Zinc/graphitic carbon nitride co-mediated dual-template synthesis of densely populated Fe–N_x-embedded 2D carbon nanosheets towards oxygen reduction reactions for Zn–air batteries

Abstract

Densely populated single-atom Fe–Nx-embedded carbon nanosheets (SAs-Fe/N-CNSs) synthesized by a Zn/g-C3N4-mediated dual-template strategy with excellent performance on ORRs and Zn–air batteries.

Iron carbide nanoparticles supported on an N-doped carbon porous framework as a bifunctional material for electrocatalytic oxygen reduction and supercapacitors

“…30,31 In addition, this result agrees with previous studies that the an appropriate amount of NaCl along with N-doping promotes the surface structural defects, which are considered as effective anchoring sites for trapping metal atoms to generate active sites. [32][33][34] Thus, the presence of disordered carbon sites on the surface of NaCl-assisted pyrolyzed samples is conducive to boosting the ORR performance. 35,36 The porosities of Fe 3 C/PNCF, Fe 3 C/NC, and Fe 3 C/PNC are further confirmed by the N 2 adsorption-desorption results shown in Fig.…”

Quantum chemical studies of transition metal single-atom catalysts: exploration of catalytic descriptors

“…[6][7][8][9][10] Among others, transition metal (typically referring to Fe, Co, and Ni) single-atom catalysts (TM-SACs) have drawn increasing intense attention due to their high atom utilization and outstanding catalytic activity. [11][12][13][14][15] It is widely recognized that the catalytic performance of TM-SAC is strongly related to the spin state of the single metal center. [16][17][18][19][20] Thus, the rational control of spin states on TMs is extremely important for achieving high catalytic performance.…”

“…6–10 Among others, transition metal (typically referring to Fe, Co, and Ni) single-atom catalysts (TM-SACs) have drawn increasing intense attention due to their high atom utilization and outstanding catalytic activity. 11–15…”