Regulating the P-band center of SnS2-SnO2 heterostructure to boost the redox kinetics for high-performance lithium-sulfur battery

Chemical Engineering Journal, Год журнала: 2024, Номер 490, С. 151526 - 151526

Опубликована: Апрель 22, 2024

Язык: Английский

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CoFe₂O₄ nanoparticles as a bifunctional agent on activated porous carbon for battery-type asymmetrical supercapacitor

Chemical Synthesis, Год журнала: 2024, Номер 4(2)

Опубликована: Май 14, 2024

The low performance of electrode materials is the main obstacle limiting development supercapacitor industry, which can be solved by doping cobalt ferrate nanoparticles (NPs) with carbon materials. Herein, composites CoFe2O4 based on activated (AC) were successfully prepared using a one-step solvothermal method and subsequently applied in anodes battery-type asymmetrical supercapacitors. effect temperature heating time composite characteristic was systematically evaluated. electrochemical analysis three-electrode system revealed that modified heated at 140 °C for 24 h (140MAC24) displayed excellent specific capacitance 571.36 F/g current density 0.2 A/g due to synergistic double-layer faradic capacitance. Moreover, iron elements could change into oxide form accelerate charge potential range window -1.0 -0.2 V discharge from V, respectively. Meanwhile, result assessing economic feasibility suggested splendid availability 140MAC24 electrodes. Additionally, assembled outstanding 171.31 1.8 energy 43.5 Wh/kg A/g, retention rate 82.49% after 10,000 cycles. properties demonstrated used as bifunctional agent enhancing supercapacitive performance.

Язык: Английский

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Elevating Lithium and Sodium Storage Performance Through the Synergistic Integration of ZnS and Sulfurized Polyacrylonitrile Hybrid Anode Materials

Energy & environment materials, Год журнала: 2025, Номер unknown

Опубликована: Март 13, 2025

High‐performance lithium‐ion batteries and sodium‐ion have been developed utilizing a hybrid anode material composed of zinc sulfide/sulfurized polyacrylonitrile. The in situ‐ generated sulfide nanoparticles serve as catalytic agents, significantly enhancing conductivity, shortening diffusion paths, accelerating reaction kinetics. Simultaneously, the sulfurized polyacrylonitrile fibers form three‐dimensional matrix that not only provides continuous network for rapid electron transfer but also prevents nanoparticle aggregation mitigates volume changes during charge–discharge cycles. Moreover, heterointerface structure at junction increases availability active sites facilitates both ion adsorption transfer. As an batteries, demonstrates high reversible capacity 1178 mAh g −1 after 100 cycles current density 0.2 A , maintaining 788 200 1 . It exhibits excellent sodium storage capabilities, retaining 625 150 Furthermore, ex‐situ X‐ray photoelectron spectroscopy, diffraction, 7 Li solid‐state magic angle spinning nuclear magnetic resonance, situ Raman are employed to investigate mechanisms anode, providing valuable insights pave way advancement materials batteries.

Язык: Английский

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The wide range of battery systems: From micro- to structural batteries, from biodegradable to high performance batteries

Progress in Materials Science, Год журнала: 2025, Номер unknown, С. 101506 - 101506

Опубликована: Май 1, 2025

Язык: Английский

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Synthesis of Highly Cyclized Polyacrylonitrile via Liquid-Phase Cyclization for Advanced Cathode Materials

ACS Sustainable Chemistry & Engineering, Год журнала: 2024, Номер unknown

Опубликована: Ноя. 21, 2024

Sulfurized polyacrylonitrile (SPAN) based on a solid–solid reaction has attracted wide attention due to its advantages of no shuttle effect. However, the solid-state raw material is used during preparation SPAN and results in low vulcanization efficiency. Meanwhile, series side reactions such as formation cyclic polyamines conjugated polyenes, cross-linking reactions, polymer degradation prevent an ideal trapezoidal main-chain structure. In this work, liquid-phase cyclization method proposed prepare materials (SPAN-L). The temperature significantly lowered by leveraging high reactivity characteristics under conditions, thereby inhibiting caused improving structural regularity SPAN. SPAN-L cathode good uniform sulfur distribution, which contribute enhanced electrical conductivity utilization ratio. Additionally, ex situ Raman XPS analyses reveal stable C–S bonds cycling, indicating electrode stability. This study synthesizes with performance adjusting environment, showing better electronic conductivity, utilization, cycle stability than solid-phase methods.

Язык: Английский

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3D aligned architectures for lithium batteries: Mechanism, design, and manufacture

Energy storage materials, Год журнала: 2024, Номер unknown, С. 103999 - 103999

Опубликована: Дек. 1, 2024

Язык: Английский

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Tuning the Local-chemistry of the SPAN to Realize the Development of Room-Temperature Sodium-Sulfur Pouch Cells

Journal of Materials Chemistry A, Год журнала: 2024, Номер unknown

Опубликована: Дек. 3, 2024

The viability of RT-Na/S batteries is limited due to the sluggish kinetics cathode. Cathode additives, e.g. , ZnS, can accelerate reactions by inherently increasing electronic and ionic conduction Na + within SPAN matrix.

Язык: Английский

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