A novel in situ diffusion strategy to fabricate high performance cathodes for low temperature proton-conducting solid oxide fuel cells

Jie Hou; Lina Miao; Jianing Hui; Lei Bi; Wei Liu; John T.S. Irvine

doi:10.1039/c8ta00859k

A novel in situ diffusion strategy to fabricate high performance cathodes for low temperature proton-conducting solid oxide fuel cells

Jie Hou, Lina Miao, Jianing Hui, Lei Bi, Wei Liu^*, John T.S. Irvine

^*Corresponding author for this work

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

Abstract

Developing new low-cost high-performance cobalt-free cathode materials for low temperature proton-conducting solid oxide fuel cells (H-SOFCs) has been an imperative topic. In response to this challenge, we herein develop a novel in situ Pr diffusion strategy based on a Sm_0.2Ce_0.8O_2-δ-Pr(Pr_0.5Ba_1.5)Cu₃O_7-δ (SDC-PBCu, 3:7 wt%) compound, to achieve a perovskite-related proton-blocking composite cathode (PBCC) Ce_1-xPr_xO_2-δ-Ba₂CeCu₃O_7.4-Sm₂Ba_1.33Ce_0.67Cu₃O₉-CuO (PDC-BCC-SBCC-CuO) for BaZr_0.1Ce_0.7Y_0.2O_3-δ-based H-SOFCs. The single cell achieves a remarkable performance with a maximum power density (MPD) of 1000 and 566 mW cm^-2, corresponding to the interfacial polarization resistance (R_P) of 0.037 and 0.188 Ω cm² at 700 and 600 °C, respectively. The XRD results demonstrate that the PBCu phase disappears after the calcination of the mixed SDC-PBCu composite powder at 900 °C, with the formation of four new phases including fluorite structured PDC, orthorhombic layered material BCC, tetragonal perovskite-related SBCC and a small quantity of metallic oxide CuO, being favorable for a superior cathode performance. The ascendant electrochemical performance including the very high MPD and the lower R_P obtained here indicate that the quaternary cobalt-free PBCC PDC-BCC-SBCC-CuO is a preferable alternative for high-performance low-temperature H-SOFCs.

Original language	English
Pages (from-to)	10411-10420
Number of pages	10
Journal	Journal of Materials Chemistry A
Volume	6
Issue number	22
Early online date	24 Apr 2018
DOIs	https://doi.org/10.1039/c8ta00859k
Publication status	Published - 14 Jun 2018

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Hou_2018_JMCA_Diffusionstrategy_AAM
© 2018 The Author(s). This work has been made available online in accordance with the publisher’s policies. This is the author created, accepted version manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at: https://doi.org/10.1039/C8TA00859K
Accepted author manuscript, 1.93 MB
SupplInfo_JMCAAccepted author manuscript, 506 KB

Energy Materials Discovery: Energy Materials Discovery Characterisation and Application
Irvine, J. T. S. (PI), Cassidy, M. (CoI), Connor, P. A. (CoI), Savaniu, C. D. (CoI) & Zhou, W. (CoI)
EPSRC
7/01/13 → 6/01/18
Project: Standard

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@article{887d43ce5e7748cab7f5e8c13be6b455,

title = "A novel in situ diffusion strategy to fabricate high performance cathodes for low temperature proton-conducting solid oxide fuel cells",

abstract = "Developing new low-cost high-performance cobalt-free cathode materials for low temperature proton-conducting solid oxide fuel cells (H-SOFCs) has been an imperative topic. In response to this challenge, we herein develop a novel in situ Pr diffusion strategy based on a Sm0.2Ce0.8O2-δ-Pr(Pr0.5Ba1.5)Cu3O7-δ (SDC-PBCu, 3:7 wt%) compound, to achieve a perovskite-related proton-blocking composite cathode (PBCC) Ce1-xPrxO2-δ-Ba2CeCu3O7.4-Sm2Ba1.33Ce0.67Cu3O9-CuO (PDC-BCC-SBCC-CuO) for BaZr0.1Ce0.7Y0.2O3-δ-based H-SOFCs. The single cell achieves a remarkable performance with a maximum power density (MPD) of 1000 and 566 mW cm-2, corresponding to the interfacial polarization resistance (RP) of 0.037 and 0.188 Ω cm2 at 700 and 600 °C, respectively. The XRD results demonstrate that the PBCu phase disappears after the calcination of the mixed SDC-PBCu composite powder at 900 °C, with the formation of four new phases including fluorite structured PDC, orthorhombic layered material BCC, tetragonal perovskite-related SBCC and a small quantity of metallic oxide CuO, being favorable for a superior cathode performance. The ascendant electrochemical performance including the very high MPD and the lower RP obtained here indicate that the quaternary cobalt-free PBCC PDC-BCC-SBCC-CuO is a preferable alternative for high-performance low-temperature H-SOFCs.",

author = "Jie Hou and Lina Miao and Jianing Hui and Lei Bi and Wei Liu and Irvine, {John T.S.}",

note = "This work was supported by the National Natural Science Foundation of China (Grant No.: 21676261, U1632131 and 51602238). The authors acknowledge the financial support of the Royal Society of Edinburgh for a RSE BP Hutton Prize in Energy Innovation and EPSRC Platform grant, EP/K015540/1. We also would like to thank the support from the China Scholarship Council (No. 201606340101).",

year = "2018",

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doi = "10.1039/c8ta00859k",

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pages = "10411--10420",

journal = "Journal of Materials Chemistry A",

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T1 - A novel in situ diffusion strategy to fabricate high performance cathodes for low temperature proton-conducting solid oxide fuel cells

