V <sub>2</sub> O <sub>5</sub> /CdS Heterostructures for High‐Rate Photo‐Rechargeable Zinc‐Ion Batteries
Photo-rechargeable batteries, capable of simultaneous solar energy harvesting and storage, attract significant research interest as next-generation autonomous power systems. The development of high-efficiency photoactive electrodes is highly desirable for achieving practical performance. Herein, we report V<sub>2</sub>O<sub>5</sub>/CdS composites for photo-rechargeable zinc-ion batteries, which enable efficient light-to-electricity-to-chemical energy conversion through effective separation of photogenerated electron-hole pairs. The photocell can be charged by light without an external power supply, achieving a light conversion efficiency of 0.99%. Notably, under a high current density (4.0 A g<sup>-1</sup>), the capacity increases 24.1% to 301 mA h g<sup>-1</sup> after illumination compared to that in dark conditions. This work provides fundamental insights into the mechanisms enabling high-rate performance in photo-rechargeable zinc-ion batteries.
Authors
- Jiale Fan
- Jiamin Liu (ORCID: https://orcid.org/0000-0001-8270-1131)
- Yu Wang (ORCID: https://orcid.org/0000-0003-3151-0778)
- Guohao Li (ORCID: https://orcid.org/0000-0002-2735-6432)
- Shurui Cong
- Senlin Zhang
- Aidi Fu
- Lei Wang
- Nan Zhang
- Xiuqiang Xie
Institutions
- Hunan University (CN)
- National Institute for Radiological Protection (CN)
Publication Details
- Journal
- Small
- Published
- 2026-01-05
- DOI
- https://doi.org/10.1002/smll.202512983
- Primary Topic
- Advanced battery technologies research
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- National Natural Science Foundation of China
- Hunan University
- Fundamental Research Funds for the Central Universities