Perovskite-type La0.8Sr0.2Co0.8Fe0.2O3 with uniform dispersion on N-doped reduced graphene oxide as an efficient bi-functional Li-O2 battery cathode

Junfang Cheng; Yuexing Jiang; Ming Zhang; Lu Zou; Yizhen Huang; Ziling Wang; Bo Chi; Jian Pu; Jian Li

doi:10.1039/c7cp00110j

Perovskite-type La_0.8Sr_0.2Co_0.8Fe_0.2O₃ with uniform dispersion on N-doped reduced graphene oxide as an efficient bi-functional Li-O₂ battery cathode

Junfang Cheng, Yuexing Jiang, Ming Zhang, Lu Zou, Yizhen Huang, Ziling Wang, Bo Chi^*, Jian Pu, Jian Li

^*Corresponding author for this work

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

26 Citations (Scopus)

Abstract

A bi-functional Li-O₂ battery cathode composed of perovskite oxide La_0.8Sr_0.22Co_0.8Fe_0.2O₃ (LSCF8282) and N-doped reduced graphene oxide (N-rGO) was prepared by a sol-gel method and hydrothermal treatment. LSCF nanoparticles were dispersed homogeneously on the surface of N-rGO and the composite cathode was investigated for Li-O₂ batteries. The results confirmed that Li-O₂ batteries with the LSCF@N-rGO cathode exhibited better cycle stability than both LSCF-SP (Super P) and pure N-rGO cathodes. Furthermore batteries with the LSCF@N-rGO cathode showed higher capacity coulombic efficiency and lower overpotential compared with those with the pure N-rGO cathode. EIS study and morphology evolution of products revealed that LSCF can remold the shape of Li₂O₂ and catalyze the decomposition of i₂O₂ which is crucial for oxygen reduction reaction and oxygen evolution reaction processes.

Original language	English
Pages (from-to)	10227-10230
Number of pages	4
Journal	Physical Chemistry Chemical Physics
Volume	19
Issue number	16
DOIs	https://doi.org/10.1039/c7cp00110j
Publication status	Published - 2017
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy(all)
Physical and Theoretical Chemistry

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@article{b7cb029096ca47369c078912d2d0207c,

title = "Perovskite-type La0.8Sr0.2Co0.8Fe0.2O3 with uniform dispersion on N-doped reduced graphene oxide as an efficient bi-functional Li-O2 battery cathode",

abstract = "A bi-functional Li-O2 battery cathode composed of perovskite oxide La0.8Sr0.22Co0.8Fe0.2O3 (LSCF8282) and N-doped reduced graphene oxide (N-rGO) was prepared by a sol-gel method and hydrothermal treatment. LSCF nanoparticles were dispersed homogeneously on the surface of N-rGO and the composite cathode was investigated for Li-O2 batteries. The results confirmed that Li-O2 batteries with the LSCF@N-rGO cathode exhibited better cycle stability than both LSCF-SP (Super P) and pure N-rGO cathodes. Furthermore batteries with the LSCF@N-rGO cathode showed higher capacity coulombic efficiency and lower overpotential compared with those with the pure N-rGO cathode. EIS study and morphology evolution of products revealed that LSCF can remold the shape of Li2O2 and catalyze the decomposition of i2O2 which is crucial for oxygen reduction reaction and oxygen evolution reaction processes.",

author = "Junfang Cheng and Yuexing Jiang and Ming Zhang and Lu Zou and Yizhen Huang and Ziling Wang and Bo Chi and Jian Pu and Jian Li",

note = "Funding Information: The authors would like to thank Materials Characterization Center of Huazhong University of Science and Technology for sample characterization assistance and the Innovation Foundation of Graduate Innovation and Entrepreneurship Base of HUST (No. 2015650011) for financial support.",

year = "2017",

doi = "10.1039/c7cp00110j",

language = "English",

volume = "19",

pages = "10227--10230",

journal = "Physical Chemistry Chemical Physics",

issn = "1463-9076",

publisher = "Royal Society of Chemistry",

number = "16",

}

TY - JOUR

T1 - Perovskite-type La0.8Sr0.2Co0.8Fe0.2O3 with uniform dispersion on N-doped reduced graphene oxide as an efficient bi-functional Li-O2 battery cathode

AU - Cheng, Junfang

AU - Jiang, Yuexing

AU - Zhang, Ming

AU - Zou, Lu

AU - Huang, Yizhen

AU - Wang, Ziling

AU - Chi, Bo

AU - Pu, Jian

AU - Li, Jian

N1 - Funding Information: The authors would like to thank Materials Characterization Center of Huazhong University of Science and Technology for sample characterization assistance and the Innovation Foundation of Graduate Innovation and Entrepreneurship Base of HUST (No. 2015650011) for financial support.

PY - 2017

Y1 - 2017

N2 - A bi-functional Li-O2 battery cathode composed of perovskite oxide La0.8Sr0.22Co0.8Fe0.2O3 (LSCF8282) and N-doped reduced graphene oxide (N-rGO) was prepared by a sol-gel method and hydrothermal treatment. LSCF nanoparticles were dispersed homogeneously on the surface of N-rGO and the composite cathode was investigated for Li-O2 batteries. The results confirmed that Li-O2 batteries with the LSCF@N-rGO cathode exhibited better cycle stability than both LSCF-SP (Super P) and pure N-rGO cathodes. Furthermore batteries with the LSCF@N-rGO cathode showed higher capacity coulombic efficiency and lower overpotential compared with those with the pure N-rGO cathode. EIS study and morphology evolution of products revealed that LSCF can remold the shape of Li2O2 and catalyze the decomposition of i2O2 which is crucial for oxygen reduction reaction and oxygen evolution reaction processes.

AB - A bi-functional Li-O2 battery cathode composed of perovskite oxide La0.8Sr0.22Co0.8Fe0.2O3 (LSCF8282) and N-doped reduced graphene oxide (N-rGO) was prepared by a sol-gel method and hydrothermal treatment. LSCF nanoparticles were dispersed homogeneously on the surface of N-rGO and the composite cathode was investigated for Li-O2 batteries. The results confirmed that Li-O2 batteries with the LSCF@N-rGO cathode exhibited better cycle stability than both LSCF-SP (Super P) and pure N-rGO cathodes. Furthermore batteries with the LSCF@N-rGO cathode showed higher capacity coulombic efficiency and lower overpotential compared with those with the pure N-rGO cathode. EIS study and morphology evolution of products revealed that LSCF can remold the shape of Li2O2 and catalyze the decomposition of i2O2 which is crucial for oxygen reduction reaction and oxygen evolution reaction processes.

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DO - 10.1039/c7cp00110j

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SN - 1463-9076

VL - 19

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JO - Physical Chemistry Chemical Physics

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Perovskite-type La_0.8Sr_0.2Co_0.8Fe_0.2O₃ with uniform dispersion on N-doped reduced graphene oxide as an efficient bi-functional Li-O₂ battery cathode

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