A Highly Active Perovskite Cathode for Low-Temperature Solid Oxide Fuel Cells: BaCo0.7Fe0.22Sc0.08O3-δ

Wei He; Fei-Fei Dong; Xue-Lian Wu; Meng Ni

doi:10.1002/adsu.201700005

A Highly Active Perovskite Cathode for Low-Temperature Solid Oxide Fuel Cells: BaCo_0.7Fe_0.22Sc_0.08O_3-δ

Wei He^*, Fei-Fei Dong, Xue-Lian Wu, Meng Ni^*

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

8 Citations (Scopus)

Abstract

Low-temperature solid oxide fuel cells (LT-SOFCs) have attracted much attention for their long-term stability, short start-up time, and economic competitiveness. Development of a high electrochemical active cathode for the oxygen reduction reaction (ORR) is the key to LT-SOFCs. In this study, a cubic perovskite BaCo_0.7Fe_0.22Sc_0.08O_3-δ (BCFSc) is synthesized and investigated. It exhibits extremely low polarization resistances (e.g., 0.03 Omega cm² at 600 °C) in symmetric cell using Ce_0.8Sm_0.2O_1.9 (SDC) as the electrolyte, indicating an excellent ORR catalytic activity. A maximum output power density of 1446 mW cm^-2is achieved at 600 °C for a single cell with an anode functional layer, which is much larger than the one without it (1045 mW cm^-2). The favorable performance enables BCFSc to be a candidate cathode for LT-SOFCs.

Original language	English
Article number	1700005
Journal	Advanced Sustainable Systems
Volume	1
Issue number	5
Online published	18 Apr 2017
DOIs	https://doi.org/10.1002/adsu.201700005
Publication status	Published - May 2017

Research Keywords

catalytic activity
cathodes
cubic perovskites
solid state fuel cells
OXYGEN REDUCTION
MEMBRANES
PERFORMANCE
STABILITY
BA0.5SR0.5CO0.8FE0.2O3-DELTA
MICROSTRUCTURE
DEGRADATION
ELECTROLYTE
ATMOSPHERES
SOFCS

UN SDGs

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

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@article{0845856068c743edaf5454b36d0cf54b,

title = "A Highly Active Perovskite Cathode for Low-Temperature Solid Oxide Fuel Cells: BaCo0.7Fe0.22Sc0.08O3-δ",

abstract = "Low-temperature solid oxide fuel cells (LT-SOFCs) have attracted much attention for their long-term stability, short start-up time, and economic competitiveness. Development of a high electrochemical active cathode for the oxygen reduction reaction (ORR) is the key to LT-SOFCs. In this study, a cubic perovskite BaCo0.7Fe0.22Sc0.08O3-δ (BCFSc) is synthesized and investigated. It exhibits extremely low polarization resistances (e.g., 0.03 Omega cm2 at 600 °C) in symmetric cell using Ce0.8Sm0.2O1.9 (SDC) as the electrolyte, indicating an excellent ORR catalytic activity. A maximum output power density of 1446 mW cm-2 is achieved at 600 °C for a single cell with an anode functional layer, which is much larger than the one without it (1045 mW cm-2). The favorable performance enables BCFSc to be a candidate cathode for LT-SOFCs.",

keywords = "catalytic activity, cathodes, cubic perovskites, solid state fuel cells, OXYGEN REDUCTION, MEMBRANES, PERFORMANCE, STABILITY, BA0.5SR0.5CO0.8FE0.2O3-DELTA, MICROSTRUCTURE, DEGRADATION, ELECTROLYTE, ATMOSPHERES, SOFCS",

author = "Wei He and Fei-Fei Dong and Xue-Lian Wu and Meng Ni",

year = "2017",

month = may,

doi = "10.1002/adsu.201700005",

language = "English",

volume = "1",

number = "5",

}

TY - JOUR

T1 - A Highly Active Perovskite Cathode for Low-Temperature Solid Oxide Fuel Cells

T2 - BaCo0.7Fe0.22Sc0.08O3-δ

AU - He, Wei

AU - Dong, Fei-Fei

AU - Wu, Xue-Lian

AU - Ni, Meng

PY - 2017/5

Y1 - 2017/5

N2 - Low-temperature solid oxide fuel cells (LT-SOFCs) have attracted much attention for their long-term stability, short start-up time, and economic competitiveness. Development of a high electrochemical active cathode for the oxygen reduction reaction (ORR) is the key to LT-SOFCs. In this study, a cubic perovskite BaCo0.7Fe0.22Sc0.08O3-δ (BCFSc) is synthesized and investigated. It exhibits extremely low polarization resistances (e.g., 0.03 Omega cm2 at 600 °C) in symmetric cell using Ce0.8Sm0.2O1.9 (SDC) as the electrolyte, indicating an excellent ORR catalytic activity. A maximum output power density of 1446 mW cm-2 is achieved at 600 °C for a single cell with an anode functional layer, which is much larger than the one without it (1045 mW cm-2). The favorable performance enables BCFSc to be a candidate cathode for LT-SOFCs.

AB - Low-temperature solid oxide fuel cells (LT-SOFCs) have attracted much attention for their long-term stability, short start-up time, and economic competitiveness. Development of a high electrochemical active cathode for the oxygen reduction reaction (ORR) is the key to LT-SOFCs. In this study, a cubic perovskite BaCo0.7Fe0.22Sc0.08O3-δ (BCFSc) is synthesized and investigated. It exhibits extremely low polarization resistances (e.g., 0.03 Omega cm2 at 600 °C) in symmetric cell using Ce0.8Sm0.2O1.9 (SDC) as the electrolyte, indicating an excellent ORR catalytic activity. A maximum output power density of 1446 mW cm-2 is achieved at 600 °C for a single cell with an anode functional layer, which is much larger than the one without it (1045 mW cm-2). The favorable performance enables BCFSc to be a candidate cathode for LT-SOFCs.

KW - catalytic activity

KW - cathodes

KW - cubic perovskites

KW - solid state fuel cells

KW - OXYGEN REDUCTION

KW - MEMBRANES

KW - PERFORMANCE

KW - STABILITY

KW - BA0.5SR0.5CO0.8FE0.2O3-DELTA

KW - MICROSTRUCTURE

KW - DEGRADATION

KW - ELECTROLYTE

KW - ATMOSPHERES

KW - SOFCS

U2 - 10.1002/adsu.201700005

DO - 10.1002/adsu.201700005

M3 - RGC 21 - Publication in refereed journal

SN - 2366-7486

VL - 1

JO - Advanced Sustainable Systems

JF - Advanced Sustainable Systems

IS - 5

M1 - 1700005

ER -