Applied Energy, Journal Year: 2025, Volume and Issue: 391, P. 125925 - 125925
Published: April 13, 2025
Language: Английский
Energy & Environmental Science, Journal Year: 2023, Volume and Issue: 16(4), P. 1685 - 1696
Published: Jan. 1, 2023
In this work, we propose a unique reaction mechanism that the Fe site OOH serves as auxiliary to accelerate formation of Co active species, hence accelerating rate-determining step OER.
Language: Английский
Citations
142
Advanced Science, Journal Year: 2024, Volume and Issue: 11(26)
Published: April 30, 2024
Abstract The design of high‐entropy single‐atom catalysts (HESAC) with 5.2 times higher entropy compared to (SAC) is proposed, by using four different metals (FeCoNiRu‐HESAC) for oxygen reduction reaction (ORR). Fe active sites intermetallic distances 6.1 Å exhibit a low ORR overpotential 0.44 V, which originates from weakening the adsorption OH intermediates. Based on density functional theory (DFT) findings, FeCoNiRu‐HESAC nitrogen‐doped sample were synthesized. atomic structures are confirmed X‐ray photoelectron spectroscopy (XPS), absorption (XAS), and scanning transmission electron microscopy (STEM). predicted high catalytic activity experimentally verified, finding that has overpotentials 0.41 0.37 V Tafel slopes 101 210 mVdec −1 at current 1 mA cm −2 kinetic densities 8.2 5.3 , respectively, in acidic alkaline electrolytes. These results comparable Pt/C. used Zinc–air battery applications an open circuit potential 1.39 power 0.16 W . Therefore, strategy guided DFT provided rational HESAC can be replaced high‐cost Pt toward beyond.
Language: Английский
Citations
31
Nano Energy, Journal Year: 2024, Volume and Issue: 126, P. 109634 - 109634
Published: April 21, 2024
Language: Английский
Citations
28
Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(36)
Published: March 18, 2024
Abstract Recently, a diverse array of novel metal‐nitrogen‐carbon (M‐N‐C) single‐atom catalysts (SACs) have rapidly evolve, particularly in the realm oxygen reduction reaction (ORR). Despite plethora proposed design and improvement strategies for SACs, comprehensive review systematically compiling components M‐N‐C from unified perspective is notably absent. For first time, thorough examination each component conducted, focusing on entropy increase active sites SACs. single M‐N 4 whole system, an implies elevated degree disorder chaos. Broadly, entropy‐increasing modification M (single mental sites) guest groups entails augmentation chaos, with most effective co‐catalytic synergy achieved by establishing multiple through “cocktail effect”. Concerning N (nitrogen other heteroatoms) C (carbon supports), induces heightened disorder, symmetry breaking more likely to drive toward adsorbing molecules attain equilibrium symmetric structure. All these innovative led remarkable ORR activity stability offer guiding criterion future preparation
Language: Английский
Citations
27
Chemical Science, Journal Year: 2024, Volume and Issue: 15(36), P. 14585 - 14607
Published: Jan. 1, 2024
The development of high-efficiency atomic-level catalysts for energy-conversion and -storage technologies is crucial to address energy shortages. spin states diatomic (DACs) are closely tied their catalytic activity. Adjusting the DACs' active centers can directly modify occupancy d-orbitals, thereby influencing bonding strength between metal sites intermediates as well transfer during electro reactions. Herein, we discuss various techniques characterizing atomic strategies modulating center states. Next, outline recent progress in study effects DACs oxygen reduction reaction (ORR), evolution (OER), hydrogen (HER), electrocatalytic nitrogen/nitrate (eNRR/NO
Language: Английский
Citations
27
Nano-Micro Letters, Journal Year: 2024, Volume and Issue: 16(1)
Published: Feb. 29, 2024
Abstract The exploration of sustainable energy utilization requires the implementation advanced electrochemical devices for efficient conversion and storage, which are enabled by usage cost-effective, high-performance electrocatalysts. Currently, heterogeneous atomically dispersed catalysts considered as potential candidates a wide range applications. Compared to conventional catalysts, metal atoms in carbon-based have more unsaturated coordination sites, quantum size effect, strong metal–support interactions, resulting exceptional catalytic activity. Of these, dual-atomic (DACs) attracted extensive attention due additional synergistic effect between two adjacent atoms. DACs advantages full active site exposure, high selectivity, theoretical 100% atom utilization, ability break scaling relationship adsorption free on sites. In this review, we summarize recent research advancement DACs, includes (1) comprehensive understanding synergy atomic pairs; (2) synthesis DACs; (3) characterization methods, especially aberration-corrected scanning transmission electron microscopy synchrotron spectroscopy; (4) energy-related last part focuses great catalysis small molecules, such oxygen reduction reaction, CO 2 hydrogen evolution N reaction. future challenges opportunities also raised prospective section.
Language: Английский
Citations
25
Chemical Society Reviews, Journal Year: 2024, Volume and Issue: 53(14), P. 7392 - 7425
Published: Jan. 1, 2024
Descriptors play a crucial role in electrocatalysis as they can provide valuable insights into the electrochemical performance of energy conversion and storage processes. They allow for understanding different catalytic activities enable prediction better catalysts without relying on time-consuming trial-and-error approaches. Hence, this comprehensive review focuses highlighting significant advancements commonly used descriptors critical electrocatalytic reactions. First, fundamental reaction processes key intermediates involved several reactions are summarized. Subsequently, three types classified introduced based catalysts. These include d-band center descriptors, readily accessible intrinsic property spin-related all which contribute to profound behavior. Furthermore, multi-type that collectively determine also Finally, we discuss future envisioning their potential integrate multiple factors, broaden application scopes, synergize with artificial intelligence more efficient catalyst design discovery.
Language: Английский
Citations
18
Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 158951 - 158951
Published: Jan. 1, 2025
Language: Английский
Citations
2
Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 62(27)
Published: May 4, 2023
Dual-atom catalysts (DAC) are deemed as promising electrocatalysts due to the abundant active sites and adjustable electronic structure, but fabrication of well-defined DAC is still full challenges. Herein, bonded Fe dual-atom (Fe2 DAC) with Fe2 N6 C8 O2 configuration were developed through one-step carbonization a preorganized covalent organic framework bimetallic chelation COF). The transition from COF involved dissociation nanoparticles capture atoms by carbon defects. Benefitting optimized d-band center enhanced adsorption OOH* intermediates, exhibited outstanding oxygen reduction activity half-wave potential 0.898 V vs. RHE. This work will guide more even cluster in future.
Language: Английский
Citations
38
Nano Research, Journal Year: 2023, Volume and Issue: 17(5), P. 3794 - 3800
Published: Dec. 2, 2023
Language: Английский
Citations
36