Photo-assisted enhancement of lithium-ion battery performance with a LiFePO4/TiO2 composite cathode

被引：7

作者：

Cui, Can ^{[1
]}

Wang, Xiying ^{[1
]}

Zhu, Hongzheng ^{[1
]}

Jin, Yishu ^{[1
]}

Li, Yiheng ^{[1
]}

Pang, Beili ^{[1
]}

Shang, Mingwei ^{[2
]}

Dong, Hongzhou ^{[1
]}

Yu, Liyan ^{[1
]}

Dong, Lifeng ^{[1
,3
]}

机构：

[1] Qingdao Univ Sci & Technol, Coll Mat Sci & Engn, Qingdao 266042, Peoples R China

[2] Wuxi Zero One Future New Mat Res Inst Co, Wuxi 214000, Peoples R China

[3] Hamline Univ, Dept Phys, St Paul, MN 55104 USA

来源：

CERAMICS INTERNATIONAL | 2024年 / 50卷 / 07期

基金：

中国博士后科学基金; 中国国家自然科学基金;

关键词：

Lithium-ion batteries; LiFePO4; TiO2; Photo-cathode; Photo-assisted battery; CHALLENGES; ENERGY;

D O I：

10.1016/j.ceramint.2024.01.029

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The development of photo-assisted lithium-ion batteries (P-LIBs) holds immense promise for enhancing battery performance and enabling self-charging capabilities. However, the realization of these transformative devices hinges on the creation of novel photoelectrodes with exceptional light absorption and electrochemical properties. In this study, we introduce a composite photocathode composed of TiO2 and LiFePO4, demonstrating remarkable dual functionality for light-to-electricity conversion and energy storage. Comparative analysis reveals substantial improvements in the charge/discharge capacity of P-LIBs under sunlight, with enhancements of 6.6 % and 4.6 % at a 0.5 C rate. Our findings attribute these performance gains to rapid Li+ conduction, facilitating complete valence state transitions between Fe2+ and Fe3+ under sunlight conditions. This work paves the way for significant advancements in photoelectrode design for P-LIBs.

引用

页码：11291 / 11297

页数：7

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