Light-induced Li extraction from LiMn2O4/TiO2 in a water-in-salt electrolyte for photo-rechargeable batteries

Photocharging of high-potential spinel LiMn2O4 is demonstrated by using a water-in-salt electrolyte and TiO2 nanoparticles. In a developed half-cell system with an electron acceptor, Li extraction from LiMn2O4 proceeds under the illumination of UV-visible light at an estimated rate of similar to 23 mA g(-1). This work paves the way for high-potential cathode materials in photo-rechargeable batteries.

Automated summary

This study demonstrates the photocharging of high-potential spinel LiMn2O4 using a water-in-salt electrolyte and TiO2 nanoparticles. Under UV-visible light illumination, Li extraction from LiMn2O4 proceeds at an estimated rate of approximately 23 mA g(-1) in a developed half-cell system with an electron acceptor. This work paves the way for high-potential cathode materials in photo-rechargeable batteries.