Author Correction: Unified picture of anionic redox in Li/Na-ion batteries.

An amendment to this paper has been published and can be accessed via a link at the top of the paper.

Unified picture of anionic redox in Li/Na-ion batteries.

Anionic redox in Li-rich and Na-rich transition metal oxides (A-rich-TMOs) has emerged as a new paradigm to increase the energy density of rechargeable batteries. Ever since, numerous electrodes delivering extra anionic capacity beyond the theoretical cationic capacity have been reported. Unfortunately, most often the anionic capacity achieved in charge is partly irreversible in discharge.