In article number 1704898, Tao Qian, Chenglin Yan, and co-workers report a highly-efficient hybrid electrode with metal–organic-framework-derived holey nanocrystals grown in situ on the graphene framework for direct use in zinc–air batteries, showing outstanding electrocatalytic activities for oxygen reactions. Facilitated chemisorption of oxygen molecules and oxygen-containing intermediates on the heteroatom-doped carbon is observed by in situ characterization during battery operation.
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