Preparation and Electrochemical Properties of Small Flake Expanded Graphite

Li Fei; Gao Lun; Peng Chenglong; Shen Yi; Huang Yanqiu; Li Zhen; Ye Houli

doi:10.3969/j.issn.1000-6532.2022.02.028

2022 No. 2

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Article navigation > Multipurpose Utilization of Mineral Resources > 2022 > (2): 154-157

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Li Fei, Gao Lun, Peng Chenglong, Shen Yi, Huang Yanqiu, Li Zhen, Ye Houli. Preparation and Electrochemical Properties of Small Flake Expanded Graphite[J]. Multipurpose Utilization of Mineral Resources, 2022, (2): 154-157. doi: 10.3969/j.issn.1000-6532.2022.02.028

Citation:

Li Fei, Gao Lun, Peng Chenglong, Shen Yi, Huang Yanqiu, Li Zhen, Ye Houli. Preparation and Electrochemical Properties of Small Flake Expanded Graphite[J]. Multipurpose Utilization of Mineral Resources, 2022, (2): 154-157. doi: 10.3969/j.issn.1000-6532.2022.02.028

Preparation and Electrochemical Properties of Small Flake Expanded Graphite

1.
School of Materials and Chemistry, China University of Geosciences, Wuhan, Hubei, China
2.
Minbei Geological Brigade, Nanping, Fujian, China

More Information

Corresponding author: Li Zhen, zhenli@cug.edu.cn

Received Date: 25 April 2021

Publish Date: 25 April 2022

Abstract

Abstract

In this paper, expanded graphite was prepared by chemical oxidation system with hydrogen peroxide as oxidant and concentrated sulfuric acid as intercalation agent. Expanded graphite was obtained by microwave expansion. The effects of the amount of hydrogen peroxide and concentrated sulfuric acid on the morphology and specific surface area of expanded graphite were systematically studied. It was found that the expanded graphite retained the structural characteristics of natural small flake graphite and had wormlike surface morphology, The maximum expansion volume was 291.39 ml/g and the specific surface area was 55.62 m²/g. Small flake expanded graphite was used as anode material of lithium ion battery to assemble button battery and its electrochemical performance was tested which showed good lithium removal/intercalation capacity and good cycling performance.
- Expanded graphite /
- Chemical oxidation /
- Expansion volume /
- Specific surface area /
- Anode material

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References

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