Metal–Organic‐Framework‐Derived Dual Metal‐ and Nitrogen‐Doped Carbon as Efficient and Robust Oxygen Reduction Reaction Catalysts for Microbial Fuel Cells

Abstract

A new class of dual metal and N doped carbon catalysts with well‐defined porous structure derived from metal–organic frameworks (MOFs) has been developed as a high‐performance electrocatalyst for oxygen reduction reaction (ORR). Furthermore, the microbial fuel cell (MFC) device based on the as‐prepared Ni/Co and N codoped carbon as air cathode catalyst achieves a maximum power density of 4335.6 mW m−2 and excellent durability.

Rational Design of Metal‐Organic Framework Derived Hollow NiCo2O4 Arrays for Flexible Supercapacitor and Electrocatalysis

“…In addition, most of the prementioned MOF-derived hollow structures are in powder forms, which include the unwanted polymer binder and carbon addictive in electrochemical reaction. [28][29][30][31][32][33] Herein, we report a novel approach to fabricate hollow and porous NiCo 2 O 4 nanowall arrays on flexible carbon cloth current collector. [23][24][25][26][27] As such, it would be of great interest to develop 2D MOFs and MOFs derived arrayed structures on flexible current collector, which may offer unique physical and chemical properties with larger surface area and more accessible active sites.…”

Porous Hollow‐Structured LaNiO3 Stabilized N,S‐Codoped Graphene as an Active Electrocatalyst for Oxygen Reduction Reaction

“…Another issue was found that the perovskite oxides have high tendency to agglomerate for the duration of the synthesis, which also causes undesirable influence in the catalytic activities and stability . For solving above mentioned issue, it is believed that the hybridization of catalysts with a suitable supporting material can be an ideal solution because supporting nanomaterial can well disperse and effectively attach catalysts as well as prevent their agglomeration and dissolution possibility, and thus improve catalytic activity and stability of final material . Among different candidates, 2D graphene (Gr) sheets have been recognized as an excellent supporting material, due to their high mechanical properties, high conductivity, and high electrochemical activity .…”

Nitrogen/Cobalt Co‐doped Mesoporous Carbon Microspheres Derived from Amorphous Metal‐Organic Frameworks as a Catalyst for the Oxygen Reduction Reaction in Both Alkaline and Acidic Electrolytes

“…[19,31,32] Moreover, this support synthesis route also suffers from uncontrolled catalyst morphologies and compositions. [35][36][37] Among them, MOFs have several advantages for the fabrication of Co/ NÀ C catalysts because MOFs are usually prepared by linking of inorganic metal ions/clusters with organic ligands in the solvothermal or crystal breeding methods. [35][36][37] Among them, MOFs have several advantages for the fabrication of Co/ NÀ C catalysts because MOFs are usually prepared by linking of inorganic metal ions/clusters with organic ligands in the solvothermal or crystal breeding methods.…”

“…[32][33][34] To this end, recent researches are focused on synthesizing Co/NÀ C catalysts from a single precursor, such as polymeric Co complex and Co-based metal organic frameworks (MOFs). [35,[38][39][40] In this way, various N-containing ligands and Co ions/clusters can be applied to prepare Co-MOFs and then the Co/NÀ C catalysts, in which the N-containing ligands in MOFs serve as both C and N source to carbonize into N-doped carbon matrices, while Co ions are converted into Co oxides, CoÀ N x species, and metallic Co particles. [35,[38][39][40] In this way, various N-containing ligands and Co ions/clusters can be applied to prepare Co-MOFs and then the Co/NÀ C catalysts, in which the N-containing ligands in MOFs serve as both C and N source to carbonize into N-doped carbon matrices, while Co ions are converted into Co oxides, CoÀ N x species, and metallic Co particles.…”

“…[35,[38][39][40] In this way, various N-containing ligands and Co ions/clusters can be applied to prepare Co-MOFs and then the Co/NÀ C catalysts, in which the N-containing ligands in MOFs serve as both C and N source to carbonize into N-doped carbon matrices, while Co ions are converted into Co oxides, CoÀ N x species, and metallic Co particles. [35,41,42] Although a variety of Co-based zeolitic imidazolate frameworks (Co-ZIFs, a subfamily of MOFs) and their derived Co/NÀ C catalysts have been extensively studied, most of the researches were focused on crystalline Co-ZIFs. [35,41,42] Although a variety of Co-based zeolitic imidazolate frameworks (Co-ZIFs, a subfamily of MOFs) and their derived Co/NÀ C catalysts have been extensively studied, most of the researches were focused on crystalline Co-ZIFs.…”