Highly Stable Aqueous Zn‐Ion Batteries Achieved by Suppressing the Active Component Loss in Vanadium‐Based Cathode

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

Published: Dec. 4, 2024

Abstract Aqueous zinc–ion batteries (AZIBs) hold significant promise for large‐scale energy storage due to their inherent safety and environmental benefits. However, practical application is often limited by rapid capacity loss from the dissolution of active cathode materials. Here, an effective strategy proposed suppress component doping high‐valence Sn 4+ in V 3 O 7 ·H 2 (Sn–V O) material achieve highly stable AZIBs. An impressive retention 89.3% over 6000 cycles at 5.0 A g −1 a high specific 408 mAh 0.1 are attained. The thermodynamically lowers formation Sn–V increases VO + ions, thereby reinforcing structural stability suppressing vanadium dissolution. Besides, enhances electrical conductivity broadens Zn 2+ diffusion channels, significantly accelerating intercalation deintercalation kinetics. experimental results integrated with mechanism analysis density functional theory calculation elucidate dynamics V‐based cathodes, employ X‐ray absorption spectroscopy reveal local electronic structures chemical valences during charge/discharge processes, providing comprehensive insights into high‐performance materials

Language: Английский

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Thermal management broadband emitting device based on VO2 applied in the mid infrared band

Dalton Transactions, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

This article designs a dynamic thermal emitter based on phase change material VO 2 . structure avoids emission loss at low temperatures and increases heat dissipation high temperatures.

Language: Английский

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Molecular Evolution of Target Organosulfur Enables High-Performance Aqueous Zinc Batteries

Journal of the American Chemical Society, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 2, 2025

Organic cathode materials for aqueous zinc-ion batteries (AZIBs) have garnered significant attention due to their environmental friendliness and structurally customizable nature. However, the low voltage, sluggish redox kinetics, high solubility of most n-type hinder wide deployment. To overcome these challenges, through molecular evolution, we rationally select a cheap industrial material, organodisulfide 2,2'-dithiobis (benzothiazole) (MBTS), as an material AZIBs. Due presence N-containing benzothiazole rings, dissociation energy sulfur-sulfur (S-S) bond is reduced, substantially enhancing discharge voltage improving reaction kinetics. They regulate π-conjugated plane achieve fast charge transfer. Moreover, density functional theory (DFT) calculations elucidate synergistic effect between adjacent active sites Zn2+ storage reactions, revealing that formation weak coordination bonds N Zn atoms (N-Zn-S bond) reduces product. Molecular evolution has led kinetics zinc ion storage, thus achieving performance under mass loading. At current 0.05 A g-1, MBTS exhibits average 1.02 V, with mere overpotential 100 mV, delivers specific capacity 153.6 mAh g-1. The assembled pouch cell demonstrates excellent rate capability 124.4 g-1 at 1 displays stable cycle life after 200 cycles 96.8% retention. Remarkably, maintains favorable stability various ultrahigh loadings, up 18.2 mg cm-2. findings provide substantial guidance practical applications organic electrode in

Language: Английский

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Research Progress on Cathode Materials for Aqueous Zinc-Ion Batteries

Advances in Analytical Chemistry, Journal Year: 2025, Volume and Issue: 15(01), P. 8 - 21

Published: Jan. 1, 2025

Language: Английский

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Enabling Fast and Stable Zinc-Ion Storage in Vanadyl Phosphate Cathodes

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

Published: Feb. 26, 2025

VOPO4·2H2O (VOP) has attracted significant attention as a cathode material for aqueous zinc-ion batteries owing to its layered structure and high-voltage plateau. However, application is hindered by sluggish Zn2+ transport kinetics instability in electrolytes, leading rapid capacity fading over cycling. In the present work, diethylene glycol (DEG) pre-intercalated VOP (DEG-VOP) with flower-like morphology prepared facile hydrothermal method. The DEG molecules enlarge interplanar lattice of (001) plane introduce oxygen vacancies, accelerating mass charge transfer kinetics. addition, pre-intercalation induces self-assembly nanosheets into structure, which exposes more (201) planes, providing additional ion channels. also enhances hydrophobicity VOP, effectively suppressing decomposition dissolution. These result significantly improved discharge capacity, retention 86% after 2000 cycles at 1 A g–1.

