MOF-Based Separator in an Li–O₂ Battery: An Effective Strategy to Restrain the Shuttling of Dual Redox Mediators

Tuning the electrochemical formation/decomposition of Li2O2 from the circumscribed surface pathways to the solution ones, the dual redox mediator (RM) strategy largely promotes the discharge capacity and reduces the charge overpotential in aprotic Li–O2 batteries, revealing a promising strategy to realize anticipated high specific energy cycling. However, both RM-induced Li degradation and electron shuttling between the cathode and anode become...