| Autor: |
Wei, Meng, Zhang, Qiuman, Huang, Lisha, Xue, Zhengtao, Gao, Qiongzhi, Cai, Xin, Zhang, Shengsen, Fang, Yueping, Peng, Feng, Yuan, Teng, Yang, Siyuan |
| Zdroj: |
Nano Letters; September 2024, Vol. 24 Issue: 35 p10827-10833, 7p |
| Abstrakt: |
Herein, Cu-foam-supported CuO nanowire arrays covered with Cu2S nanosheet substrates (Cu/CuO/Cu2S) are adopted as efficient photoelectrodes for photorechargeable lithium-ion batteries (PR-LIBs). The assembled PR-LIB exhibits remarkable solar energy conversion efficiency alongside superior lithium storage capabilities. Without an electrical power supply, the photocharged PR-LIB sustained a discharge process for 63.0 h under a constant current density of 0.05 mA cm–2. The corresponding solar-to-electrical energy conversion efficiency is 4.50%, which is an impressive achievement among recently reported contemporary technologies. Mechanism investigation shows that the Cu/CuO/Cu2S photogenerated carriers augment the extraction and insertion of Li+according to different oxidation and reduction reactions in the charging and discharging reactions. This research delineates a refined model system and proposes innovative directions for developing efficient heterojunction photoelectrodes, significantly propelling the development of PR-LIB technology. |
| Databáze: |
Supplemental Index |
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