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

15 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 100 nm 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 0.072 Ω cm² 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
DOIs	https://doi.org/10.1016/j.ceramint.2016.02.121
Publication status	Published - 15 May 2016
Externally published	Yes

Keywords

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

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10.1016/j.ceramint.2016.02.121

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@article{2812275a4d214c0fac0351679860b740,

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 100 nm 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 0.072 Ω cm2 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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TY - JOUR

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 100 nm 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 0.072 Ω cm2 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 100 nm 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 0.072 Ω cm2 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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DO - 10.1016/j.ceramint.2016.02.121

M3 - Article

AN - SCOPUS:84975736061

SN - 0272-8842

VL - 42

SP - 9311

EP - 9314

JO - Ceramics International

JF - Ceramics International

IS - 7

ER -

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

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