Direct surface modification of high-voltage LiCoO2 cathodes by UV-cured nanothickness poly(ethylene glycol diacrylate) gel polymer electrolytes

- Direct surface modification of high-voltage LCO cathode by UV-cured PEGDA GPE.
- Conformal PEGDA nanocoating layer is formed on LCO surface.
- Preformed architecture of LCO cathode is not disrupted by PEGDA coating layer.
- PEGDA-LCO cathode improves high-voltage cycling performance and thermal stability.
- PEGDA nanocoating layer serves as a new ion-conductive protection film.