Energy storage materials, Journal Year: 2025, Volume and Issue: unknown, P. 104157 - 104157
Published: March 1, 2025
Language: Английский
ACS Nano, Journal Year: 2025, Volume and Issue: unknown
Published: Jan. 7, 2025
In atomically thin two-dimensional (2D) materials, grain boundaries (GBs) are ubiquitous, displaying a profound effect on the electronic structure of host lattice. The random configuration atoms within GBs introduces an arbitrary and unpredictable local environment, which may hazard electron transport. Herein, by utilizing Pt single-atom chains with ultimate one-dimensional (1D) feature (width single atom length up to tens nanometers), we realized suture pathway at diversified transition metal dichalcogenides (TMDCs). Theoretical calculations reveal that construction sutures (SAS) prompts emergence states proximal Fermi level, effectively modulating transformation from semiconductivity metallicity. This underscores pivotal role SAS in reconfiguring pathway. Benefiting this, SAS-MoS2 emerges as excellent catalyst, exhibiting overpotential 41 mV 10 mA cm-2 Tafel slope 54 dec-1 hydrogen evolution reaction. Our results offer understanding conduction contributed ultraordered atomic arrangement innovative mechanisms for future potential catalysts optimized architecture.
Language: Английский
Citations
1
Advanced Science, Journal Year: 2025, Volume and Issue: unknown
Published: Jan. 9, 2025
Abstract High‐performance bulk graphite (HPBG) that simultaneously integrates superior electrical conductivity and excellent strength is in high demand, yet it remains critical challenging. Herein a novel approach introduced utilizing MOF‐derived nanoporous metal/carbon composites as precursors to circumvent this traditional trade‐off. The resulting graphite, composed of densely packed multilayered graphene sheets functionalized with diverse cobalt forms (nanoparticles, single atoms, clusters), exhibits unprecedented all directions (in‐plane: 7311 S cm⁻¹, out‐of‐plane: 5541 cm⁻¹) mechanical (flexural: 101.17±5.73 MPa, compressive: 151.56±2.53 MPa). Co nanoparticles act autocatalysts binders, promoting strong interlayer adhesion among highly graphitized layers via spark plasma sintering. nano‐interfaces between Co‐create bridges nanosheets, facilitating efficient electron migration enhanced stiffness the assembled nanocomposites. Leveraging these exceptional properties, practical demonstrations highlight immense potential robust material for applications demanding electromagnetic interference shielding heating. An innovative approach, which effectively decouples from paves way creation HPBGs tailored application sectors.
Language: Английский
Citations
1
Chemical Society Reviews, Journal Year: 2025, Volume and Issue: unknown
Published: Jan. 1, 2025
This review examines the strategies of symmetry breaking (charge/coordination/geometric) in single-atom catalysts to regulate active site electronic structures, greatly enhancing catalytic performance.
Language: Английский
Citations
1
Nanomaterials, Journal Year: 2025, Volume and Issue: 15(8), P. 634 - 634
Published: April 21, 2025
Atomically dispersed catalysts, including single-atom, dual-atom, and periodic single-metal site have revolutionized electrocatalysis by merging atomic precision with heterogeneous stability. This review traces their evolution from pioneering stabilization strategies to advanced microenvironment engineering, enabling breakthroughs in oxygen reduction, hydrogen evolution, CO2 reduction. SACs maximize atom utilization but face multi-step reaction limits, addressed DACs through synergistic dual-site mechanisms. PSMSCs further enhance activity via ordered arrangements, ensuring uniform active sites mechanistic clarity. Key include engineering tailor sites, as well characterization techniques revealing dynamic restructuring under operando conditions. The transition isolated atoms ensembles highlights the importance of atomic-level control unlocking new catalytic work underscores transformative potential ADCs sustainable energy technologies provides a roadmap for future research rational catalyst design, behavior analysis, scalable synthesis.
Language: Английский
Citations
0
ACS Nano, Journal Year: 2025, Volume and Issue: unknown
Published: May 1, 2025
Heterogeneous dual-atom catalysts (DACs), defined by atomically precise and isolated metal pairs on solid supports, have garnered significant interest in advancing catalytic processes technologies aimed at achieving sustainable energy chemical production. DACs present board opportunities for atomic-level structural property engineering to enhance performance, which can effectively address the limitations of single-atom catalysts, including restricted active sites, spatial constraints, typically positive charge nature supported single species. Despite rapid progress this field, intricate relationship between local atomic environments behavior dual-metal sites remains insufficiently understood. This review highlights recent major challenges field. We begin discussing modulation coordination electronic structures its impact performance. Through specific case studies, we demonstrate importance optimizing entire ensemble achieve efficient, selective, stable performance both model industrially relevant reactions. Additionally, also outline future research directions, emphasizing synthesis, characterization, practical applications, aiming fully unlock potential these advanced catalysts.
Language: Английский
Citations
0
Energy storage materials, Journal Year: 2025, Volume and Issue: unknown, P. 104157 - 104157
Published: March 1, 2025
Language: Английский
Citations
0