Language: Английский

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Two-dimensional nanostructures of transition metal-based materials towards aqueous electrochemical energy storage

Chemical Communications, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

This feature article summarizes the recent developments and challenges in two-dimensional nanostructures of transition metal-based materials towards aqueous electrochemical energy storage including zinc-ion batteries supercapacitors.

Language: Английский

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Representative By‐Products of Aqueous Zinc‐Vanadium Batteries: Origins, Roles, Strategies, and Prospects

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

Published: March 3, 2025

Abstract Aqueous zinc‐ion batteries (AZIBs) are of interest in next‐generation energy storage applications owing to their safety, environmental friendliness, and cost‐effectiveness. Vanadium‐based oxides promising cathodes for AZIBs due appropriate structure multielectron redox processes. Although hundreds studies devoted understanding the mechanisms developing high‐performance vanadium‐based cathodes, many puzzles controversies still exist, especially regarding two representative by‐products, basic zinc salt (BZS) pyrovanadate (ZVO). BZS ZVO often observed on cathode anode during cycling, directly affecting battery performance. However, by‐products’ controversial unclassified insights unclear have severely limited Zn‐V batteries’ progress. Therefore, this review aims exhaustively elucidate “past present” by‐products following a logical sequence origin, role, inhibition strategy, prospect. Notably, incorporates substantial comments understandings long‐neglected issues related BZS‐related ZVO‐related dissolution mechanisms. This is expected provide scientific guidelines future optimization commercialization batteries.

Language: Английский

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Superior Cycling Stability in Zinc‐Ion Batteries with Ca²⁺‐Induced Cathode‐Electrolyte Interface and Phytic Acid: Experimental Validation of Theoretical Predictions

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

Published: March 24, 2025

This study investigates the impact of Ca2+ and phytic acid (PA) pre-insertion on performance vanadium oxide (V6O13) as a cathode material for aqueous zinc-ion batteries. Ab initio molecular dynamics (AIMD) simulations reveal that diffusion coefficient Ca2⁺ is higher than Zn2+, leading to preferential extraction Ca2⁺. The extracted readily forms dense cathode-electrolyte interphase (CEI) with SO₄2 - electrode surface, effectively mitigating dissolution. Furthermore, density functional theory (DFT) calculations indicate incorporation lowers energy barrier Zn2⁺, facilitating its diffusion. Additionally, PA insertion stabilizes interlayer spacing V6O13, strong chelating ability structure by preventing collapse during cycling. Experimental validation through one-step solvothermal method confirms these theoretical predictions. CaVO-PA composite exhibits excellent cycling stability, capacity retention rate increasing from 60% 102% after 3000 cycles at 10 A g-¹. Even 20 g-¹, it delivers specific 170.2 mAh g-¹ stable Coulombic efficiency. After 000 cycles, shows no significant degradation, demonstrating superior stability high current tolerance, thereby confirming effectiveness CEI in enhancing electrochemical performance.

Language: Английский

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High-performance F, Mn co-doped VO2(B) cathode material in the form of multilayered nanosheets curled rods and its aqueous zinc ion battery applications

Chemical Engineering Science, Journal Year: 2025, Volume and Issue: unknown, P. 121627 - 121627

Published: April 1, 2025

Language: Английский

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Construction of VOOH/rGO Heterojunction as High‐performance Cathode for Aqueous Zn‐ion Batteries

ChemistrySelect, Journal Year: 2025, Volume and Issue: 10(15)

Published: April 1, 2025

Abstract Aqueous Zn‐ion batteries (AZIBs) are considered a promising energy storage device due to cost‐effectiveness, high safety, and theoretical capacities. However, the low reaction kinetics, electron transfer rates, density cathode materials hinder their practical application on large scale. In this study, layered VOOH reduced graphene oxide composites (VOOH/rGO) were synthesized by hydrothermal method. The design of VOOH/rGO heterojunction could generate built‐in electric field accelerate enhance its overall electrical conductivity. Moreover, enhanced adsorption Zn 2+ heterointerfaces is beneficial stimulate fast kinetics. And existence defects creates rich diffusion channels that expedite migration while providing active sites for storage, as reflected impressive electrochemical performance exhibits specific capacity 189 mA h g −1 after 280 cycles at current 1 A . Additionally, it showcases excellent rate with 225 2 , delivers 104 1000 cycles. All results indicate holds significant potential electrode high‐performance AZIBs.

Language: Английский

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