Metalloid‐Cluster Ligands Enabling Stable and Active FeN₄‐Te_n Motifs for the Oxygen Reduction Reaction

Abstract

catalysts shown in Figure S18, Supporting Information, indicate that Te clusters remain stable during the electrocatalytic ORR reaction. These results demonstrate that FeN 4 -Te n may be competitive in various related electrochemical devices.

Construction of Co4 Atomic Clusters to Enable Fe−N4 Motifs with Highly Active and Durable Oxygen Reduction Performance

“…The prominent peaks at ≈25° and ≈43° in the XRD patterns were corresponding to the (002) and (101) facets of the pyrolyzed graphitic carbon, respectively, [3] which was further affirmed by the G‐band peaks at ≈1590 cm −1 in the Raman spectrum of Co 4 /Fe 1 @NC (Figure S16). It should be noted that no Co‐related metal peaks were observed in the XRD pattern of Co 4 /Fe 1 @NC, indicating the extremely small size of Co 4 ACs species, as also demonstrated in the previously reported literatures [9c, 17] . Interestingly, it was found that much richer pores were observed when the content of Co 4 MCs was gradually increased during the synthesis of Co 4 @NC (Figure S17a–c), which was probably caused by the Cl etching (from the ligands of Co 4 MCs) during the pyrolysis.…”

Promoting Oxygen Reduction Reaction on Atomically Dispersed Fe Sites via Establishing Hydrogen Bonding with the Neighboring P Atoms

“…[ 23 ] Specifically, a shoulder peak at a larger bond distance (≈1.87 Å) originated from the Fe–P bonds, can be explicitly discriminated for Fe,P‐DAS@MPC. [ 4b,22a,24 ] Fe–Fe peaks at ≈2.18 and 2.56 Å observed in Fe foil and FeO are absent in Fe,P‐DAS@MPC, corroborating no Fe‐based clusters/nanoparticles are generated. Wavelet transformed (WT) EXAFS were then used to discern the contributions of each scattering pathway in both k and R spaces.…”

Design of Fe/Ni-doped N/S-rich carbon with advanced bifunctional electrocatalysis for Zn–air batteries

“…5f). [53][54][55][56][57][58][59][60][61][62][63][64] Long-term stability is directly associated with the practicability and effectiveness of the ZABs. The rechargeability and long-term cycling stability of ZABs were investigated to sustain 120 h (450 cycles) in 5 mA cm −2 (Fig.…”