Carbon coating, UV irradiation modification of lithium titanate and their electrochemical properties

Li Yunfeng; Wu Chuanbao; Wang Yunwei; Ran Siyu; Zheng Yuqian

doi:10.7513/j.issn.1004-7638.2024.03.010

Volume 45 Issue 3

Jul. 2024

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Li Yunfeng, Wu Chuanbao, Wang Yunwei, Ran Siyu, Zheng Yuqian. Carbon coating, UV irradiation modification of lithium titanate and their electrochemical properties[J]. IRON STEEL VANADIUM TITANIUM, 2024, 45(3): 71-78. doi: 10.7513/j.issn.1004-7638.2024.03.010

Citation:

Li Yunfeng, Wu Chuanbao, Wang Yunwei, Ran Siyu, Zheng Yuqian. Carbon coating, UV irradiation modification of lithium titanate and their electrochemical properties[J]. IRON STEEL VANADIUM TITANIUM, 2024, 45(3): 71-78. doi: 10.7513/j.issn.1004-7638.2024.03.010

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Carbon coating, UV irradiation modification of lithium titanate and their electrochemical properties

doi: 10.7513/j.issn.1004-7638.2024.03.010

1.
School of Vanadium and Titanium, Panzhihua University, Panzhihua 617000, Sichuan,China
2.
Vanadium and Titanium Resource Comprehensive Utilization Key Laboratory of Sichuan Province, Panzhihua 617000, Sichuan,China
3.
School of Biological and Chemical Engineering, Panzhihua University, Panzhihua 617000, Sichuan,China

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Received Date: 2024-02-05
Publish Date: 2024-07-02

Abstract

Abstract

Lithium titanate (Li₄Ti₅O₁₂, abbreviated as LTO) has become an important anode material for lithium-ion batteries due to its structural "zero-strain" property. However, the low electronic conductivity of lithium titanate limits its high-rate performance. In this paper, a light-assisted sol-gel method was proposed to prepare LTO/C anode materials, the effects of different carbon source ratios and light irradiation on the microstructure and electrochemical properties of LTO/C were investigated. Compared with the results of sucrose as the carbon source, the rate performance of the LTO/C with glucose as the carbon source is better due to the higher degree of graphitized carbon coated on the surface of LTO. Under the UV irradiation condition, the reduction of LTO/C particle size makes the discharge specific capacity of UV-irradiated LTO/C higher than that of LTO/C without UV irradiation at different rates. The discharge specific capacity of the LTO/C sample prepared with 20% glucose as carbon source assisted with UV irradiation process reaches 101.5 mAh·g⁻¹ at 10 C.
- lithium titanate,
- anode material,
- UV irradiation,
- carbon coating

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References(20)

References

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