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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Silver nanoparticles doped poly(3, 4-ethylene dioxythiophene) on titania nanotubes for orthopaedic application

Applied Surface Science, Год журнала: 2022, Номер 610, С. 155416 - 155416

Опубликована: Окт. 31, 2022

Язык: Английский

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Incorporating Conducting PEDOT between Graphene Films for Stable Capacitive Energy Storage

ACS Applied Nano Materials, Год журнала: 2022, Номер 5(12), С. 19006 - 19016

Опубликована: Дек. 7, 2022

Suppressing sheets stacking of graphene oxide (GO) films by introducing conductive polymers proves to be an effective way develop graphene-based electrodes for electrochemical energy storage. This work reports a facile method the preparation poly(3,4-ethylenedioxythiophene)/GO (PEDOT/GO) hybrid incorporating poly(3,4-ethylenedioxythiophene):poly(4-styrenesulfonate) (PEDOT:PSS) between GO sheets. The subsequent dissolution partial PSS substantially promotes ion diffusion kinetics and simultaneously enhances film conductivity up 931 S m–1. It has specific capacitance 210 F g–1 retains 98% its after 10 000 cycles. Further reduction PEDOT/GO in hydrazine vapor converts chemically reduced oxides (rGO) expands compact into foam-like structure. Due more opened electrochemically active sites favorable pathways, enhanced capacitive performance including larger performances 257 g–1, higher rate capability 54% 0.2–10 A superior cycling stability with 97% preservation over cycles been achieved PEDOT/rGO film. An all-solid-state capacitor assembled also demonstrates good satisfactory flexibility at large bending angles.

Язык: Английский

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Lignin/polypyrrole interpenetrating networks decorated Lignin-containing cellulose nanofibril composite membrane for High-performance supercapacitors

Chemical Engineering Journal, Год журнала: 2023, Номер 470, С. 144180 - 144180

Опубликована: Июнь 21, 2023

Язык: Английский

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Development of 1D‐Metalloid‐Induced Highly Porous Carbon Nanofiber Conjugated with PEDOT Polymer Through Concurrent Selenization of ZIF‐67 for Energy Storage and Green H₂ Production

Small, Год журнала: 2024, Номер unknown

Опубликована: Июнь 7, 2024

Abstract Manufacturing high‐performance and cost‐affordable non‐metallic, electroactive 1D carbon material for energy storage hydrogen evolution reaction (HER) is of foremost importance to respond positively the impending crisis. Porous N‐doped nanofiber (PNCNF) successfully synthesized by electrospinning, using selenium nanoparticles as a sacrificial template (where Se reutilized ZIF‐67 selenization bi‐process, surface PNCNF modified with poly(3,4‐ethylenedioxythiophene) (PNCNT/PEDOT) electropolymerization. The prepared materials are found ideal (supercapacitor) electrocatalysis (HER). bi‐functional has shown excellent capability specific capacitance (C S ) 230 F g −1 395 (PNCNF/PEDOT), symmetric supercapacitor device, PNCNF/PEDOT//PEDOT/PNCNF, exhibits 32.4 Wh kg density at 14400 W power 96.6% Coulombic efficiency 106% C end 5000 charge–discharge cycles. rate cell PNCNF/PEDOT 51% current increase from 1 8 A , while that meager 29% only. Electrocatalytic HER electrode achieved an overpotential 281 mV@10 mA cm −2 relative Pt/C low Tafel slop value 96 mV dec .

Язык: Английский

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