Poly(3,4-ethylenedioxithiophene) coated on vanadium oxide hydration nanobelts enhancing ammonium-ion storage for hybrid supercapacitors

Journal of Colloid and Interface Science, Год журнала: 2025, Номер 685, С. 626 - 636

Опубликована: Янв. 22, 2025

Язык: Английский

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Vanadium-Based Cathodes for Aqueous Zinc-Ion Batteries: Mechanisms, Challenges, and Strategies

Accounts of Chemical Research, Год журнала: 2024, Номер 57(19), С. 2887 - 2900

Опубликована: Сен. 16, 2024

ConspectusZinc-ion batteries (ZIBs) are highly promising for large-scale energy storage because of their safety, high energy/power density, low cost, and eco-friendliness. Vanadium-based compounds attractive cathodes versatile structures multielectron redox processes (+5 to +3), leading capacity. Layered or 3-dimensional open tunnel frameworks allow easy movement zinc-ions without breaking the structure apart, offering superior rate-performance. However, challenges such as dissolution phase transformation hinder long-term stability vanadium-based in ZIBs. Although significant research has been dedicated understanding mechanisms developing high-performance cathodes, uncertainties still exist regarding critical dissolution, actual active specific optimization strategy. For example, it is unclear whether materials α-V

Язык: Английский

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Pre‐Intercalation of TMA Cations in MoS₂ Interlayers for Fast and Stable Zinc Ion Storage

Small, Год журнала: 2024, Номер 20(44)

Опубликована: Июль 10, 2024

Applications of aqueous zinc ion batteries (ZIBs) for grid-scale energy storage are hindered by the lacking stable cathodes with large capacity and fast redox kinetics. Herein, intercalation tetramethylammonium (TMA

Язык: Английский

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Zinc‐Seeded PEDOT:PSS Aerogel Host as Highly Reversible Dendrite‐Free Zinc Metal Anode

Small, Год журнала: 2025, Номер unknown

Опубликована: Фев. 26, 2025

Abstract The parasitic reactions and rampant dendrite growth on the Zn anode side pose significant obstacles to future applications of aqueous zinc ion batteries. Herein, a lightweight host is reported by introducing nanosized metallic into poly(3,4‐ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS) (P‐S) aerogel (Zn/P‐S). ‒SO 3 H groups interact with 2+ guild their migrations along PSS chains, while offer additional nucleation sites homogenize electrical concentration. Owing these synergistic effects, uniform dense deposition (002) plane aligned parallel P‐S substrate achieved, even at high plating capacity 20 mAh cm −2 . Moreover, deposited over Zn/P‐S (Zn@Zn/P‐S) exhibits highly reversible plating/stripping behavior Coulombic efficiency maintained 99% 700 cycles. Consequently, Zn@Zn/P‐S‐based symmetric Zn||Zn cell can work stably 500 h 0.5 ‒2 100 4 depth discharge 40%. A Zn@Zn/P‐S||NaV O 8 full battery presents rate capability 82.2% retention after 1000 cycles 2 g ‒1 This strategy provides novel approach for designing polymer‐based anodes corrosion‐resistant dendrite‐free striping/plating behaviors.

Язык: Английский

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N‐Doped Ti₃C₂T_x Interfacial Layer Enabling Uniform Zn Deposition along (002) Plane for Stable Aqueous Zinc‐Ion Battery

Small, Год журнала: 2024, Номер 20(46)

Опубликована: Июль 31, 2024

Abstract Aqueous zinc‐ion batteries hold great potentials for large‐scale grid energy storage. However, the electrode corrosion, hydrogen evolution, and dendrite growth of Zn anode often lead to cell failure. Herein, N groups in Ti 3 C 2 T x (NMXH) are introduced as interfacial layer through hydrothermal treatment with urea. The experimental analysis density functional theory calculation indicate that can homogenize electric field distribution, promote adsorption 2+ on groups, strength interactions between atoms (002) plane. Thereby, use NMXH effectively suppress side reactions realize uniform deposition along As a consequence, NMXH─Zn//Zn exhibits an ultralow nucleation overpotential (1 mA cm −2 , 18.9 mV) stably operate 1400 h at 1 mAh ) 110 40 ). A full battery V O 5 nanowires cathode displays discharge capacity 219 g −1 (1.0 ), decent rate capability cyclability. significant role reported this work offers promising avenue improve cycling stability anodes aqueous zinc batteries.

