A B-site doped perovskite ferrate for efficient anode of a solid oxide fuel cell with in situ metal exsolution

Chengsheng Ni; Qimiao Zeng; Debo He; Luo Peng; Deti Xie; John T.S. Irvine; Shukai Duan; Jiupai Ni

doi:10.1039/C9TA09916F

A B-site doped perovskite ferrate for efficient anode of a solid oxide fuel cell with in situ metal exsolution

Chengsheng Ni^*, Qimiao Zeng, Debo He, Luo Peng, Deti Xie, John T.S. Irvine, Shukai Duan, Jiupai Ni

^*Corresponding author for this work

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

Abstract

Compared to Ni(O) cermet, an oxide anode is much better for a solid oxide fuel cell at suppresses coking and carbon deposition with carbonaceous fuels. Furthermore, a small amount of metal nanoparticles can enhance the electrochemical performance of the oxide anode while maintaining compatibility with the carbonaceous fuel when anchored on the oxide surface. In this study, ferrate-based perovskites (La_0.95Fe_0.80Ni_0.05Ti_0.15O₃, LFNT) with Ni⁰ particles exsolution are investigated via B-site doping to increase the stability at 800 ^oC in H₂ atmosphere and electrocatalytic capability for fuel oxidation. Surprisingly, the B-site doped LaFeO₃ (La_0.95Fe_0.8Mg_0.2O₃, LFM) showed a high oxide-ion conductivity of 10 mS cm^-1 with limited electronic conduction and further doping of Ti⁴⁺ or Ni²⁺ could increase the electronic conductivity to 30 Scm^-1 and 100 Scm^-1 at 800 ^oC for the reduced La_0.95Fe_0.8Mg_0.05TiO₃ (LFMT) and LFNT, respectively. The cell with LFNT anode on a La_0.9Sr_0.1Ga_0.8Mg_0.2O_2.85 electrolyte shows a polarisation resistance of 0.32 Ωcm² at 800 ^oC and a high power density of 600 mWcm^-2 can be obtained when ceria is added via infiltration as a co-catalyst.

Original language	English
Pages (from-to)	26944-26953
Number of pages	10
Journal	Journal of Materials Chemistry A
Volume	7
Issue number	47
Early online date	29 Oct 2019
DOIs	https://doi.org/10.1039/C9TA09916F
Publication status	Published - 21 Dec 2019

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Copyright © 2019 The Author(s). his work has been made available online in accordance with publisher policies or with permission. Permission for further reuse of this content should be sought from the publisher or the rights holder. This is the author created accepted 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/C9TA09916F
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@article{6d6292e391354fa39d46753d507564d0,

title = "A B-site doped perovskite ferrate for efficient anode of a solid oxide fuel cell with in situ metal exsolution",

abstract = "Compared to Ni(O) cermet, an oxide anode is much better for a solid oxide fuel cell at suppresses coking and carbon deposition with carbonaceous fuels. Furthermore, a small amount of metal nanoparticles can enhance the electrochemical performance of the oxide anode while maintaining compatibility with the carbonaceous fuel when anchored on the oxide surface. In this study, ferrate-based perovskites (La0.95Fe0.80Ni0.05Ti0.15O3, LFNT) with Ni0 particles exsolution are investigated via B-site doping to increase the stability at 800 oC in H2 atmosphere and electrocatalytic capability for fuel oxidation. Surprisingly, the B-site doped LaFeO3 (La0.95Fe0.8Mg0.2O3, LFM) showed a high oxide-ion conductivity of 10 mS cm-1 with limited electronic conduction and further doping of Ti4+ or Ni2+ could increase the electronic conductivity to 30 Scm-1 and 100 Scm-1 at 800 oC for the reduced La0.95Fe0.8Mg0.05TiO3 (LFMT) and LFNT, respectively. The cell with LFNT anode on a La0.9Sr0.1Ga0.8Mg0.2O2.85 electrolyte shows a polarisation resistance of 0.32 Ωcm2 at 800 oC and a high power density of 600 mWcm-2 can be obtained when ceria is added via infiltration as a co-catalyst.",

author = "Chengsheng Ni and Qimiao Zeng and Debo He and Luo Peng and Deti Xie and Irvine, {John T.S.} and Shukai Duan and Jiupai Ni",

