CO2-induced reconstruction for ORR-enhanced solid oxide fuel cell cathode

Yuan Zhang; Junbiao Li; Heping Xie; Zhipeng Liu; Suling Shen; Ying Teng; Daqin Guan; Shuo Zhai; Yufei Song; Wei Zhou; Bin Chen; Meng Ni; Zongping Shao

doi:10.1016/j.cej.2023.142216

CO₂-induced reconstruction for ORR-enhanced solid oxide fuel cell cathode

Yuan Zhang, Junbiao Li, Heping Xie, Zhipeng Liu, Suling Shen, Ying Teng, Daqin Guan, Shuo Zhai, Yufei Song, Wei Zhou, Bin Chen, Meng Ni, Zongping Shao

College of Chemical Engineering

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

31 Scopus citations

Abstract

Solid oxide fuel cell (SOFC) cathode must be highly active and durable for electrochemical oxygen reduction reaction (ORR). Here, we demonstrate a CO₂-induced reconstruction strategy to build an oxygen incorporative but robust BaCO₃ shell for a self-assembled composite cathode from simple BaFeO_3-δ perovskite (noted as re-BF), leading to the enhanced ORR activity, durability, and thermomechanical compatibility. The heterostructure beneath the BaCO₃ shell consists of a BaFeO₃ phase and a BaFe₂O₄ phase, of which BaFeO₃ sustains the re-BF with good bulk oxygen transportation. The BaFe₂O₄ phase is stable with low thermal expansion coefficient, serving as a reinforced phase to re-BF for better chemical/morphological integrity. This new re-BF cathode shows good durability and a low area-specific resistance (ASR) of 0.013 Ω cm², about only one-third of pristine BaFeO_3-δ (0.041 Ω cm²) at 650 °C. This method can also be extended to other perovskite materials to develop an active catalyst for SOFC cathode.

Original language	English
Article number	142216
Journal	Chemical Engineering Journal
Volume	462
DOIs	https://doi.org/10.1016/j.cej.2023.142216
State	Published - 15 Apr 2023

Keywords

Carbon dioxide
Cathode
Oxygen reduction reaction
Reconstruction
Solid oxide fuel cell

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10.1016/j.cej.2023.142216

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title = "CO2-induced reconstruction for ORR-enhanced solid oxide fuel cell cathode",

abstract = "Solid oxide fuel cell (SOFC) cathode must be highly active and durable for electrochemical oxygen reduction reaction (ORR). Here, we demonstrate a CO2-induced reconstruction strategy to build an oxygen incorporative but robust BaCO3 shell for a self-assembled composite cathode from simple BaFeO3-δ perovskite (noted as re-BF), leading to the enhanced ORR activity, durability, and thermomechanical compatibility. The heterostructure beneath the BaCO3 shell consists of a BaFeO3 phase and a BaFe2O4 phase, of which BaFeO3 sustains the re-BF with good bulk oxygen transportation. The BaFe2O4 phase is stable with low thermal expansion coefficient, serving as a reinforced phase to re-BF for better chemical/morphological integrity. This new re-BF cathode shows good durability and a low area-specific resistance (ASR) of 0.013 Ω cm2, about only one-third of pristine BaFeO3-δ (0.041 Ω cm2) at 650 °C. This method can also be extended to other perovskite materials to develop an active catalyst for SOFC cathode.",

keywords = "Carbon dioxide, Cathode, Oxygen reduction reaction, Reconstruction, Solid oxide fuel cell",

author = "Yuan Zhang and Junbiao Li and Heping Xie and Zhipeng Liu and Suling Shen and Ying Teng and Daqin Guan and Shuo Zhai and Yufei Song and Wei Zhou and Bin Chen and Meng Ni and Zongping Shao",

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year = "2023",

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day = "15",

doi = "10.1016/j.cej.2023.142216",

language = "英语",

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TY - JOUR

T1 - CO2-induced reconstruction for ORR-enhanced solid oxide fuel cell cathode

AU - Zhang, Yuan

AU - Li, Junbiao

AU - Xie, Heping

AU - Liu, Zhipeng

AU - Shen, Suling

AU - Teng, Ying

AU - Guan, Daqin

AU - Zhai, Shuo

AU - Song, Yufei

AU - Zhou, Wei

AU - Chen, Bin

AU - Ni, Meng

AU - Shao, Zongping

PY - 2023/4/15

Y1 - 2023/4/15

N2 - Solid oxide fuel cell (SOFC) cathode must be highly active and durable for electrochemical oxygen reduction reaction (ORR). Here, we demonstrate a CO2-induced reconstruction strategy to build an oxygen incorporative but robust BaCO3 shell for a self-assembled composite cathode from simple BaFeO3-δ perovskite (noted as re-BF), leading to the enhanced ORR activity, durability, and thermomechanical compatibility. The heterostructure beneath the BaCO3 shell consists of a BaFeO3 phase and a BaFe2O4 phase, of which BaFeO3 sustains the re-BF with good bulk oxygen transportation. The BaFe2O4 phase is stable with low thermal expansion coefficient, serving as a reinforced phase to re-BF for better chemical/morphological integrity. This new re-BF cathode shows good durability and a low area-specific resistance (ASR) of 0.013 Ω cm2, about only one-third of pristine BaFeO3-δ (0.041 Ω cm2) at 650 °C. This method can also be extended to other perovskite materials to develop an active catalyst for SOFC cathode.

AB - Solid oxide fuel cell (SOFC) cathode must be highly active and durable for electrochemical oxygen reduction reaction (ORR). Here, we demonstrate a CO2-induced reconstruction strategy to build an oxygen incorporative but robust BaCO3 shell for a self-assembled composite cathode from simple BaFeO3-δ perovskite (noted as re-BF), leading to the enhanced ORR activity, durability, and thermomechanical compatibility. The heterostructure beneath the BaCO3 shell consists of a BaFeO3 phase and a BaFe2O4 phase, of which BaFeO3 sustains the re-BF with good bulk oxygen transportation. The BaFe2O4 phase is stable with low thermal expansion coefficient, serving as a reinforced phase to re-BF for better chemical/morphological integrity. This new re-BF cathode shows good durability and a low area-specific resistance (ASR) of 0.013 Ω cm2, about only one-third of pristine BaFeO3-δ (0.041 Ω cm2) at 650 °C. This method can also be extended to other perovskite materials to develop an active catalyst for SOFC cathode.

KW - Carbon dioxide

KW - Cathode

KW - Oxygen reduction reaction

KW - Reconstruction

KW - Solid oxide fuel cell

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U2 - 10.1016/j.cej.2023.142216

DO - 10.1016/j.cej.2023.142216

M3 - 文章

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SN - 1385-8947

VL - 462

JO - Chemical Engineering Journal

JF - Chemical Engineering Journal

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ER -

CO₂-induced reconstruction for ORR-enhanced solid oxide fuel cell cathode

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Keywords

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