High-performance and durable alcohol-fueled symmetrical solid oxide fuel cell based on ferrite perovskite electrode

Bangxin Li; John T.S. Irvine; Jiupai Ni; Chengsheng Ni

doi:10.1016/j.apenergy.2021.118117

High-performance and durable alcohol-fueled symmetrical solid oxide fuel cell based on ferrite perovskite electrode

Bangxin Li, John T.S. Irvine, Jiupai Ni, Chengsheng Ni^*

^*Corresponding author for this work

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

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Abstract

A solid oxide fuel cell utilizing bio-fuels such as methanol and ethanol could provide a carbon–neutral electricity generation and facilitate its applications in transport or stationary power unit. Herein, Ce⁴⁺ doping in SrFe_0.95Ni_0.05O₃ imparts FeNi₃ exsolution and CeO₂ precipitation in a reducing condition, contributing to the fuel reforming, C-C bond cleavage and coke consumption in the anode chamber. The ferrite perovskites are stable in ethanol/steam at 800 °C, whereas they are unstable in ethanol vapor with the high C fugacity inducing the formation of Fe⁰ and carbides. However, the Ce_0.2Sr_0.8Fe_0.95Ni_0.05O₃ anode maintains mostly the perovskite and is free from coke after the 300 h’ operation under C₂H₅OH fuel at 0.5 V or 0.7 V because of the dynamic balance between the carbon deposition and consumption since an operation for 10 h shows a clear carbon deposition. A maximum power density of 0.58 W cm⁻² and a polarization resistance of 0.21 Ω cm² at 800 °C can be obtained for the symmetrical solid oxide fuel cell with identical Ce_0.2Sr_0.8Fe_0.95Ni_0.05O₃ cathode and anode under an ethanol fuel. The results demonstrate that the reversible and stable SrFeO₃ with Ce/Ni co-doping has a bright prospect for alcohol fuel oxidation.

Original language	English
Article number	118117
Number of pages	11
Journal	Applied Energy
Volume	306
Issue number	Part B
Early online date	30 Oct 2021
DOIs	https://doi.org/10.1016/j.apenergy.2021.118117
Publication status	Published - 15 Jan 2022

Keywords

Ceria
Ethanol
Fe-Ni alloy
Exsolution
Coke deposition
Catalysis
Solid oxide fuel cell

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title = "High-performance and durable alcohol-fueled symmetrical solid oxide fuel cell based on ferrite perovskite electrode",

abstract = "A solid oxide fuel cell utilizing bio-fuels such as methanol and ethanol could provide a carbon–neutral electricity generation and facilitate its applications in transport or stationary power unit. Herein, Ce4+ doping in SrFe0.95Ni0.05O3 imparts FeNi3 exsolution and CeO2 precipitation in a reducing condition, contributing to the fuel reforming, C-C bond cleavage and coke consumption in the anode chamber. The ferrite perovskites are stable in ethanol/steam at 800 °C, whereas they are unstable in ethanol vapor with the high C fugacity inducing the formation of Fe0 and carbides. However, the Ce0.2Sr0.8Fe0.95Ni0.05O3 anode maintains mostly the perovskite and is free from coke after the 300 h{\textquoteright} operation under C2H5OH fuel at 0.5 V or 0.7 V because of the dynamic balance between the carbon deposition and consumption since an operation for 10 h shows a clear carbon deposition. A maximum power density of 0.58 W cm−2 and a polarization resistance of 0.21 Ω cm2 at 800 °C can be obtained for the symmetrical solid oxide fuel cell with identical Ce0.2Sr0.8Fe0.95Ni0.05O3 cathode and anode under an ethanol fuel. The results demonstrate that the reversible and stable SrFeO3 with Ce/Ni co-doping has a bright prospect for alcohol fuel oxidation.",

keywords = "Ceria, Ethanol, Fe-Ni alloy, Exsolution, Coke deposition, Catalysis, Solid oxide fuel cell",

author = "Bangxin Li and Irvine, {John T.S.} and Jiupai Ni and Chengsheng 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 (XDJK2020B066). C.N. also thanks to the award of Chongqing Bayu Young Scholar from Chongqing Teaching Committee and Funding for Oversea Returnees, while J.N. thanks to the support from Chongqing Yingcai Talent.",

year = "2022",

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day = "15",

doi = "10.1016/j.apenergy.2021.118117",

language = "English",

volume = "306",

journal = "Applied Energy",

issn = "0306-2619",

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T1 - High-performance and durable alcohol-fueled symmetrical solid oxide fuel cell based on ferrite perovskite electrode

AU - Li, Bangxin

AU - Irvine, John T.S.

