3D-ordered macroporous N-doped carbon encapsulating Fe-N alloy derived from a single-source metal-organic framework for superior oxygen reduction reaction

Metal-coordinated porous polydopamine nanospheres derived Fe 3N-FeCo encapsulated N-doped carbon as a highly efficient electrocatalyst for oxygen reduction reaction

“…However, the inevitable aggregation of FeN3 during the reaction can obviously decrease its activity and stability. To further optimize the ORR performance of Fe3N-C, investigators have developed an in-situ nitridation method with NH3 at high temperature to form small Fe3N nanoparticles [12,13]. For another, the morphology and porosity engineering of carbon matrix is also beneficial to the ORR performance of Fe3N-C. For example, by using chitosan and K3[Fe(CN)6] as raw materials, the Fe3N@N-C catalyst was prepared by a hydrogel-bridged nitridation method, which displayed positive half-wave potential toward ORR over Pt/C [14].…”

A Hybrid of the Fe4N–Fe Heterojunction Supported on N-Doped Carbon Nanobelts and Ketjen Black Carbon as a Robust High-Performance Electrocatalyst

“…29 The iron nitrides are usually prepared via the thermal nitridation of iron alloys under a NH 3 atmosphere; the harsh conditions for gaining iron nitrides may be a critical factor that hinders their broad investigation. 28,38 Consequently, the exploration of facile and easily commercial methods for obtaining iron nitrides will inevitably boost the studies on the extensive utility of iron nitrides in energy conversion devices.…”

“…While the FSACs with respect to ORR have recently attracted extensive interest, iron nitrides such as N austenites have been undeservedly neglected. Some studies − have certified that iron nitrides also deliver good excellent electrochemical activities with respect to ORR due to their distinct electronic structures. Additionally, iron nitrides exhibit high corrosion resistance with respect to elemental iron and a nearly metallic nature with high electroconductivities.…”

“…Among iron nitrides, Fe 2 N- and Fe 3 N-based catalysts have been attracting attention sparked by their activities being analogous to those of the commercial PBMs; − however, studies of the Fe 4 N-based catalysts with respect to ORR have rarely been documented . The iron nitrides are usually prepared via the thermal nitridation of iron alloys under a NH 3 atmosphere; the harsh conditions for gaining iron nitrides may be a critical factor that hinders their broad investigation. , Consequently, the exploration of facile and easily commercial methods for obtaining iron nitrides will inevitably boost the studies on the extensive utility of iron nitrides in energy conversion devices.…”

Biomass Waste‐Derived Electrocatalyst Constructed with g‐C3N4 as a Multifunctional Template for Efficient Oxygen Reduction Reaction

“…[3][4][5] At present, platinum (Pt)-based materials are recognized as electrocatalysts with the highest ORR activity, [6][7][8][9][10] but the high cost caused by the low natural abundance severely restricts the large-scale commercial production and use of such electrocatalysts. [11][12][13] Meanwhile, Pt-based electrocatalysts has poor long-term stability because it is prone to agglomerate and deactivation, especially in the presence of methanol. Thus, the development of more economical and stable alternatives to Pt-based electrocatalysts without compromising the activity have become an emerging theme in the energy and environmental fields.…”