 wt% CoOx exhibited an improved conductivity of 44 S/cm, and achieved a peak power density of 463 mW/cm2 at 550°C for LTSOFC, which is a 100% enhancement than that with the BSCF cathode. The cathode oxygen reduction reaction (ORR) promoted by CoOx and enhanced device performance mechanism have been proposed. This work provides a new way for the exploitation of high effective cathode materials for LTSOFCs.

KW - Electrical conductivity

KW - High electrical performance

KW - Low-temperature solid oxide fuel cells

KW - Oxygen reduction kinetics

KW - Perovskite cathode material

UR - https://www.scopus.com/pages/publications/84955451175

U2 - 10.1016/j.electacta.2016.01.090

DO - 10.1016/j.electacta.2016.01.090

M3 - 文章

AN - SCOPUS:84955451175

SN - 0013-4686

VL - 191

SP - 223

EP - 229

JO - Electrochimica Acta

JF - Electrochimica Acta

ER -

Cobalt oxides coated commercial Ba_0.5Sr_0.5Co_0.8Fe_0.2O_3-δ as high performance cathode for low-temperature SOFCs

Abstract

Keywords

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