Perovskite La0.6Sr0.4Co0.2Fe0.8O3 as an effective electrocatalyst for non-aqueous lithium air batteries

Junfang Cheng; Ming Zhang; Yuexing Jiang; Lu Zou; Yingpeng Gong; Bo Chi; Jian Pu; Li Jian

doi:10.1016/j.electacta.2016.01.058

Perovskite La_0.6Sr_0.4Co_0.2Fe_0.8O₃ as an effective electrocatalyst for non-aqueous lithium air batteries

Junfang Cheng, Ming Zhang, Yuexing Jiang, Lu Zou, Yingpeng Gong, Bo Chi^*, Jian Pu, Li Jian

^*Corresponding author for this work

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

53 Citations (Scopus)

Abstract

Non-aqueous lithium air batteries with high energy density have been regarded to be the most attractive contender in the future energy storage techniques. Herein, the perovskite La_0.6Sr_0.4Co_0.2Fe_0.8O₃ (LSCF) nanoparticles are studied as the cathode catalyst for non-aqueous lithium air batteries. The results confirm that nanostructured LSCF exhibits admirable electrochemical activity and can effectively reduce the overpotential. Batteries with LSCF catalyst can increase the discharge capacity from 9678 mAh g^-1 to 13979 mAh g^-1 and improve the cycle stability from 10 cycles to 20 cycles at 200 mA g^-1. The study reveals that the formation and decomposition processes of Li₂O₂ can be effectively promoted by the introduction of LSCF nanoparticles. The possible catalytic mechanism of LSCF in reducing overpotential is also proposed.

Original language	English
Pages (from-to)	106-115
Number of pages	10
Journal	Electrochimica Acta
Volume	191
DOIs	https://doi.org/10.1016/j.electacta.2016.01.058
Publication status	Published - 2016 Feb 10
Externally published	Yes

Keywords

Catalytic mechanism
Electrochemical activity
Lithium air batteries
Overpotential
Perovskite LSCF

ASJC Scopus subject areas

Chemical Engineering(all)
Electrochemistry

Access to Document

10.1016/j.electacta.2016.01.058

Cite this

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title = "Perovskite La0.6Sr0.4Co0.2Fe0.8O3 as an effective electrocatalyst for non-aqueous lithium air batteries",

abstract = "Non-aqueous lithium air batteries with high energy density have been regarded to be the most attractive contender in the future energy storage techniques. Herein, the perovskite La0.6Sr0.4Co0.2Fe0.8O3 (LSCF) nanoparticles are studied as the cathode catalyst for non-aqueous lithium air batteries. The results confirm that nanostructured LSCF exhibits admirable electrochemical activity and can effectively reduce the overpotential. Batteries with LSCF catalyst can increase the discharge capacity from 9678 mAh g-1 to 13979 mAh g-1 and improve the cycle stability from 10 cycles to 20 cycles at 200 mA g-1. The study reveals that the formation and decomposition processes of Li2O2 can be effectively promoted by the introduction of LSCF nanoparticles. The possible catalytic mechanism of LSCF in reducing overpotential is also proposed.",

keywords = "Catalytic mechanism, Electrochemical activity, Lithium air batteries, Overpotential, Perovskite LSCF",

author = "Junfang Cheng and Ming Zhang and Yuexing Jiang and Lu Zou and Yingpeng Gong and Bo Chi and Jian Pu and Li Jian",

note = "Funding Information: The authors would like to thank Materials Characterization Center of Huazhong University of Science and Technology for samples characterization assistance and the Innovation Foundation of Graduate Innovation and Entrepreneurship Base of HUST (No. 2015650011 ) for financial support. Publisher Copyright: {\textcopyright} 2016 Elsevier Ltd. All rights reserved.",

year = "2016",

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day = "10",

doi = "10.1016/j.electacta.2016.01.058",

language = "English",

volume = "191",

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journal = "Electrochimica Acta",

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T1 - Perovskite La0.6Sr0.4Co0.2Fe0.8O3 as an effective electrocatalyst for non-aqueous lithium air batteries

AU - Cheng, Junfang

AU - Zhang, Ming

AU - Jiang, Yuexing

AU - Zou, Lu

AU - Gong, Yingpeng

AU - Chi, Bo

AU - Pu, Jian

AU - Jian, Li

N1 - Funding Information: The authors would like to thank Materials Characterization Center of Huazhong University of Science and Technology for samples characterization assistance and the Innovation Foundation of Graduate Innovation and Entrepreneurship Base of HUST (No. 2015650011 ) for financial support. Publisher Copyright: © 2016 Elsevier Ltd. All rights reserved.

PY - 2016/2/10

Y1 - 2016/2/10

N2 - Non-aqueous lithium air batteries with high energy density have been regarded to be the most attractive contender in the future energy storage techniques. Herein, the perovskite La0.6Sr0.4Co0.2Fe0.8O3 (LSCF) nanoparticles are studied as the cathode catalyst for non-aqueous lithium air batteries. The results confirm that nanostructured LSCF exhibits admirable electrochemical activity and can effectively reduce the overpotential. Batteries with LSCF catalyst can increase the discharge capacity from 9678 mAh g-1 to 13979 mAh g-1 and improve the cycle stability from 10 cycles to 20 cycles at 200 mA g-1. The study reveals that the formation and decomposition processes of Li2O2 can be effectively promoted by the introduction of LSCF nanoparticles. The possible catalytic mechanism of LSCF in reducing overpotential is also proposed.

AB - Non-aqueous lithium air batteries with high energy density have been regarded to be the most attractive contender in the future energy storage techniques. Herein, the perovskite La0.6Sr0.4Co0.2Fe0.8O3 (LSCF) nanoparticles are studied as the cathode catalyst for non-aqueous lithium air batteries. The results confirm that nanostructured LSCF exhibits admirable electrochemical activity and can effectively reduce the overpotential. Batteries with LSCF catalyst can increase the discharge capacity from 9678 mAh g-1 to 13979 mAh g-1 and improve the cycle stability from 10 cycles to 20 cycles at 200 mA g-1. The study reveals that the formation and decomposition processes of Li2O2 can be effectively promoted by the introduction of LSCF nanoparticles. The possible catalytic mechanism of LSCF in reducing overpotential is also proposed.

KW - Catalytic mechanism

KW - Electrochemical activity

KW - Lithium air batteries

KW - Overpotential

KW - Perovskite LSCF

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