Yolk-shell Co3O4-CoO/carbon composites for lithium-ion batteries with enhanced electrochemical properties

Gongrui Wang; Yanshuang Meng; Lei Wang; Jun Xia; Fuliang Zhu; Yue Zhang

doi:10.20964/2017.04.73

Yolk-shell Co₃O₄-CoO/carbon composites for lithium-ion batteries with enhanced electrochemical properties

Gongrui Wang
, Yanshuang Meng
, Lei Wang
, Jun Xia
, Fuliang Zhu
, Yue Zhang

Manufacturing Engineering

Lanzhou University of Technology
State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals
Texas A&M University-Kingsville

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

13 Scopus citations

2 Downloads (Pure)

Abstract

A novel yolk-shell structured Co₃O₄-CoO/Carbon (Co₃O₄-CoO/C) composite was prepared and applied as cathode active materials in lithium ion batteries. The composites were prepared through a facile copolymerization of ionic liquid and acrylonitrile, which were used as carbon sources, followed by carbonization. The yolk-shell structure of the composite endows the electrodes with excellent cycling performance due to improved electronic conductivity, reduced strain and depressed aggregation of active materials compared with bare Co₃O₄. Thus, the Co₃O₄-CoO/C composite showed a high reversible capacity and cycling life of 590 mAh·g^-1 after 50 charge/discharge cycles at a current rate of 890 mAh·g^-1.

Original language	English
Pages (from-to)	2618-2627
Number of pages	10
Journal	International Journal of Electrochemical Science
Volume	12
Issue number	4
DOIs	https://doi.org/10.20964/2017.04.73
State	Published - Apr 1 2017

UN SDGs

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

SDG 7 Affordable and Clean Energy

Scopus Subject Areas

Electrochemistry

Keywords

CoO-CoO/Carbon Composites
Lithium-ion batteries
Yolk-shell structure

Access to Document

10.20964/2017.04.73

Cite this

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title = "Yolk-shell Co3O4-CoO/carbon composites for lithium-ion batteries with enhanced electrochemical properties",

abstract = "A novel yolk-shell structured Co3O4-CoO/Carbon (Co3O4-CoO/C) composite was prepared and applied as cathode active materials in lithium ion batteries. The composites were prepared through a facile copolymerization of ionic liquid and acrylonitrile, which were used as carbon sources, followed by carbonization. The yolk-shell structure of the composite endows the electrodes with excellent cycling performance due to improved electronic conductivity, reduced strain and depressed aggregation of active materials compared with bare Co3O4. Thus, the Co3O4-CoO/C composite showed a high reversible capacity and cycling life of 590 mAh·g-1 after 50 charge/discharge cycles at a current rate of 890 mAh·g-1.",

keywords = "CoO-CoO/Carbon Composites, Lithium-ion batteries, Yolk-shell structure",

author = "Gongrui Wang and Yanshuang Meng and Lei Wang and Jun Xia and Fuliang Zhu and Yue Zhang",

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T1 - Yolk-shell Co3O4-CoO/carbon composites for lithium-ion batteries with enhanced electrochemical properties

AU - Wang, Gongrui

AU - Meng, Yanshuang

AU - Wang, Lei

AU - Xia, Jun

AU - Zhu, Fuliang

AU - Zhang, Yue

PY - 2017/4/1

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N2 - A novel yolk-shell structured Co3O4-CoO/Carbon (Co3O4-CoO/C) composite was prepared and applied as cathode active materials in lithium ion batteries. The composites were prepared through a facile copolymerization of ionic liquid and acrylonitrile, which were used as carbon sources, followed by carbonization. The yolk-shell structure of the composite endows the electrodes with excellent cycling performance due to improved electronic conductivity, reduced strain and depressed aggregation of active materials compared with bare Co3O4. Thus, the Co3O4-CoO/C composite showed a high reversible capacity and cycling life of 590 mAh·g-1 after 50 charge/discharge cycles at a current rate of 890 mAh·g-1.

AB - A novel yolk-shell structured Co3O4-CoO/Carbon (Co3O4-CoO/C) composite was prepared and applied as cathode active materials in lithium ion batteries. The composites were prepared through a facile copolymerization of ionic liquid and acrylonitrile, which were used as carbon sources, followed by carbonization. The yolk-shell structure of the composite endows the electrodes with excellent cycling performance due to improved electronic conductivity, reduced strain and depressed aggregation of active materials compared with bare Co3O4. Thus, the Co3O4-CoO/C composite showed a high reversible capacity and cycling life of 590 mAh·g-1 after 50 charge/discharge cycles at a current rate of 890 mAh·g-1.

KW - CoO-CoO/Carbon Composites

KW - Lithium-ion batteries

KW - Yolk-shell structure

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