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Prolonging the lifetime of batteries is a long-term pursuit, and it is also one of the prerequisites for the practical application of batteries. However, this is really challenging for high-energy Li-O2 batteries due to their poor charge efficiency and cathode passivation induced by products accumulation. Here, we demonstrate that overcharging the Li-O2 batteries can facilitate the decomposition of residue products and thus revive the cathode, which allows further operation of Li-O2 batteriesdoi:10.21203/rs.3.rs-823894/v1 fatcat:rlsqrdh7evgf5lc2zxngivbnzu