Confining WS2 hierarchical structures into carbon core-shells for enhanced sodium storage

Journal of Colloid and Interface Science, Год журнала: 2024, Номер 677, С. 637 - 646

Опубликована: Авг. 16, 2024

Язык: Английский

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Synergistic effect of holey graphene and CoSe2-NiSe2 heterostructure to enhance fast Na-ion transport

Chemical Engineering Journal, Год журнала: 2024, Номер 498, С. 155353 - 155353

Опубликована: Авг. 31, 2024

Язык: Английский

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Design and Optimization of Iron‐Based Superionic‐Like Conductor Anode for High‐Performance Lithium/Sodium‐Ion Batteries

Small Methods, Год журнала: 2024, Номер unknown

Опубликована: Сен. 11, 2024

Abstract Metal selenides have received extensive research attention as anode materials for batteries due to their high theoretical capacity. However, significant volume expansion and slow ion migration rate result in poor cycling stability suboptimal performance. To address these issues, the present work utilized multivalent iron ions construct fast pathways similar superionic conductors (Fe‐SSC) introduced corresponding selenium vacancies enhance its Based on first‐principles calculations molecular dynamics simulations, it is demonstrated that addition of presence reduced material's function adsorption energy, lowered barriers, enhances Li + Na . In Li‐ion half batteries, this composite material exhibites reversible capacity 1048.3 mAh g −1 at 0.1 A after 100 cycles 483.6 5.0 1000 cycles. Na‐ion 687.7 200 325.9 It proven based Fe‐SSC great applications both batteries.

Язык: Английский

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Electron‐Spin Regulation Driving Heterointerface Electron Distribution and Phase Transition toward Ultrafast and Durable Sodium Storage

Small, Год журнала: 2024, Номер unknown

Опубликована: Сен. 16, 2024

Abstract Phase engineering is an effective strategy for modulating the electronic structure and electron transfer mobility of cobalt selenide (CoSe 2 ) with remarkable sodium storage. Nevertheless, it remains challenging to improve fast‐charging cycling performance. Herein, a heterointerface coupling induces phase transformation from cubic CoSe orthorhombic accompanied by formation MoSe construct /MoSe heterostructure decorated N‐doped carbon layer on 3D graphene foam @NC/GF). The incorporated Mo cations in bridged o‐CoSe not only act donor regulate charge‐spin configurations more active states but also trigger upshift d/p band centers decreased ∆ d‐p center gap, which greatly enhances ion adsorption capability lowers diffusion barrier. As expected, @NC/GF anode demonstrates high‐rate 447 mAh g −1 at A excellent cyclability 298 1 over 1000 cycles. work deepens understanding elaborate construction heterostructured electrodes high‐performance SIBs.

Язык: Английский

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The Charge Self‐Regulation Effect Induced by Microcrystalline‐Amorphous Heterointerface Network Toward Fast Charging Sodium Ion Batteries

Advanced Energy Materials, Год журнала: 2025, Номер unknown

Опубликована: Янв. 5, 2025

Abstract Sodium‐ion batteries (SIBs), recognized for their abundant resource availability, are emerging as a viable alternative to conventional batteries. Nevertheless, sluggish electrons/ions kinetics impedes further advancement in SIBs technology. Herein, novel microcrystalline‐MoSe 2 /amorphous‐MoSe x O y (C‐MoSe /A‐MoSe ) is developed through situ low‐temperature oxidation of crystalline MoSe . The microcrystalline acts robust framework, while the amorphous phase fills interstitial spaces. This anode material characterized by an optimized microcrystalline‐amorphous heterointerface. resultant charge self‐regulation effect can be exploited modulate active electron states, thereby ensuring high‐speed and stable sodium storage performance. heterointerface demonstrates ultrahigh specific capacity (641.0 mAh g −1 at 0.5 A maintains splendid rate performances up 100 (324.2 ). Detailed theoretical experimental researches indicate that enhanced performance results from production electronic which initiated C‐MoSe , featuring Mo─Se bonds, regulates interfacial redistribution facilitate transfer across interface between phases. findings suggest effect, prompted network, inherently accelerates electron/ion transport, offering promising electrode design strategy fast‐charging

Язык: Английский

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High‐Coordination and Nb‐Bridging of Bimetallic Amorphous P₆‐Nb‐W‐P₅ Clusters in Carbon Nanospheres for High‐Performance Sodium‐Ion Hybrid Capacitors

Advanced Science, Год журнала: 2025, Номер unknown

Опубликована: Янв. 23, 2025

Abstract Amorphous clusters are gaining prominence as prospective hosts for sodium‐ion hybrid capacitors (SIHCs), but their efficacy is still affected by atomic coordination. Optimization of ion storage and charge transport can be achieved through high coordination bimetallic configurations. Herein, high‐coordination amorphous P 6 ‐Nb‐W‐P 5 (Nb/W‐P) skillfully tailored bridging Nb into the second shell W in W‐P configuration, nested situ conductive stable N, co‐doped carbon nanospheres (Nb/W‐P@NPC). Such with atom utilization offer profuse Na + sites due to As an electron donor, Nb‐bridging subtly modify electronic structure clusters, broaden hybridization d‐p orbitals, thus improving transfer efficiency fostering diversified active sites. Compared low‐coordinated L @NPC high‐coordinated W‐P@NPC, reversible capacity Nb/W‐P@NPC upgrades 556.3 mAh g −1 at 0.1 A , alongside exceptional cycling stability rates. When integrated SIHCs, energy density high‐power output (223.6 9800 kg ) achieved. By systematically exploring effect design on efficacies this study has greatly advanced development SIHC technologies.

Язык: Английский

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Molecular Engineering of Hole-Selective Layer of Te_xSe_1–x for High-Performance Short-Wave Infrared Photodetectors

ACS Photonics, Год журнала: 2025, Номер unknown

Опубликована: Янв. 31, 2025

Язык: Английский

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Amorphous/Crystalline Heterostructured Nanomaterials: An Emerging Platform for Electrochemical Energy Storage

Small, Год журнала: 2025, Номер unknown

Опубликована: Фев. 28, 2025

Abstract With the expanding adoption of large‐scale energy storage systems and electrical devices, batteries supercapacitors are encountering growing demands challenges related to their capability. Amorphous/crystalline heterostructured nanomaterials (AC‐HNMs) have emerged as promising electrode materials address these needs. AC‐HNMs leverage synergistic interactions between amorphous crystalline phases, along with abundant interface effects, which enhance capacity output accelerate mass charge transfer dynamics in electrochemical (EES) devices. Motivated by elements, this review provides a comprehensive overview synthesis strategies advanced EES applications explored current research on AC‐HNMs. It begins summary various Diverse devices AC‐HNMs, such metal‐ion batteries, metal–air lithium–sulfur supercapacitors, thoroughly elucidated, particular focus underlying structure–activity relationship among amorphous/crystalline heterostructure, performance, mechanism. Finally, perspectives for proposed offer insights that may guide continued development optimization.

Язык: Английский

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Dense homogeneous hetero-interfacial coupling between amorphous Mo–N and crystalline Mo2N for enhanced sodium-ion storage

Rare Metals, Год журнала: 2025, Номер unknown

Опубликована: Март 4, 2025

Язык: Английский

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Flexible Co3(PO4)2@ Bacterial Carbon/Reduced Graphene Oxides for Li-Ion batteries anode

Materials Letters, Год журнала: 2025, Номер unknown, С. 138368 - 138368

Опубликована: Март 1, 2025

Язык: Английский

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