Heteroatom doped M–N–C single-atom catalysts for high-efficiency oxygen reduction reaction: regulation of coordination configurations

Abstract

Oxygen reduction reaction (ORR) is the core reaction at the cathode of fuel cell and metal-air battery. However, the sluggish ORR kinetics leads to insufficient output performance of these energy...

F‐Doped Co−N−C Catalysts for Enhancing the Oxygen Reduction Reaction in Zn‐Air Batteries

“…Previous studies have shown that the introduction of heteroatoms such as boron, [27] sulfur, [28,29] and phosphorus [30,31] to the catalyst can further enhance its ORR activity by inducing charge redistribution and spin density changes [32] . Recently, Wang et al.…”

“…[23][24][25][26] Previous studies have shown that the introduction of heteroatoms such as boron, [27] sulfur, [28,29] and phosphorus [30,31] to the catalyst can further enhance its ORR activity by inducing charge redistribution and spin density changes. [32] Recently, Wang et al prepared a bamboo-like Fe, N, and B co-doped carbon nanotube catalyst (FeNB/C) using boron-containing ionic liquids (ILs) as dopant. The onset potential (E onset ) and halfwave potential (E 1/2 ) of FeNB/C toward ORR in alkaline electrolyte approached 0.92 and 0.82 V vs. RHE, respectively.…”

DFT study on a fluorine-functionalized nitrogen- and boron-doped triangulene as an electrocatalyst for the oxygen reduction reaction

“…As a result, research on nonprecious and abundant catalyst materials has increased. [12][13][14] Therefore, we aim to prepare an alternative catalyst material that is lowcost, readily available and provides high catalytic efficiency for the ORR. [15][16][17] From previous density functional theory (DFT) studies, we observed that catalysts such as metal oxides, graphene quantum dots, 18 transition metals such as iron (Fe) [19][20][21] and cobalt (Co) 22,23 and substituted graphene derivatives 24 demonstrate enhanced electrocatalytic activity.…”

“…As a result, research on nonprecious and abundant catalyst materials has increased. 12–14 Therefore, we aim to prepare an alternative catalyst material that is low-cost, readily available and provides high catalytic efficiency for the ORR. 15–17…”

Effect of oxygen coordination on the electrocatalytic nitrogen fixation of a vanadium single-atom catalyst embedded in graphene

“…31 In addition to the N atom, other hetero-elements, e.g., B, O, S, P, and halogens, have been used to coordinate with metal atoms for catalytic reactions. [31][32][33][34][35][36][37][38] In 2020, Zhang et al synthesized a Fe-based SAC by embedding Fe atom in the O-doped graphene (FeO 4 /G SAC) and further identified its outstanding catalytic performance for NRR. 39 Very recently, Han et al successfully synthesized a series of SACs with various metals embedded in O-doped graphene, which also contains VO 4 /G.…”