metal-oxygen covalencyneutraloxygen evolution reactionOxygen evolution reaction (OER) is crucial for hydrogen production as well as other energy storage technologies. CoFe-layered double hydroxide (CoFe-OH) has been widely considered as one of the most efficient electrocatalysts for OER in basic aqueous...
Moreover, it can also be observed that O K-edge sXAS spectra exhibit the increased intensity at OER conditions for all the catalysts (Fig. 3e), indicating the enhanced metal–oxygen covalency to promote the charge transfer between metal center and oxygen atoms during OER process9,39. In-...
Oxygen evolution reaction (OER) is the core electrode reaction in energy-related technologies, such as electrolytic water, electrocatalytic carbon dioxide reduction, rechargeable metal-air batteries, and renewable fuel cells. Development of well-stocked, cost-effective, and high-performance OER electroca...
Ultrathin Metal Silicate Hydroxide Nanosheets with Moderate Metal–Oxygen Covalency Enables Efficient Oxygen Evolution Energy Environ. Mater. (2021), 10.1002/eem2.12155 Published online December 13, 2021 Google Scholar 52 Z. Li, R. Ye, R. Feng, Y. Kang, X. Zhu, J.M. Tour, Z. Fang Graphen...
6h). As the thickness of ZnO sheet increases, the covalency of Zn−O bonds is greater (as indicated by the larger Zn−O bond order shown in Fig. 6e) and the activity of O atoms is enhanced, consistent with the regulation found for the active O atoms on transition metal oxide ...
This study delves into the intricate interactions between surface‐near species, OH and H2O, on electrodes in electrochemical interfaces. These species are an inevitable part of many electrocatalytic energy conversion reactions such as the oxygen reduction reaction. In our modeling, we utilize ...
Besides, the strengthened metal–oxygen covalency of HEO may alter the OER mechanism from AEM to LOM, which can provide lower theoretical potential [19], [20]. To optimize the local electron structure and surface character of the catalyst, anion doping is also an effective strategy, which can...
oxidation during OER.Here,we compare the participation of lattice oxygen oxidation in the OER among LaCoO3, La05Sr05CoO3−δ, Pr05Ba05CoO3−δ (that is,double perovskite PrBaCo2O5+δ) and SrCoO3−δ It is of particular interest to examine the role of metal–oxygen covalency on the...
Anodic oxygen evolution reaction (OER) is recognized as kinetic bottleneck in water electrolysis. Transition metal sites with high valence states can accelerate the reaction kinetics to offer highly intrinsic activity, but suffer from thermodynamic forma
N. Kaltsoyannis, "Covalency in metal complexes of 1,4-diazabutadiene (dab). A density functional investigation of the electronic structures of M(dab).sub.2 ! (M=Li, Ga or Co) and Th(NH.sub.3)(NH.sub.2).sub.3 (dab)!", J. Chem. Soc., Dalton Transactions, 8, 1583-1589 (19...