Язык: Английский

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Highly Reversible and Dendrite-Free Zinc Anodes Enabled by PEDOT Nanowire Interfacial Layers for Aqueous Zinc-Ion Batteries

ACS Applied Materials & Interfaces, Год журнала: 2024, Номер 16(32), С. 43026 - 43037

Опубликована: Авг. 2, 2024

The aqueous zinc-ion batteries (ZIBs) have gained increasing attention because of their high specific capacity, low cost, and good safety. However, side reactions, hydrogen evolution reaction, uncontrolled zinc dendrites accompanying the Zn metal anodes impeded applications ZIBs in grid-scale energy storage. Herein, poly(3,4-ethylenedioxythiophene) (PEDOT) nanowires as an interfacial layer on anode (Zn-PEDOT) are reported to address above issues. Our experimental results density functional theory simulation reveal that interactions between

Язык: Английский

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Enhancement of De‐Solvation Kinetics on V₅O₁₂•6H₂O Cathode Through a Bi‐Functional Modification Layer for Low‐Temperature Zinc‐Ion Batteries

Advanced Functional Materials, Год журнала: 2024, Номер unknown

Опубликована: Дек. 10, 2024

Abstract Zinc‐ion batteries (ZIBs) show great promise for next‐generation energy storage, but their performance at low temperatures is severely hindered by sluggish desolvation kinetics cathode‐electrolyte interface. To address this limitation, a zincophilic‐hydrophobic poly(3,4‐ethylenedioxythiophene) (PEDOT) modified layer proposed on V 5 O 12 •6H 2 cathode. Ab initio molecular dynamics simulations indicate that modification strategy promotes Zn ⁺ adsorption and reduces the free dissociating hydrated 2+ to form interface, across temperature of 280 240 K. As result, PEDOT‐modified cathode exhibits significantly improved diffusion kinetics, delivering superior rate with remarkable capacity 226.5 mAh g⁻¹ 40 A g⁻¹. Notably, even −30 °C, maintains high 268.3 mA 0.2 robust retention (92.4%) over 1,000 cycles 1 This approach markedly improves low‐temperature operational efficiency, highlighting potential interface engineering advance zinc‐ion in cold environments.

Язык: Английский

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Activated proton storage in molybdenum selenide via nanostructure molecular engineering

Chemical Engineering Journal, Год журнала: 2024, Номер unknown, С. 158035 - 158035

Опубликована: Ноя. 1, 2024

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Polyaniline-vanadium oxide composite for Zn-ion electrochromic devices and mechanistic investigation by in-situ Raman spectroscopy

Rare Metals, Год журнала: 2025, Номер unknown

Опубликована: Март 14, 2025

Язык: Английский

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MnO₂ Microspheres as Self-Degraded Templates to Fabricate Hollow Urchin-Like Polyaniline Microspheres for Electrochemical Energy Storage

ACS Applied Polymer Materials, Год журнала: 2025, Номер unknown

Опубликована: Март 19, 2025

Conductive polymers have great potential applications as electrode materials for supercapacitors in small energy storage devices. First, manganese sulfate (MnSO4) was oxidized to dioxide (MnO2) microspheres with a diameter of 1.5–3.5 μm by catalysis Ag+. Subsequently, polyaniline (PANI) grew situ on the surface MnO2 dilute solution method, using self-degraded template an acidic environment. The gradually reduced Mn2+ because acted both oxidant and polymerization aniline, resulting formation PANI hollow urchin-like structure. as-prepared PANI, its high specific area porous properties, considered material surface–interface chemical storage. Therefore, capacitance could reach 531 ± 35 F/g at 5 mV/s, loss 41.0% when current density increased from 1 10 A/g. Further analysis charge mechanism revealed that controlled slow kinetics, indicating reaction mainly Faradaic intercalation process inside active material. A symmetric supercapacitor device also assembled microsphere electrodes, maximum about 17.92 Wh/kg power 500 W/kg.

Язык: Английский

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