Preparation and characterization of Pr0.6Sr0.4FeO3-δ-Ce0.9Pr0.1O2-δ nanofiber structured composite cathode for IT-SOFCs

Chao Jin; Yachun Mao; David W. Rooney; Naiqing Zhang; Kening Sun

doi:10.1016/j.ceramint.2016.02.121

Preparation and characterization of Pr_0.6Sr_0.4FeO_3-δ-Ce_0.9Pr_0.1O_2-δ nanofiber structured composite cathode for IT-SOFCs

Chao Jin, Yachun Mao, David W. Rooney, Naiqing Zhang^*, Kening Sun

^*Corresponding author for this work

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

8 Citations (Scopus)

Abstract

In this work, Pr_0.6Sr_0.4FeO_3-δ-Ce_0.9Pr_0.1O_2-δ (PSFO-CPO) nanofibers were synthesized by a one-step electrospin technique for use in intermediate-temperature solid oxide fuel cell (IT-SOFC) applications. PSFO-CPO nanofibers were produced with a diameter of about 100nm and lengths exceeding tens of microns. The thermal expansion coefficient (TEC) matches with standard GDC electrolytes and the resulting conductivity also satisfies the needs of IT-SOFCs cathodes. EIS analysis of the nanofiber structured electrode gives a polarization resistance of 0.072Ωcm² at 800°C, smaller than that from the powdered cathode with the same composition. The excellent electrochemical performance can be attributed to the well-constructed microstructure of the nanofiber structured cathode, which promotes surface oxygen diffusion and charge transfer processes. All the results imply that the one-step electrospin method is a facile and practical way of improving the cathode properties and that PSFO-CPO is a promising cathode material for IT-SOFCs.

Original language	English
Pages (from-to)	9311-9314
Number of pages	4
Journal	Ceramics international
Volume	42
Issue number	7
Early online date	23 Feb 2016
DOIs	https://doi.org/10.1016/j.ceramint.2016.02.121
Publication status	Published - 15 May 2016

Keywords

Nanofiber structured cathode
One-step electrospin technique
PrSrFeO-CePrO
Solid oxide fuel cells

ASJC Scopus subject areas

Ceramics and Composites
Process Chemistry and Technology
Electronic, Optical and Magnetic Materials
Surfaces, Coatings and Films
Materials Chemistry

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Cite this

@article{d301126d68bc46bb8348bf3ae55decef,

title = "Preparation and characterization of Pr0.6Sr0.4FeO3-δ-Ce0.9Pr0.1O2-δ nanofiber structured composite cathode for IT-SOFCs",

abstract = "In this work, Pr0.6Sr0.4FeO3-δ -Ce0.9Pr0.1O2-δ (PSFO-CPO) nanofibers were synthesized by a one-step electrospin technique for use in intermediate-temperature solid oxide fuel cell (IT-SOFC) applications. PSFO-CPO nanofibers were produced with a diameter of about 100nm and lengths exceeding tens of microns. The thermal expansion coefficient (TEC) matches with standard GDC electrolytes and the resulting conductivity also satisfies the needs of IT-SOFCs cathodes. EIS analysis of the nanofiber structured electrode gives a polarization resistance of 0.072Ωcm2 at 800°C, smaller than that from the powdered cathode with the same composition. The excellent electrochemical performance can be attributed to the well-constructed microstructure of the nanofiber structured cathode, which promotes surface oxygen diffusion and charge transfer processes. All the results imply that the one-step electrospin method is a facile and practical way of improving the cathode properties and that PSFO-CPO is a promising cathode material for IT-SOFCs.",

keywords = "Nanofiber structured cathode, One-step electrospin technique, PrSrFeO-CePrO, Solid oxide fuel cells",

author = "Chao Jin and Yachun Mao and Rooney, {David W.} and Naiqing Zhang and Kening Sun",

year = "2016",

month = may,

day = "15",

doi = "10.1016/j.ceramint.2016.02.121",

language = "English",

volume = "42",

pages = "9311--9314",

journal = "Ceramics international",

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T1 - Preparation and characterization of Pr0.6Sr0.4FeO3-δ-Ce0.9Pr0.1O2-δ nanofiber structured composite cathode for IT-SOFCs

AU - Jin, Chao

AU - Mao, Yachun

AU - Rooney, David W.

AU - Zhang, Naiqing

AU - Sun, Kening

PY - 2016/5/15

Y1 - 2016/5/15

N2 - In this work, Pr0.6Sr0.4FeO3-δ -Ce0.9Pr0.1O2-δ (PSFO-CPO) nanofibers were synthesized by a one-step electrospin technique for use in intermediate-temperature solid oxide fuel cell (IT-SOFC) applications. PSFO-CPO nanofibers were produced with a diameter of about 100nm and lengths exceeding tens of microns. The thermal expansion coefficient (TEC) matches with standard GDC electrolytes and the resulting conductivity also satisfies the needs of IT-SOFCs cathodes. EIS analysis of the nanofiber structured electrode gives a polarization resistance of 0.072Ωcm2 at 800°C, smaller than that from the powdered cathode with the same composition. The excellent electrochemical performance can be attributed to the well-constructed microstructure of the nanofiber structured cathode, which promotes surface oxygen diffusion and charge transfer processes. All the results imply that the one-step electrospin method is a facile and practical way of improving the cathode properties and that PSFO-CPO is a promising cathode material for IT-SOFCs.

AB - In this work, Pr0.6Sr0.4FeO3-δ -Ce0.9Pr0.1O2-δ (PSFO-CPO) nanofibers were synthesized by a one-step electrospin technique for use in intermediate-temperature solid oxide fuel cell (IT-SOFC) applications. PSFO-CPO nanofibers were produced with a diameter of about 100nm and lengths exceeding tens of microns. The thermal expansion coefficient (TEC) matches with standard GDC electrolytes and the resulting conductivity also satisfies the needs of IT-SOFCs cathodes. EIS analysis of the nanofiber structured electrode gives a polarization resistance of 0.072Ωcm2 at 800°C, smaller than that from the powdered cathode with the same composition. The excellent electrochemical performance can be attributed to the well-constructed microstructure of the nanofiber structured cathode, which promotes surface oxygen diffusion and charge transfer processes. All the results imply that the one-step electrospin method is a facile and practical way of improving the cathode properties and that PSFO-CPO is a promising cathode material for IT-SOFCs.

KW - Nanofiber structured cathode

KW - One-step electrospin technique

KW - PrSrFeO-CePrO

KW - Solid oxide fuel cells

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