This progress report reviews the most recent discoveries regarding Li–O2chemistry during each discharge and charge process.

No abstract

A multi-redox phenazine molecule (5,10-dihydro-5,10-dimethyl phenazine or DMPZ) is used as a positive electrode material for redox flow batteries to boost energy density. Its redox mechanism and chemical stability are investigated. The marked color change during redox reaction can be utilized for the estimation of the state of charge.

No abstract