AU - Hou, Jie

AU - Miao, Lina

AU - Hui, Jianing

AU - Bi, Lei

AU - Liu, Wei

AU - Irvine, John T.S.

N1 - This work was supported by the National Natural Science Foundation of China (Grant No.: 21676261, U1632131 and 51602238). The authors acknowledge the financial support of the Royal Society of Edinburgh for a RSE BP Hutton Prize in Energy Innovation and EPSRC Platform grant, EP/K015540/1. We also would like to thank the support from the China Scholarship Council (No. 201606340101).

PY - 2018/6/14

Y1 - 2018/6/14

N2 - Developing new low-cost high-performance cobalt-free cathode materials for low temperature proton-conducting solid oxide fuel cells (H-SOFCs) has been an imperative topic. In response to this challenge, we herein develop a novel in situ Pr diffusion strategy based on a Sm0.2Ce0.8O2-δ-Pr(Pr0.5Ba1.5)Cu3O7-δ (SDC-PBCu, 3:7 wt%) compound, to achieve a perovskite-related proton-blocking composite cathode (PBCC) Ce1-xPrxO2-δ-Ba2CeCu3O7.4-Sm2Ba1.33Ce0.67Cu3O9-CuO (PDC-BCC-SBCC-CuO) for BaZr0.1Ce0.7Y0.2O3-δ-based H-SOFCs. The single cell achieves a remarkable performance with a maximum power density (MPD) of 1000 and 566 mW cm-2, corresponding to the interfacial polarization resistance (RP) of 0.037 and 0.188 Ω cm2 at 700 and 600 °C, respectively. The XRD results demonstrate that the PBCu phase disappears after the calcination of the mixed SDC-PBCu composite powder at 900 °C, with the formation of four new phases including fluorite structured PDC, orthorhombic layered material BCC, tetragonal perovskite-related SBCC and a small quantity of metallic oxide CuO, being favorable for a superior cathode performance. The ascendant electrochemical performance including the very high MPD and the lower RP obtained here indicate that the quaternary cobalt-free PBCC PDC-BCC-SBCC-CuO is a preferable alternative for high-performance low-temperature H-SOFCs.

AB - Developing new low-cost high-performance cobalt-free cathode materials for low temperature proton-conducting solid oxide fuel cells (H-SOFCs) has been an imperative topic. In response to this challenge, we herein develop a novel in situ Pr diffusion strategy based on a Sm0.2Ce0.8O2-δ-Pr(Pr0.5Ba1.5)Cu3O7-δ (SDC-PBCu, 3:7 wt%) compound, to achieve a perovskite-related proton-blocking composite cathode (PBCC) Ce1-xPrxO2-δ-Ba2CeCu3O7.4-Sm2Ba1.33Ce0.67Cu3O9-CuO (PDC-BCC-SBCC-CuO) for BaZr0.1Ce0.7Y0.2O3-δ-based H-SOFCs. The single cell achieves a remarkable performance with a maximum power density (MPD) of 1000 and 566 mW cm-2, corresponding to the interfacial polarization resistance (RP) of 0.037 and 0.188 Ω cm2 at 700 and 600 °C, respectively. The XRD results demonstrate that the PBCu phase disappears after the calcination of the mixed SDC-PBCu composite powder at 900 °C, with the formation of four new phases including fluorite structured PDC, orthorhombic layered material BCC, tetragonal perovskite-related SBCC and a small quantity of metallic oxide CuO, being favorable for a superior cathode performance. The ascendant electrochemical performance including the very high MPD and the lower RP obtained here indicate that the quaternary cobalt-free PBCC PDC-BCC-SBCC-CuO is a preferable alternative for high-performance low-temperature H-SOFCs.

U2 - 10.1039/c8ta00859k

DO - 10.1039/c8ta00859k

M3 - Article

AN - SCOPUS:85048249060

SN - 2050-7488

VL - 6

SP - 10411

EP - 10420

JO - Journal of Materials Chemistry A

JF - Journal of Materials Chemistry A

IS - 22

ER -

A novel in situ diffusion strategy to fabricate high performance cathodes for low temperature proton-conducting solid oxide fuel cells

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Energy Materials Discovery: Energy Materials Discovery Characterisation and Application

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