Semiconductor Fe-doped SrTiO3-δ perovskite electrolyte for low-temperature solid oxide fuel cell (LT-SOFC) operating below 520 °C

M. A.K.Yousaf Shah; Sajid Rauf; Naveed Mushtaq; Zuhra Tayyab; Nasir Ali; Muhammad Yousaf; Yueming Xing; Muhammad Akbar; Peter D. Lund; Chang Ping Yang; Bin Zhu; Muhammad Imran Asghar

doi:10.1016/j.ijhydene.2020.03.147

Semiconductor Fe-doped SrTiO_3-δ perovskite electrolyte for low-temperature solid oxide fuel cell (LT-SOFC) operating below 520 °C

M. A.K.Yousaf Shah
, Sajid Rauf
, Naveed Mushtaq
, Zuhra Tayyab
, Nasir Ali
, Muhammad Yousaf
, Yueming Xing
, Muhammad Akbar
, Peter D. Lund
, Chang Ping Yang
, Bin Zhu^*
, Muhammad Imran Asghar

^*Corresponding author for this work

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

80 Citations (Scopus)

Abstract

High-temperature operation of solid oxide fuel cells causes several degradation and material issues. Lowering the operating temperature results in reduced fuel cell performance primarily due to the limited ionic conductivity of the electrolyte. Here we introduce the Fe-doped SrTiO_3-δ (SFT) pure perovskite material as an electrolyte, which shows good ionic conduction even at lower temperatures, but has low electronic conduction avoiding short-circuiting. Fuel cell fabricated using this electrolyte exhibits a maximum power density of 540 mW/cm² at 520 °C with Ni-NCAL electrodes. It was found that the Fe-doping into the SrTiO_3-δ facilitates the creation of oxygen vacancies enhancing ionic conductivity and transport of oxygen ions. Such high performance can be attributed to band-bending at the interface of electrolyte/electrode, which suppresses electron flow, but enhances ionic flow.

Original language	English
Pages (from-to)	14470-14479
Number of pages	10
Journal	International Journal of Hydrogen Energy
Volume	45
Issue number	28
Early online date	1 Jan 2020
DOIs	https://doi.org/10.1016/j.ijhydene.2020.03.147
Publication status	Published - 21 May 2020
MoE publication type	A1 Journal article-refereed

Funding

This work was supported by the National Natural Science Foundation of China (NSFC, grant Nos. 11674086 , 51774259 , 51772080 and 51675496 ), Engineering Research Center of Nano-Geo Materials of Ministry of Education ( NGM2017KF004 , NGM2017KF012 , and NGM2018KF016 ). Dr. Asghar thanks the Hubei overseas Talent 100 programme (as distinguished professor at Hubei University) and Academy of Finland (Grant No. 13 329016 ) for their support.

Keywords

Band alignment
Impressive fuel cell performance & high ionic conduction
Low-temperature solid oxide fuel cell (LT-SOFC)
Semiconductor electrolyte SFT

UN SDGs

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

Access to Document

10.1016/j.ijhydene.2020.03.147

Cite this

Shah, M. A. K. Y., Rauf, S., Mushtaq, N., Tayyab, Z., Ali, N., Yousaf, M., Xing, Y., Akbar, M., Lund, P. D., Yang, C. P., Zhu, B., & Asghar, M. I. (2020). Semiconductor Fe-doped SrTiO_3-δ perovskite electrolyte for low-temperature solid oxide fuel cell (LT-SOFC) operating below 520 °C. International Journal of Hydrogen Energy, 45(28), 14470-14479. https://doi.org/10.1016/j.ijhydene.2020.03.147

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title = "Semiconductor Fe-doped SrTiO3-δ perovskite electrolyte for low-temperature solid oxide fuel cell (LT-SOFC) operating below 520 °C",

abstract = "High-temperature operation of solid oxide fuel cells causes several degradation and material issues. Lowering the operating temperature results in reduced fuel cell performance primarily due to the limited ionic conductivity of the electrolyte. Here we introduce the Fe-doped SrTiO3-δ (SFT) pure perovskite material as an electrolyte, which shows good ionic conduction even at lower temperatures, but has low electronic conduction avoiding short-circuiting. Fuel cell fabricated using this electrolyte exhibits a maximum power density of 540 mW/cm2 at 520 °C with Ni-NCAL electrodes. It was found that the Fe-doping into the SrTiO3-δ facilitates the creation of oxygen vacancies enhancing ionic conductivity and transport of oxygen ions. Such high performance can be attributed to band-bending at the interface of electrolyte/electrode, which suppresses electron flow, but enhances ionic flow.",

keywords = "Band alignment, Impressive fuel cell performance \& high ionic conduction, Low-temperature solid oxide fuel cell (LT-SOFC), Semiconductor electrolyte SFT",

author = "Shah, \{M. A.K.Yousaf\} and Sajid Rauf and Naveed Mushtaq and Zuhra Tayyab and Nasir Ali and Muhammad Yousaf and Yueming Xing and Muhammad Akbar and Lund, \{Peter D.\} and Yang, \{Chang Ping\} and Bin Zhu and Asghar, \{Muhammad Imran\}",

