Copper/cobalt-doped LaMnO3 perovskite oxide as a bifunctional catalyst for rechargeable Li-O2 batteries

Yue Lv; Zhixing Li; Yawei Yu; Jiguang Yin; Kefan Song; Bingqian Yang; Lefan Yuan; Xiulan Hu

doi:10.1016/j.jallcom.2019.06.114

Copper/cobalt-doped LaMnO₃ perovskite oxide as a bifunctional catalyst for rechargeable Li-O₂ batteries

Yue Lv, Zhixing Li, Yawei Yu, Jiguang Yin, Kefan Song, Bingqian Yang, Lefan Yuan, Xiulan Hu

College of Materials Science and Engineering

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

61 Scopus citations

Abstract

Copper/cobalt-doped perovskite oxide LaMn_0.8M_0.2O₃ (M = Cu, Co) composites are synthesized through gel combustion with urea as the chelating agent and fuel. Both LaMn_0.8Cu_0.2O₃ and LaMn_0.8Co_0.2O₃ exhibit better catalytic performances for OER and ORR than LaMnO₃ in alkaline media due to the abundance of oxygen vacancies and Mn⁴⁺ caused by the substitution of different valence elements. When used as a cathode catalyst in Li-O₂ batteries, LaMn_0.8Co_0.2O₃ can perform 91 stable cycles at 100 mA g⁻¹ and the discharge specific capacity can reach up to 9620 mA h g⁻¹ at 500 mA g⁻¹. LaMn_0.8Co_0.2O₃ has a longer cycle life and larger discharge capacity compared to LaMnO₃ and LaMn_0.8Cu_0.2O₃.

Original language	English
Pages (from-to)	19-26
Number of pages	8
Journal	Journal of Alloys and Compounds
Volume	801
DOIs	https://doi.org/10.1016/j.jallcom.2019.06.114
State	Published - 15 Sep 2019

Keywords

B-site doping
Gel combustion
Li-O batteries
Perovskite oxides

Access to Document

10.1016/j.jallcom.2019.06.114

Cite this

@article{0006e92e3a944482b50dee66659e1c34,

title = "Copper/cobalt-doped LaMnO3 perovskite oxide as a bifunctional catalyst for rechargeable Li-O2 batteries",

abstract = "Copper/cobalt-doped perovskite oxide LaMn0.8M0.2O3 (M = Cu, Co) composites are synthesized through gel combustion with urea as the chelating agent and fuel. Both LaMn0.8Cu0.2O3 and LaMn0.8Co0.2O3 exhibit better catalytic performances for OER and ORR than LaMnO3 in alkaline media due to the abundance of oxygen vacancies and Mn4+ caused by the substitution of different valence elements. When used as a cathode catalyst in Li-O2 batteries, LaMn0.8Co0.2O3 can perform 91 stable cycles at 100 mA g−1 and the discharge specific capacity can reach up to 9620 mA h g−1 at 500 mA g−1. LaMn0.8Co0.2O3 has a longer cycle life and larger discharge capacity compared to LaMnO3 and LaMn0.8Cu0.2O3.",

keywords = "B-site doping, Gel combustion, Li-O batteries, Perovskite oxides",

author = "Yue Lv and Zhixing Li and Yawei Yu and Jiguang Yin and Kefan Song and Bingqian Yang and Lefan Yuan and Xiulan Hu",

note = "Publisher Copyright: {\textcopyright} 2019 Elsevier B.V.",

year = "2019",

month = sep,

day = "15",

doi = "10.1016/j.jallcom.2019.06.114",

language = "英语",

volume = "801",

pages = "19--26",

journal = "Journal of Alloys and Compounds",

issn = "0925-8388",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Copper/cobalt-doped LaMnO3 perovskite oxide as a bifunctional catalyst for rechargeable Li-O2 batteries

AU - Lv, Yue

AU - Li, Zhixing

AU - Yu, Yawei

AU - Yin, Jiguang

AU - Song, Kefan

AU - Yang, Bingqian

AU - Yuan, Lefan

AU - Hu, Xiulan

PY - 2019/9/15

Y1 - 2019/9/15

N2 - Copper/cobalt-doped perovskite oxide LaMn0.8M0.2O3 (M = Cu, Co) composites are synthesized through gel combustion with urea as the chelating agent and fuel. Both LaMn0.8Cu0.2O3 and LaMn0.8Co0.2O3 exhibit better catalytic performances for OER and ORR than LaMnO3 in alkaline media due to the abundance of oxygen vacancies and Mn4+ caused by the substitution of different valence elements. When used as a cathode catalyst in Li-O2 batteries, LaMn0.8Co0.2O3 can perform 91 stable cycles at 100 mA g−1 and the discharge specific capacity can reach up to 9620 mA h g−1 at 500 mA g−1. LaMn0.8Co0.2O3 has a longer cycle life and larger discharge capacity compared to LaMnO3 and LaMn0.8Cu0.2O3.

AB - Copper/cobalt-doped perovskite oxide LaMn0.8M0.2O3 (M = Cu, Co) composites are synthesized through gel combustion with urea as the chelating agent and fuel. Both LaMn0.8Cu0.2O3 and LaMn0.8Co0.2O3 exhibit better catalytic performances for OER and ORR than LaMnO3 in alkaline media due to the abundance of oxygen vacancies and Mn4+ caused by the substitution of different valence elements. When used as a cathode catalyst in Li-O2 batteries, LaMn0.8Co0.2O3 can perform 91 stable cycles at 100 mA g−1 and the discharge specific capacity can reach up to 9620 mA h g−1 at 500 mA g−1. LaMn0.8Co0.2O3 has a longer cycle life and larger discharge capacity compared to LaMnO3 and LaMn0.8Cu0.2O3.

KW - B-site doping

KW - Gel combustion

KW - Li-O batteries

KW - Perovskite oxides

UR - http://www.scopus.com/inward/record.url?scp=85067262679&partnerID=8YFLogxK

U2 - 10.1016/j.jallcom.2019.06.114

DO - 10.1016/j.jallcom.2019.06.114

M3 - 文章

AN - SCOPUS:85067262679

SN - 0925-8388

VL - 801

SP - 19

EP - 26

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

ER -

Copper/cobalt-doped LaMnO₃ perovskite oxide as a bifunctional catalyst for rechargeable Li-O₂ batteries

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this