Heterostructure Interface Construction of Cobalt/Molybdenum Selenides toward Ultra‐Stable Sodium‐Ion Half/Full Batteries

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: June 21, 2024

Abstract Transition metal selenides (TMSes) are considered promising candidates for the anodes of sodium‐ion batteries (SIBs) due to their substantial theoretical capacity. However, TMSes still face with inferior cycling lifespan caused by sluggish Na + diffusion kinetics and vigorous volume variations during dis/charge processes. Engineering heterostructure is an attractive solution rapid transfer, introducing carbonaceous materials also facilitates enhanced conductivity structural stability. Herein, CoSe/MoSe 2 combined homogeneous carbon composites rational designed. The kinetic analysis calculations verified that heterointerface engineering induced build‐in electric field effect can amplifies kinetics, while contributes electrical Expectedly, ‐C exhibits high capacity extremely ultra‐long (320.9 mAh g −1 at 2.0 A over 10,000 cycles average decay only 0.01781 per cycle). Furthermore, in situ X‐ray diffraction (XRD), ex photoelectorn (XPS), high‐resolution electron microscopy (HRTEM) exploited explore storage mechanism. In addition, 3 V (PO 4 ) @rGO//CoSe/MoSe (NVP@rGO//CoSe/MoSe ‐C) pouch‐type full‐cells successfully assembled delivered satisfactory performance. This research presents a viable strategy targeted aimed enhancing efficiency SIBs.

Language: Английский

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Design Lithium Exchanged Zeolite Based Multifunctional Electrode Additive for Ultra‐High Loading Electrode Toward High Energy Density Lithium Metal Battery

Advanced Energy Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 27, 2024

Abstract The practicalization of a high energy density battery requires the electrode to achieve decent performance under ultra‐high active material loading. However, as thickness increases, there is notable restriction in ionic transport electrodes, limiting diffusion kinetics Li + and utilization rate substances. In this study, lithium‐ion‐exchanged zeolite X (Li‐X zeolite) synthesized via exchange strategy enhance kinetics. When incorporated Li–X into loading cathodes, it possesses i) electron conductivity with uniform network by reducing tortuosity, ii) ion attributes modulated diffusivity Li‐X iii) elasticity prevent particle‐level cracking electrode‐level disintegration. Moreover, at solid/liquid interface facilitates formation stable cathode electrolyte interface, which effectively suppresses side reactions mitigates dissolution transition cations. Therefore, an (66 mg cm −2 ) fabricated dry technology, demonstrating remarkable areal capacity 12.7 mAh 464 Wh kg −1 lithium metal battery. well‐designed structure multifunctional additive thick cathodes holds promise battery's capability, cycling stability, overall density.

Language: Английский

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Solvothermally synthesized MnO2@Zn/Ni-MOF as high-performance supercapacitor electrode material

Ionics, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 8, 2025

Language: Английский

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Promoting Robust and Rapid Na‐Ion Storage of Molybdenum‐Based Sulfide via Rational Hetero and Hollow Structure Design

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 3, 2025

Abstract Molybdenum disulfide (MoS 2 ), characterized by its two‐dimensional structure and high theoretical specific capacity, is considered a prospective anode of Na‐ion battery. However, the cycling rate capabilities are hampered sluggish charge transfer kinetics poor structural stability. To overcome issues, most efforts have been focused on optimizing MoS . Nevertheless, rationally designing that can present rapid durable storage while ensuring large remains challenges. Herein, /MnS heterostructure featuring sphere‐like hollow morphology designed according to Ostwald ripening process Kirkendall effect. This construction effectively establish an interfacial built‐in electric field activated MnS , which exhibit P‐type N‐type semiconductor characteristics, respectively, thereby promoting electrochemical kinetics. Moreover, excellent stability after repeated (de)sodiation processes remarkably achieved thanks robust design, significantly achieving outstanding tolerance changes. Consequently, delivers capacity (594.8 mAh g −1 at 0.1 A superior performance (up 100 ultrastable capability (30 000 cycles with ≈81.4% retention). The work affords effective optimization tactic develop high‐performance conversion‐type electrodes for alkali‐ion batteries.

