BaCo0.7Fe0.22Y0.08O3-δ as an Active Oxygen Reduction Electrocatalyst for Low-Temperature Solid Oxide Fuel Cells below 600 °C

Wei He; Xuelian Wu; Guangming Yang; Huangang Shi; Feifei Dong; Meng Ni

doi:10.1021/acsenergylett.6b00617

BaCo_0.7Fe_0.22Y_0.08O_3-δ as an Active Oxygen Reduction Electrocatalyst for Low-Temperature Solid Oxide Fuel Cells below 600 °C

Wei He
, Xuelian Wu
, Guangming Yang
, Huangang Shi
, Feifei Dong^*
, Meng Ni^*

^*Corresponding author for this work

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

85 Citations (Scopus)

Abstract

Solid oxide fuel cells (SOFCs) offer great promise as sustainable energy conversion devices due to their high chemical-to electrical conversion efficiency, flexible fuel sources, and low pollutions. In recent years, much effort has been devoted to developing intermediate temperature SOFCs. Central to the devices is the availability of a highly effective electrocatalyst for oxygen reduction reaction with reduced temperature operation, especially below 600 ºC. Here we present a novel B-site Y-doped perovskite-type oxide BaCo_0.7Fe_0.22Y_0.08O_3-σ (BCFY) with extremely low polarization resistances (e.g., 0.10 Ω cm² at 550 °C), which is ascribed to high cubic symmetry structure and fast oxygen kinetics. The superior electrocatalytic activity and stability enable BCFY to be a promising cathode candidate toward the application of reduced temperature SOFCs.

Original language	English
Pages (from-to)	301-305
Journal	ACS Energy Letters
Volume	2
Issue number	2
Online published	6 Jan 2017
DOIs	https://doi.org/10.1021/acsenergylett.6b00617
Publication status	Published - 10 Feb 2017

Funding

This study was supported by a grant (Project Number: PolyU 152127/14E) from the Research Grant Council, University Grants Committee, Hong Kong SAR, a grant from The Hong Kong Polytechnic University (Account: 1-ZVFQ), and the National Natural Science Foundation of China (Contract No. 51302135).

UN SDGs

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

SDG 7 Affordable and Clean Energy

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Cite this

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title = "BaCo0.7Fe0.22Y0.08O3-δ as an Active Oxygen Reduction Electrocatalyst for Low-Temperature Solid Oxide Fuel Cells below 600 °C",

abstract = "Solid oxide fuel cells (SOFCs) offer great promise as sustainable energy conversion devices due to their high chemical-to electrical conversion efficiency, flexible fuel sources, and low pollutions. In recent years, much effort has been devoted to developing intermediate temperature SOFCs. Central to the devices is the availability of a highly effective electrocatalyst for oxygen reduction reaction with reduced temperature operation, especially below 600 ºC. Here we present a novel B-site Y-doped perovskite-type oxide BaCo0.7Fe0.22Y0.08O3-σ (BCFY) with extremely low polarization resistances (e.g., 0.10 Ω cm2 at 550 °C), which is ascribed to high cubic symmetry structure and fast oxygen kinetics. The superior electrocatalytic activity and stability enable BCFY to be a promising cathode candidate toward the application of reduced temperature SOFCs.",

author = "Wei He and Xuelian Wu and Guangming Yang and Huangang Shi and Feifei Dong and Meng Ni",

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T1 - BaCo0.7Fe0.22Y0.08O3-δ as an Active Oxygen Reduction Electrocatalyst for Low-Temperature Solid Oxide Fuel Cells below 600 °C

AU - He, Wei

AU - Wu, Xuelian

AU - Yang, Guangming

AU - Shi, Huangang

AU - Dong, Feifei

AU - Ni, Meng

PY - 2017/2/10

Y1 - 2017/2/10

N2 - Solid oxide fuel cells (SOFCs) offer great promise as sustainable energy conversion devices due to their high chemical-to electrical conversion efficiency, flexible fuel sources, and low pollutions. In recent years, much effort has been devoted to developing intermediate temperature SOFCs. Central to the devices is the availability of a highly effective electrocatalyst for oxygen reduction reaction with reduced temperature operation, especially below 600 ºC. Here we present a novel B-site Y-doped perovskite-type oxide BaCo0.7Fe0.22Y0.08O3-σ (BCFY) with extremely low polarization resistances (e.g., 0.10 Ω cm2 at 550 °C), which is ascribed to high cubic symmetry structure and fast oxygen kinetics. The superior electrocatalytic activity and stability enable BCFY to be a promising cathode candidate toward the application of reduced temperature SOFCs.

AB - Solid oxide fuel cells (SOFCs) offer great promise as sustainable energy conversion devices due to their high chemical-to electrical conversion efficiency, flexible fuel sources, and low pollutions. In recent years, much effort has been devoted to developing intermediate temperature SOFCs. Central to the devices is the availability of a highly effective electrocatalyst for oxygen reduction reaction with reduced temperature operation, especially below 600 ºC. Here we present a novel B-site Y-doped perovskite-type oxide BaCo0.7Fe0.22Y0.08O3-σ (BCFY) with extremely low polarization resistances (e.g., 0.10 Ω cm2 at 550 °C), which is ascribed to high cubic symmetry structure and fast oxygen kinetics. The superior electrocatalytic activity and stability enable BCFY to be a promising cathode candidate toward the application of reduced temperature SOFCs.

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U2 - 10.1021/acsenergylett.6b00617

DO - 10.1021/acsenergylett.6b00617

M3 - RGC 21 - Publication in refereed journal

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JO - ACS Energy Letters

JF - ACS Energy Letters

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