Ionic liquid-derivatized hierarchical N-doped carbon-coated Co3O4 nanosheet array as high-performance anode materials for lithium-ion batteries

Ruinian Li; Yanshuang Meng; Qianru Hu; Fuliang Zhu; Yue Zhang

doi:10.1007/s10854-020-03066-7

Ionic liquid-derivatized hierarchical N-doped carbon-coated Co₃O₄ nanosheet array as high-performance anode materials for lithium-ion batteries

Ruinian Li, Yanshuang Meng, Qianru Hu, Fuliang Zhu, Yue Zhang

Manufacturing Engineering

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

3 Scopus citations

Abstract

A novel nitrogen-doped carbon-coated graded Co₃O₄ nanosheets (NDC/Co₃O₄ NS) is synthesized by using a simple ionic liquid hydrothermal method. The as-prepared NDC/Co₃O₄ NS is composed of hexagonal nanosheets having different orientation and the thickness of 50–100 nm. Significantly, as an anode electrode for lithium-ion batteries (LIBs), the NDC/Co₃O₄ NS performed excellent cyclability. The NDC/Co₃O₄ NS delivers an initial discharge capacity of 1281.4 mAh g⁻¹ at 445 mA g⁻¹ and maintains a reversible high capacity of 929.4 mAh g⁻¹ after 50 cycles, much higher than the unmodified Co₃O₄ nanosheets (230 mAh g⁻¹). The superior excellent electrochemical performance can be attributed to the gradient structure and the nitrogen-doped carbon coating resulting in shorter ion transport distances and good electrical conductivity.

Original language	English
Pages (from-to)	4997-5007
Number of pages	11
Journal	Journal of Materials Science: Materials in Electronics
Volume	31
Issue number	6
DOIs	https://doi.org/10.1007/s10854-020-03066-7
State	Published - Mar 1 2020

Scopus Subject Areas

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Condensed Matter Physics
Electrical and Electronic Engineering

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Access to Document

10.1007/s10854-020-03066-7

Cite this

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title = "Ionic liquid-derivatized hierarchical N-doped carbon-coated Co3O4 nanosheet array as high-performance anode materials for lithium-ion batteries",

abstract = "A novel nitrogen-doped carbon-coated graded Co3O4 nanosheets (NDC/Co3O4 NS) is synthesized by using a simple ionic liquid hydrothermal method. The as-prepared NDC/Co3O4 NS is composed of hexagonal nanosheets having different orientation and the thickness of 50–100 nm. Significantly, as an anode electrode for lithium-ion batteries (LIBs), the NDC/Co3O4 NS performed excellent cyclability. The NDC/Co3O4 NS delivers an initial discharge capacity of 1281.4 mAh g−1 at 445 mA g−1 and maintains a reversible high capacity of 929.4 mAh g−1 after 50 cycles, much higher than the unmodified Co3O4 nanosheets (230 mAh g−1). The superior excellent electrochemical performance can be attributed to the gradient structure and the nitrogen-doped carbon coating resulting in shorter ion transport distances and good electrical conductivity.",

author = "Ruinian Li and Yanshuang Meng and Qianru Hu and Fuliang Zhu and Yue Zhang",

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T1 - Ionic liquid-derivatized hierarchical N-doped carbon-coated Co3O4 nanosheet array as high-performance anode materials for lithium-ion batteries

AU - Li, Ruinian

AU - Meng, Yanshuang

AU - Hu, Qianru

AU - Zhu, Fuliang

AU - Zhang, Yue

PY - 2020/3/1

Y1 - 2020/3/1

N2 - A novel nitrogen-doped carbon-coated graded Co3O4 nanosheets (NDC/Co3O4 NS) is synthesized by using a simple ionic liquid hydrothermal method. The as-prepared NDC/Co3O4 NS is composed of hexagonal nanosheets having different orientation and the thickness of 50–100 nm. Significantly, as an anode electrode for lithium-ion batteries (LIBs), the NDC/Co3O4 NS performed excellent cyclability. The NDC/Co3O4 NS delivers an initial discharge capacity of 1281.4 mAh g−1 at 445 mA g−1 and maintains a reversible high capacity of 929.4 mAh g−1 after 50 cycles, much higher than the unmodified Co3O4 nanosheets (230 mAh g−1). The superior excellent electrochemical performance can be attributed to the gradient structure and the nitrogen-doped carbon coating resulting in shorter ion transport distances and good electrical conductivity.

AB - A novel nitrogen-doped carbon-coated graded Co3O4 nanosheets (NDC/Co3O4 NS) is synthesized by using a simple ionic liquid hydrothermal method. The as-prepared NDC/Co3O4 NS is composed of hexagonal nanosheets having different orientation and the thickness of 50–100 nm. Significantly, as an anode electrode for lithium-ion batteries (LIBs), the NDC/Co3O4 NS performed excellent cyclability. The NDC/Co3O4 NS delivers an initial discharge capacity of 1281.4 mAh g−1 at 445 mA g−1 and maintains a reversible high capacity of 929.4 mAh g−1 after 50 cycles, much higher than the unmodified Co3O4 nanosheets (230 mAh g−1). The superior excellent electrochemical performance can be attributed to the gradient structure and the nitrogen-doped carbon coating resulting in shorter ion transport distances and good electrical conductivity.

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