Design and synthesis of Co–N–C porous catalyst derived from metal organic complexes for highly effective ORR

Abstract

In this work, we reported a novel and slack rose-like metal organic precursor designed by coordinating p-phenylenediamine with cobalt ion. After subsequent pyrolysis and acid etching process, the as-prepared Co-N-C catalyst delivered a superior catalytic activity and long-term durability. Further applied in the Zn-air battery, it also displayed a comparable performance with 20% Pt/C.

Recent Advances in Metal‐Organic Framework Derivatives as Oxygen Catalysts for Zinc‐Air Batteries

“…The combination of Co 4 N with high OER activity and Co−N−C with good ORR activity showed decent performance in rechargeable Zn‐air batteries. Following Meng's work, some other publication also reported the generation of transition metal nitrides (e. g., Fe 3 N, FeN x , CoN x ) or transition metal carbides (e. g., Fe 3 C, Co 3 C) from MOF precursors after high‐temperature calcination . However, due to the complexity of the composition, further investigation into the role of these transition metal compounds on oxygen catalysis and on rechargeable Zn–air batteries is still required.…”

“…In this regard, hollow and core/shell structures,,,, 1D thin rods/bars,,,,,,,,,, 2D thin sheets,,,,,,, are shown to be favorable. In addition, highly interconnected 3D structures,,,, are also beneficial to improving the long‐range electronic conductivity of the cathode.…”

Rational Design of Single Atomic Co in CoNx Moieties on Graphene Matrix as an Ultra‐Highly Efficient Active Site for Oxygen Reduction Reaction

“…The electrocatalytic performance of the decorated graphene should arise from the high specific surface area. However, many studies reported that the metal aggregation during high‐temperature pyrolysis processes probably decreases electrocatalytic activity . Therefore, graphene with highly‐dispersed CoN x species could be an ideal electrocatalyst if metal nanoparticles are prevented from aggregating during carbonization …”

Sponge-like N-doped carbon materials with Co-based nanoparticles derived from biomass as highly efficient electrocatalysts for the oxygen reduction reaction in alkaline media

“…The performance enhancement of the abovementioned electrocatalysts is usually attributed to the inclusion of Fe or Co nanoparticles as well as N species such as pyridinic N, pyrrolic N, graphitic N and Fe/Co-N x complex. [20][21][22][23][24][25][26][27][28][29][30] Nonetheless, the cost of SCM in these electrocatalysts is still relatively high and limits the practical application.…”