Resonant inelastic X-ray scattering measurements suggest that the oxidized oxygen species in high-energy Li-rich oxide cathodes are trapped molecular O2, which is also observed in O-redox-inactive materials. This suggests that resonant X-ray inelastic scattering measurements generate these species, and molecular O2 is not responsible for voltage hysteresis and decay.
- Xu Gao
- Biao Li
- Jean-Marie Tarascon