An Fe–N–C hybrid catalyst is successfully fabricated by a simple one-step pyrolysis of bimetallic Zn/Fe-ZIFs. The introduction of iron into Zn-based ZIF-7 to form the bimetallic MOF precursors could catalyze the in situ formation of CNTs crossed porous carbons, forming a 3D hybrid network, which exhibits excellent ORR activity.
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Liu et al. (2016) studied this question.
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