note = "This work is supported by the NSFC (grant No. 51702264; 41371275) and National Key Research and Development Program of China (grant No. 2018FYD0200701) and research funding for central universities (XDJK2019D04).",

year = "2019",

month = dec,

day = "21",

doi = "10.1039/C9TA09916F",

language = "English",

volume = "7",

pages = "26944--26953",

journal = "Journal of Materials Chemistry A",

issn = "2050-7488",

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number = "47",

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TY - JOUR

T1 - A B-site doped perovskite ferrate for efficient anode of a solid oxide fuel cell with in situ metal exsolution

AU - Ni, Chengsheng

AU - Zeng, Qimiao

AU - He, Debo

AU - Peng, Luo

AU - Xie, Deti

AU - Irvine, John T.S.

AU - Duan, Shukai

AU - Ni, Jiupai

N1 - This work is supported by the NSFC (grant No. 51702264; 41371275) and National Key Research and Development Program of China (grant No. 2018FYD0200701) and research funding for central universities (XDJK2019D04).

PY - 2019/12/21

Y1 - 2019/12/21

N2 - Compared to Ni(O) cermet, an oxide anode is much better for a solid oxide fuel cell at suppresses coking and carbon deposition with carbonaceous fuels. Furthermore, a small amount of metal nanoparticles can enhance the electrochemical performance of the oxide anode while maintaining compatibility with the carbonaceous fuel when anchored on the oxide surface. In this study, ferrate-based perovskites (La0.95Fe0.80Ni0.05Ti0.15O3, LFNT) with Ni0 particles exsolution are investigated via B-site doping to increase the stability at 800 oC in H2 atmosphere and electrocatalytic capability for fuel oxidation. Surprisingly, the B-site doped LaFeO3 (La0.95Fe0.8Mg0.2O3, LFM) showed a high oxide-ion conductivity of 10 mS cm-1 with limited electronic conduction and further doping of Ti4+ or Ni2+ could increase the electronic conductivity to 30 Scm-1 and 100 Scm-1 at 800 oC for the reduced La0.95Fe0.8Mg0.05TiO3 (LFMT) and LFNT, respectively. The cell with LFNT anode on a La0.9Sr0.1Ga0.8Mg0.2O2.85 electrolyte shows a polarisation resistance of 0.32 Ωcm2 at 800 oC and a high power density of 600 mWcm-2 can be obtained when ceria is added via infiltration as a co-catalyst.

AB - Compared to Ni(O) cermet, an oxide anode is much better for a solid oxide fuel cell at suppresses coking and carbon deposition with carbonaceous fuels. Furthermore, a small amount of metal nanoparticles can enhance the electrochemical performance of the oxide anode while maintaining compatibility with the carbonaceous fuel when anchored on the oxide surface. In this study, ferrate-based perovskites (La0.95Fe0.80Ni0.05Ti0.15O3, LFNT) with Ni0 particles exsolution are investigated via B-site doping to increase the stability at 800 oC in H2 atmosphere and electrocatalytic capability for fuel oxidation. Surprisingly, the B-site doped LaFeO3 (La0.95Fe0.8Mg0.2O3, LFM) showed a high oxide-ion conductivity of 10 mS cm-1 with limited electronic conduction and further doping of Ti4+ or Ni2+ could increase the electronic conductivity to 30 Scm-1 and 100 Scm-1 at 800 oC for the reduced La0.95Fe0.8Mg0.05TiO3 (LFMT) and LFNT, respectively. The cell with LFNT anode on a La0.9Sr0.1Ga0.8Mg0.2O2.85 electrolyte shows a polarisation resistance of 0.32 Ωcm2 at 800 oC and a high power density of 600 mWcm-2 can be obtained when ceria is added via infiltration as a co-catalyst.

U2 - 10.1039/C9TA09916F

DO - 10.1039/C9TA09916F

M3 - Article

SN - 2050-7488

VL - 7

SP - 26944

EP - 26953

JO - Journal of Materials Chemistry A

JF - Journal of Materials Chemistry A

IS - 47

ER -

A B-site doped perovskite ferrate for efficient anode of a solid oxide fuel cell with in situ metal exsolution

Abstract

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