Open Access

ARTICLE

Plasma Surface Modification of Li₂TiSiO₅ Anode for Lithium-Ion Batteries

Shangqi Sun^1,2,3,*, Lingchao Xiao³, Qifeng Qian³, Yunfeng Deng¹

1 School of Materials Science and Engineering, Tianjin University, Tianjin, 300072, China
2 School of Mechanical Engineering and Rail Transit, Changzhou University, Changzhou, 213164, China
3 Zhejiang Sunoren Solar Technology Co., Ltd., Haining, 314400, China

* Corresponding Author: Shangqi Sun. Email:

Energy Engineering 2024, 121(10), 2769-2776. https://doi.org/10.32604/ee.2024.052680

Received 11 April 2024; Accepted 12 July 2024; Issue published 11 September 2024

Abstract

Solving intrinsic structural problems such as low conductivity is the main challenge to promote the commercial application of Li₂TiSiO₅. In this study, Li₂TiSiO₅ is synthesized by the sol-gel method, and the surface modification of Li₂TiSiO₅ is carried out at different temperatures using low-temperature plasma to enhance its lithium storage performance. The morphological structure and electrochemical tests demonstrate that plasma treatment can improve the degree of agglomeration. The peak position of the plasma-treated Li₂TiSiO₅ is shifted to a lower angle, and the shift angle increases with increasing sputtering power. Li₂TiSiO₅ after 300 W bombardment shows excellent capacity (144.7 mA·hg⁻¹ after 500 cycles at 0.1 Ag⁻¹) and rate performance (140 mA·hg⁻¹ at 5 Ag⁻¹). Electrochemical analysis indicates that excellent electrochemical performance is attributed to the enhancement of electronic and ionic conductivity by plasma bombardment.

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Keywords

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