Fe/Co/N–C/graphene derived from Fe/ZIF-67/graphene oxide three dimensional frameworks as a remarkably efficient and stable catalyst for the oxygen reduction reaction

Abstract

Fe/Co/N–C/graphene was facilely and successfully prepared by a calcination process, which has remarkable electrocatalytic ORR activity in alkali solutions and also displays an exceptional stability for the ORR and methanol tolerance.

Three-dimensional hierarchical flower-like bimetallic–organic materialsin situgrown on carbon cloth and doped with sulfur as an air cathode in a microbial fuel cell

“…3(e), the N 2 adsorption–desorption isotherms of all three materials belong to the type-IV isotherm with an obvious H3-type hysteresis loop, indicating a mesopore-dominant structure. 36 In Fig. 3(f), the three materials contain a large number of mesopores according to the desorption curves and the corresponding specific pore size distribution analyzed by the Barrett–Joyner–Halenda (BJH) equation.…”

Exploiting Asymmetric Co States in a Co-N-C Catalyst for an Efficient Oxygen Reduction Reaction

“…In fact, whether exposed Co-NPs are profitable to the enhanced catalytic activity still needs to be clarified. Metal-organic framework (MOF)-derived nitrogen-doped carbon composites have recently been widely taken as ORR catalysts [8,[12][13][14][15][16]. The unique structural advantages are conducive to supporting metal sites with different forms on a support, which can be used as model catalysts to pinpoint the mechanism of different metal components in a catalytic system.…”