Highly exposed discrete Co atoms anchored in ultrathin porous N, P-codoped carbon nanosheets for efficient oxygen electrocatalysis and rechargeable aqueous/solid-state Zn–air batteries

Abstract

Single atom catalysts (SACs) exhibit desirable catalytic properties in key renewable energy reactions and devices. However, rational design of SACs and boost their performances for oxygen electrocatalysis and rechargeable Zn-Air...

Co2P-Assisted Atomic Co–N4 Active Sites with a Tailored Electronic Structure Enabling Efficient ORR/OER for Rechargeable Zn–Air Batteries

“…In order to further explore the chemical configuration of 44 The peak at 1.8 Å was assigned to Co−P species, implying the presence of Co 2 P nanoparticles. 45 This also proved that Co 2 P adjusted the electronic structure of Co-NC centers. In order to obtain a detailed and accurate coordination situation, the fitted data is shown in Figure 2i and Table S2, and the coordination configuration of S8a) exhibited a positive peak for Co 2 P/Co-NC, revealing its high ORR activity.…”

Recent Developments of Atomically Dispersed Metal Electrocatalysts for Oxygen Reduction Reaction†

“…The obtained Co‐N 3 P site has a dual function of catalytic ORR and oxygen evolution reaction (OER) activities as well as enhanced stability. [ 21 ]…”

“…[ 18 ] Furthermore, the adsorption energy can be optimized to improve the SACs intrinsic activity through coordination configuration modulating, intrinsic defects engineering, and multiple active sites synergies. [ 19‐21 ] Apart from the intrinsic activity, the number of available active sites also seriously affects the catalytic performance. Designing suitable synthetic routes to tune the metal doping process and the morphological structure of the matrix to obtain SACs with high loading or high utilization of active sites are the two mainstream strategies at present.…”

Role of heteroatom-doping in enhancing catalytic activities and the stability of single-atom catalysts for oxygen reduction and oxygen evolution reactions

“…In the current work, only S was considered as the doping element for the TM-N-C catalytic structures. Recently, researches on boosting the catalytic properties by engineering catalytic systems with other p-block element-doped TM-N-C systems are emerging, for example, P-doped Fe-N-C, 53,54 Sidoped Fe-N-C, 55 B-doped Fe-N-C, 56 P-doped Co-N-C, 57,58 O-doped Mn-N-C, 59 and B-doped Ni-N-C. 60 Considering similar valence electron configuration and atomic radius, the intrinsic descriptor of S in the current study is promising for extension to other p-block elements.…”