Effect of Pitch Carbon Coating on Electrochemical Properties of Spherical Graphite

LIU Huailiang; ZHANG Lingyan; QIU Yangshuai; DING Dafa; YIN Weifei

doi:10.3969/j.issn.1000-6532.2024.01.024

2024 No. 1

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Article navigation > Multipurpose Utilization of Mineral Resources > 2024 > 45(1): 181-186

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LIU Huailiang, ZHANG Lingyan, QIU Yangshuai, DING Dafa, YIN Weifei. Effect of Pitch Carbon Coating on Electrochemical Properties of Spherical Graphite[J]. Multipurpose Utilization of Mineral Resources, 2024, 45(1): 181-186. doi: 10.3969/j.issn.1000-6532.2024.01.024

Citation:

LIU Huailiang, ZHANG Lingyan, QIU Yangshuai, DING Dafa, YIN Weifei. Effect of Pitch Carbon Coating on Electrochemical Properties of Spherical Graphite[J]. Multipurpose Utilization of Mineral Resources, 2024, 45(1): 181-186. doi: 10.3969/j.issn.1000-6532.2024.01.024

Effect of Pitch Carbon Coating on Electrochemical Properties of Spherical Graphite

1.
School of Resourcesand Environmental Engineering, Wuhan UniversityofTechnology, Key Laboratory of Mineral Resources Processing and Environment, Wuhan 430070, Hubei, China

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Corresponding author: QIU Yangshuai, qiuyangshuai@whut.edu.cn

Received Date: 16 July 2021

Publish Date: 25 February 2024

Abstract

Abstract

This is an article in the field of mineral materials. The effect of pitch softening point on the structure and electrochemical performance of pitch carbonized spherical crystalline graphite anode materials were systematically investigated. The results show that a layer of amorphous carbon is formed on the surface of graphite after carbonization of pitch, which improves the surface morphology of spherical crystalline graphite, but does not change its crystal structure; The composites with high pitch softening point have better electrochemical performance and cycling stability. After 280 cycles of temperature, the capacity of the composites is not significantly reduced after 30 cycles of charge discharge, and the capacity retention rate is 85.07%, which is 4.74% higher than that of the untreated ones.
- Mineral materials /
- Lithium ion battery /
- Pitch /
- Spherical crystalline graphite /
- Electrochemical performance

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References

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