Hydrogenated V2O5 with Improved Optical and Electrochemical Activities for Photo-Accelerated Lithium-Ion Batteries

被引：4

作者：

Lu, Yinan ^{[1
]}

Andersen, Holly ^{[1
]}

Wu, Ruiqi ^{[2
]}

Ganose, Alex M. ^{[2
]}

Wen, Bo ^{[3
]}

Pujari, Arvind ^{[3
,4
]}

Wang, Tianlei ^{[5
]}

Borowiec, Joanna ^{[5
]}

Parkin, Ivan P. ^{[5
]}

De Volder, Michael ^{[3
]}

Boruah, Buddha Deka ^{[1
]}

机构：

[1] UCL, Inst Mat Discovery, London WC1E 7JE, England

[2] Imperial Coll London, Dept Chem, Mol Sci Res Hub, Wood Lane,White City Campus, London W12 0BZ, England

[3] Univ Cambridge, Inst Mfg, Dept Engn, Cambridge CB3 0FS, England

[4] Univ Cambridge, Dept Phys, Cavendish Lab, Cambridge CB3 0HE, England

[5] UCL, Dept Chem, London WC1H 0AJ, England

来源：

SMALL | 2024年 / 20卷 / 14期

基金：

英国工程与自然科学研究理事会;

关键词：

hydrogenated vanadium pentoxide; lithium-ion batteries; photo-accelerated batteries; photocathodes;

D O I：

10.1002/smll.202308869

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Solar power represents an abundant and readily available source of renewable energy. However, its intermittent nature necessitates external energy storage solutions, which can often be expensive, bulky, and associated with energy conversion losses. This study introduces the concept of a photo-accelerated battery that seamlessly integrates energy harvesting and storage functions within a single device. In this research, a novel approach for crafting photocathodes is presented using hydrogenated vanadium pentoxide (H:V2O5) nanofibers. This method enhances optical activity, electronic conductivity, and ion diffusion rates within photo-accelerated Li-ion batteries. This study findings reveal that H:V2O5 exhibits notable improvements in specific capacity under both dark and illuminated conditions. Furthermore, it demonstrates enhanced diffusion kinetics and charge storage performance when exposed to light, as compared to pristine counterparts. This strategy of defect engineering holds great promise for the development of high-performance photocathodes in future energy storage applications.

引用

页数：9

共 23 条

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