General synthesis of zeolitic imidazolate framework-derived planar-N-doped porous carbon nanosheets for efficient oxygen reduction

A general strategy is developed for the synthesis of ZIF-derived planar-N-doped porous carbon nanosheets with tunable composition and microstructure via the intercalation of ZIF into layer-structured template, followed by nanospace-confined carbonization and acidic etching. Benefited from unique structure, they exhibit superior electrochemical performance as electrocatalysts for oxygen reduction reactions.258