AU - Ni, Jiupai

AU - Ni, Chengsheng

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 (XDJK2020B066). C.N. also thanks to the award of Chongqing Bayu Young Scholar from Chongqing Teaching Committee and Funding for Oversea Returnees, while J.N. thanks to the support from Chongqing Yingcai Talent.

PY - 2022/1/15

Y1 - 2022/1/15

N2 - A solid oxide fuel cell utilizing bio-fuels such as methanol and ethanol could provide a carbon–neutral electricity generation and facilitate its applications in transport or stationary power unit. Herein, Ce4+ doping in SrFe0.95Ni0.05O3 imparts FeNi3 exsolution and CeO2 precipitation in a reducing condition, contributing to the fuel reforming, C-C bond cleavage and coke consumption in the anode chamber. The ferrite perovskites are stable in ethanol/steam at 800 °C, whereas they are unstable in ethanol vapor with the high C fugacity inducing the formation of Fe0 and carbides. However, the Ce0.2Sr0.8Fe0.95Ni0.05O3 anode maintains mostly the perovskite and is free from coke after the 300 h’ operation under C2H5OH fuel at 0.5 V or 0.7 V because of the dynamic balance between the carbon deposition and consumption since an operation for 10 h shows a clear carbon deposition. A maximum power density of 0.58 W cm−2 and a polarization resistance of 0.21 Ω cm2 at 800 °C can be obtained for the symmetrical solid oxide fuel cell with identical Ce0.2Sr0.8Fe0.95Ni0.05O3 cathode and anode under an ethanol fuel. The results demonstrate that the reversible and stable SrFeO3 with Ce/Ni co-doping has a bright prospect for alcohol fuel oxidation.

AB - A solid oxide fuel cell utilizing bio-fuels such as methanol and ethanol could provide a carbon–neutral electricity generation and facilitate its applications in transport or stationary power unit. Herein, Ce4+ doping in SrFe0.95Ni0.05O3 imparts FeNi3 exsolution and CeO2 precipitation in a reducing condition, contributing to the fuel reforming, C-C bond cleavage and coke consumption in the anode chamber. The ferrite perovskites are stable in ethanol/steam at 800 °C, whereas they are unstable in ethanol vapor with the high C fugacity inducing the formation of Fe0 and carbides. However, the Ce0.2Sr0.8Fe0.95Ni0.05O3 anode maintains mostly the perovskite and is free from coke after the 300 h’ operation under C2H5OH fuel at 0.5 V or 0.7 V because of the dynamic balance between the carbon deposition and consumption since an operation for 10 h shows a clear carbon deposition. A maximum power density of 0.58 W cm−2 and a polarization resistance of 0.21 Ω cm2 at 800 °C can be obtained for the symmetrical solid oxide fuel cell with identical Ce0.2Sr0.8Fe0.95Ni0.05O3 cathode and anode under an ethanol fuel. The results demonstrate that the reversible and stable SrFeO3 with Ce/Ni co-doping has a bright prospect for alcohol fuel oxidation.

KW - Ceria

KW - Ethanol

KW - Fe-Ni alloy

KW - Exsolution

KW - Coke deposition

KW - Catalysis

KW - Solid oxide fuel cell

U2 - 10.1016/j.apenergy.2021.118117

DO - 10.1016/j.apenergy.2021.118117

M3 - Article

SN - 0306-2619

VL - 306

JO - Applied Energy

JF - Applied Energy

IS - Part B

M1 - 118117

ER -

High-performance and durable alcohol-fueled symmetrical solid oxide fuel cell based on ferrite perovskite electrode

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Keywords

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