AI Article Synopsis
- Spinel oxides are being explored as effective cathode materials for photo-rechargeable batteries, but LiMnMO (with M = Mn) degrades quickly during UV-visible light exposure during charge/discharge cycles.
- The study tests various spinel-oxide materials by changing the metal composition (M = Fe, Co, Ni, Zn) to enhance photocharging performance in a concentrated aqueous electrolyte.
- LiMnFeO shows significantly better discharge capacity and stability compared to LiMnO after long-term photocharging, highlighting important design principles for improving spinel-oxide cathodes in these batteries.
Article Abstract
Spinel oxides are promising for high-potential cathode materials of photo-rechargeable batteries. However, LiMnMO (M = Mn) shows a rapid degradation during charge/discharge under the illumination of UV-visible light. Here, we investigate various spinel-oxide materials by modifying the composition (M = Fe, Co, Ni, Zn) to demonstrate photocharging in a water-in-salt aqueous electrolyte. LiMnFeO exhibited a substantially higher discharge capacity compared to that of LiMnO after long-term photocharging owing to enhanced stability under illumination. This work provides fundamental design guidelines of spinel-oxide cathode materials for the development of photo-rechargeable batteries.
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| http://dx.doi.org/10.1039/d3cc01902k | DOI Listing |
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