Language: Английский

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Boosting High Energy Density for Aqueous Ni–Zn Batteries by Synergetic Engineering of Bimetal Doping and Se Vacancy in Ni₃Se₂

ACS Applied Energy Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 20, 2025

Language: Английский

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Understanding mechanisms of fast sodium storage kinetics for MXene/MoS2@C in ether electrolytes

Journal of Power Sources, Journal Year: 2025, Volume and Issue: 641, P. 236852 - 236852

Published: April 2, 2025

Language: Английский

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Heterostructure Interface Construction of Zinc/Cobalt Sulfides Derived From Binary Metal–Organic Framework Toward Ultrastable Sodium‐Ion Half/Full Batteries

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: April 1, 2025

Abstract Developing stable material structures and modulating electronic is a good strategy for improving metal‐sulfide electrode conductivity, reducing volume change, enhancing the reaction kinetics of Na + electrodes to achieve electrochemical performance. However, it continues be challenging create hybrid with precisely defined architectures desired compositions. Thus, carbon‐coated Zinc/Cobalt sulfide heterostructure nanorods (ZnS/CoS@C) are prepared by sulfidation treatment binary metal–organic framework in one step. As expected, ZnS/CoS@C displayed an ultra‐long lifespan (403 mAh g −1 at 10 A over 1700 cycles) superior rate performance (653.1/333.3 0.5/30 ). The kinetic analysis Density functional theory calculations show that excellent attributed high pseudocapacitive fast behavior. Na‐ion storage mechanism revealed X‐ray diffraction, ex situ photoelectron spectroscopy, high‐resolution transmission electron microscopy. Furthermore, full cells ZnS/CoS@C//Na 3 V 2 (PO 4 ) @rGO successfully assembled demonstrated impressive (186.3 0.5 600 cycles). This study offers easy way design heterostructured anode materials sodium‐ion batteries.

Language: Английский

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Emerging Issues and Opportunities of 2D Layered Transition Metal Dichalcogenide Architectures for Supercapacitors

ACS Nano, Journal Year: 2025, Volume and Issue: unknown

Published: April 2, 2025

Two-dimensional layered transition metal dichalcogenides (2D TMDs) have emerged as promising candidates for supercapacitor (SCs) owing to their tunable electronic properties, structures, and effective ion intercalation capabilities. Despite these advantages, challenges such low electrical conductivity, the interlayer restacking, oxidation structural collapse hinder practical implementation. This review provides a comprehensive overview of recent advances in development 2D TMDs SCs. We begin by outlining charge storage mechanisms design principles SCs, followed an in-depth discussion synthesis methods associated fabricating TMD architectures. The subsequent sections explore crystal structures reaction mechanisms, illustrating electrochemical potential Furthermore, we highlight material modification strategies, including nanostructuring, defect engineering, phase control, surface/interface modulation, which been proposed overcome existing challenges. Finally, address critical issues emerging opportunities inspire SC technologies.

Language: Английский

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Yolk–Shell MoS₂ Nanosphere-Doped Electron-Rich Iron Heteroatoms for Ultralong Lifespan Na-Ion Batteries

ACS Sustainable Chemistry & Engineering, Journal Year: 2024, Volume and Issue: 12(33), P. 12596 - 12607

Published: Aug. 5, 2024

Molybdenum disulfide (MoS2) has been extensively studied as an anode for sodium-ion batteries owing to its large theoretical specific capacity and steady crystal texture. Nevertheless, the unsatisfactory rate capability short cycling lifespan of MoS2 derived from inferior electrical conductivity extensive volume variation among Na+ insertion extraction have greatly impeded practical exploitation. Hence, we proposed electron coupling strategy with rational incorporation iron heteroatoms in a novel yolk–shell nanostructure (FMS@C) through advanced micelle-confined microemulsion technology. In this configuration, doping electron-rich Fe breaks long-range ordered texture pristine activated electronic structures, thus enabling accelerated mass transfer charge diffusion. Meanwhile, nanoarchitecture enough inner room can efficiently accommodate during repeated charge/discharge cycles, favoring high stability structure. Consequently, prepared FMS@C delivers superior impressive reversible retention, it achieve 201.5 mA h–1 after 5500 cycles at 5 A g–1 low decay 0.0057% per cycle. Accordingly, work opens up brilliant way improve performance metal sulfur compounds energy storage electrodes.

Language: Английский

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N‐Doping Fe‐C@Nb₂CT_x MXenes with High Stability and Strong Activity for Sodium‐Ion Storage and Overall Water Splitting

Small, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 30, 2024

The development of highly stable and strongly active electrode materials for sodium-ion batteries (SIBs) overall water splitting (OWS) is critical in sustainable energy storage conversion systems. Here, a new material N-Fe-C@Nb

Language: Английский

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