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doi = "10.1016/j.ijhydene.2020.03.147",

language = "English",

volume = "45",

pages = "14470--14479",

journal = "International Journal of Hydrogen Energy",

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Shah, MAKY, Rauf, S, Mushtaq, N, Tayyab, Z, Ali, N, Yousaf, M, Xing, Y, Akbar, M, Lund, PD, Yang, CP, Zhu, B & Asghar, MI 2020, 'Semiconductor Fe-doped SrTiO_3-δ perovskite electrolyte for low-temperature solid oxide fuel cell (LT-SOFC) operating below 520 °C', International Journal of Hydrogen Energy, vol. 45, no. 28, pp. 14470-14479. https://doi.org/10.1016/j.ijhydene.2020.03.147

TY - JOUR

T1 - Semiconductor Fe-doped SrTiO3-δ perovskite electrolyte for low-temperature solid oxide fuel cell (LT-SOFC) operating below 520 °C

AU - Shah, M. A.K.Yousaf

AU - Rauf, Sajid

AU - Mushtaq, Naveed

AU - Tayyab, Zuhra

AU - Ali, Nasir

AU - Yousaf, Muhammad

AU - Xing, Yueming

AU - Akbar, Muhammad

AU - Lund, Peter D.

AU - Yang, Chang Ping

AU - Zhu, Bin

AU - Asghar, Muhammad Imran

PY - 2020/5/21

Y1 - 2020/5/21

N2 - High-temperature operation of solid oxide fuel cells causes several degradation and material issues. Lowering the operating temperature results in reduced fuel cell performance primarily due to the limited ionic conductivity of the electrolyte. Here we introduce the Fe-doped SrTiO3-δ (SFT) pure perovskite material as an electrolyte, which shows good ionic conduction even at lower temperatures, but has low electronic conduction avoiding short-circuiting. Fuel cell fabricated using this electrolyte exhibits a maximum power density of 540 mW/cm2 at 520 °C with Ni-NCAL electrodes. It was found that the Fe-doping into the SrTiO3-δ facilitates the creation of oxygen vacancies enhancing ionic conductivity and transport of oxygen ions. Such high performance can be attributed to band-bending at the interface of electrolyte/electrode, which suppresses electron flow, but enhances ionic flow.

AB - High-temperature operation of solid oxide fuel cells causes several degradation and material issues. Lowering the operating temperature results in reduced fuel cell performance primarily due to the limited ionic conductivity of the electrolyte. Here we introduce the Fe-doped SrTiO3-δ (SFT) pure perovskite material as an electrolyte, which shows good ionic conduction even at lower temperatures, but has low electronic conduction avoiding short-circuiting. Fuel cell fabricated using this electrolyte exhibits a maximum power density of 540 mW/cm2 at 520 °C with Ni-NCAL electrodes. It was found that the Fe-doping into the SrTiO3-δ facilitates the creation of oxygen vacancies enhancing ionic conductivity and transport of oxygen ions. Such high performance can be attributed to band-bending at the interface of electrolyte/electrode, which suppresses electron flow, but enhances ionic flow.

KW - Band alignment

KW - Impressive fuel cell performance & high ionic conduction

KW - Low-temperature solid oxide fuel cell (LT-SOFC)

KW - Semiconductor electrolyte SFT

UR - https://www.scopus.com/pages/publications/85083326001

U2 - 10.1016/j.ijhydene.2020.03.147

DO - 10.1016/j.ijhydene.2020.03.147

M3 - Article

AN - SCOPUS:85083326001

SN - 0360-3199

VL - 45

SP - 14470

EP - 14479

JO - International Journal of Hydrogen Energy

JF - International Journal of Hydrogen Energy

IS - 28

ER -

Semiconductor Fe-doped SrTiO_3-δ perovskite electrolyte for low-temperature solid oxide fuel cell (LT-SOFC) operating below 520 °C

Abstract

Funding

Keywords

UN SDGs

Access to Document

Other files and links

Fingerprint

Leading-edge next generation fuel cell devices

Cite this

Semiconductor Fe-doped SrTiO3-δ perovskite electrolyte for low-temperature solid oxide fuel cell (LT-SOFC) operating below 520 °C

Abstract

Funding

Keywords

UN SDGs

Access to Document

Other files and links

Fingerprint

Projects

Leading-edge next generation fuel cell devices

Cite this

Semiconductor Fe-doped SrTiO_3-δ perovskite electrolyte for low-temperature solid oxide fuel cell (LT-SOFC) operating below 520 °C