Boosting supercapacitor performance with Ni-doped AgFeO2 nanoparticles

Journal of Energy Storage, Journal Year: 2025, Volume and Issue: 110, P. 115249 - 115249

Published: Jan. 5, 2025

Language: Английский

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Nanostructured Quasiplanar Heterointerface for a Highly Stable and Ultrafast Switching Flexible Inorganic Electrochromic Smart Window

Nano Letters, Journal Year: 2025, Volume and Issue: 25(6), P. 2342 - 2349

Published: Jan. 31, 2025

Electrochromic (EC) technology can adjust optical properties under electrical stimulation with broad applications in smart windows, displays, and camouflage. However, significant challenges remain developing inorganic EC films high durability, rapid response, mechanical flexibility due to intrinsic brittleness dense microstructure. Herein, a nanostructured quasiplanar heterointerface (Q-PHI) is first introduced into the electrode/EC interlayer realize robust, ultrafast switching tungsten trioxide (WO3) film. The 200 nm-thick Q-PHI WO3 film exhibits remarkable performance, including large contrast (81.8% 83.4% at 700 1500 nm), of 2.4 1.8 s, excellent stability (10,000 cycles 21.3% optical-contrast loss). A large-area (20 × 15 cm2) flexible window also successfully achieved. mechanism lies intense built-in electric field strong interfacial bonding induced by unique longitudinal gradient distribution, greatly enhancing electron/ion transport kinetics, surface ion adsorption, durability.

Language: Английский

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1D Co₆Mo₆C‐Based Heterojunctional Nanowires from Pyrolytically “Squeezing” PMo₁₂/ZIF‐67 Cubes for Efficient Overall Water Electrolysis

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

Published: Jan. 6, 2025

The bi-transition-metal interstitial compounds (BTMICs) are promising for water electrolysis. previous BTMICs usually composed of irregular particles. Here, this work shows the synthesis novel 1D Co6Mo6C-based heterojunction nanowires (1D Co/Co6Mo6C) with diameters about 50 nm and a length-to-diameter ratio 20 efficient An interesting growth process based on pyrolytically "squeezing" PMo12 (Phosphomolybdic acid)/ZIF-67 (Zeolitic Imidazolate Framework-67) cube precursor is demonstrated. related to role Mo species isolating Co species. A series tests theoretical calculation show mutual regulation optimize electronic structure, accelerating H2O dissociation reduction kinetics H+. Additionally, provide pathways electron transfer transmission reactants. Consequently, Co/Co6Mo6C exhibits high activity hydrogen evolution reaction (η10 31 mV) oxygen 210 in 1 m KOH. electrolytic cell requires low voltage 1.43 V drive 10 mA cm-2. catalyst also good HER performance phosphate-buffered saline solution, exceeding Pt/C at current density >42

Language: Английский

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Dimensionally Confined Growth in Nanometer‐Sized Hierarchical Heterostructures: Nanoscale Visualization of Enhanced Magnetic and Electric Interactions

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

Published: Jan. 10, 2025

Abstract Quantum size effects and interfacial dimensional interactions enable nanometer‐scale hierarchical heterostructures to adjust band structures by energy level discretization, impurity formation, inversion, allowing for controlled carrier localization directional relaxation. These unique characteristics show great potential applications in ferroelectrics, optoelectronics, capacitors, sensors. Yet, optimizing performance fine‐tuning the properties of nanoscale systems, especially composition, remains a considerable challenge. Here dimensionally confined synthesis is reported through pyrolysis‐based metal‐organic framework‐on‐metal‐organic framework (MOF‐on‐MOF) strategy, resulting continuous metal‐carbon carbon‐oxide interfaces below 50 nm. Off‐axis electron holography theoretical calculations are utilized visualize dynamic conversion between localized free electrons, as well relaxation processes high‐density magnetic coupling at nanoscale. phenomena rarely observed micron‐scale or non‐hierarchical heterostructures. improvements lead significantly enhanced dielectric properties, efficient interaction with high‐frequency electromagnetic (EM) fields, indicated loss bandwidth covering full C‐band. Future work will explore constructing these targeted materials examine new such topological behavior, ferrimagnetism, giant magnetoresistance, sustainability optoelectronic technology.

Language: Английский

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Enhanced the diffusion kinetics and cycle stability of Li-rich layered materials by introducing the Li-O-Al configuration and robust Nb-O bonds

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 159630 - 159630

Published: Jan. 1, 2025

Language: Английский

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

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

Published: Feb. 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.

Language: Английский

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Defects-Induced Modification Strategy and Electrochemical Mechanisms of Ni3Fe-Based Electrode Materials

Acta Materialia, Journal Year: 2025, Volume and Issue: unknown, P. 121016 - 121016

Published: April 1, 2025

Language: Английский

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Microwave-assisted interfacial oxygen-bridge bonding for enhanced performance of MnO₂/CNT heterostructures in asymmetric supercapacitors

New Journal of Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Microwave-assisted interfacial oxygen-bridge confined MnO 2 /CNT heterostructures effectively enhance performance.

Language: Английский

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Porous nickel–cobalt phosphate with oxygen-rich vacancies in situ grown on dopamine-modified cellulose textiles as self-supporting high mass loadings supercapacitor electrode

Journal of Colloid and Interface Science, Journal Year: 2024, Volume and Issue: 677, P. 626 - 636

Published: Aug. 15, 2024

Language: Английский

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Synergistically engineering of amorphous-crystalline heterostructure and lattice defects on hierarchical NiCoSx/NF for efficient overall urea-assisted water splitting

International Journal of Hydrogen Energy, Journal Year: 2024, Volume and Issue: 92, P. 324 - 332

Published: Oct. 23, 2024

Language: Английский

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