Recent Advances in High‐Entropy Layered Oxide Cathode Materials for Alkali Metal‐Ion Batteries

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

Published: Oct. 29, 2024

Abstract Since the electrochemical de/intercalation behavior is first detected in 1980, layered oxides have become most promising cathode material for alkali metal‐ion batteries (Li + /Na /K ; AMIBs) owing to their facile synthesis and excellent theoretical capacities. However, inherent drawbacks of unstable structural evolution sluggish diffusion kinetics deteriorate performance, limiting further large‐scale applications. To solve these issues, novel strategy high entropy has been widely applied oxide cathodes AMIBs recent years. Through multielement synergy stabilization effects, high‐entropy (HELOs) can achieve adjustable activity enhanced stability. Herein, basic concepts, design principles, methods HELO are introduced systematically. Notably, it explores detail improvements on limitations oxides, highlighting latest advances materials field AMIBs. In addition, introduces advanced characterization calculations HELOs proposes potential future research directions optimization strategies, providing inspiration researchers develop areas energy storage conversion.

Language: Английский

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Recent advances in potassium metal batteries: electrodes, interfaces and electrolytes

Chemical Society Reviews, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

This review explores the latest advancements in potassium metal batteries, including electrode design, interface engineering, and electrolyte optimization to suppress dendrite formation enhance cycling stability.

Language: Английский

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Progress of 0D Biomass-Derived porous carbon materials produced by hydrothermal assisted synthesis for Advanced supercapacitors

Journal of Colloid and Interface Science, Journal Year: 2025, Volume and Issue: 685, P. 487 - 508

Published: Jan. 21, 2025

Language: Английский

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Magnetopyrite Fe1−xS modified with N/S-doped carbon as a synergistic electrocatalyst for lithium-sulfur batteries

Journal of Colloid and Interface Science, Journal Year: 2025, Volume and Issue: 684, P. 180 - 191

Published: Jan. 7, 2025

Language: Английский

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Boosting ultralong lifespan of Fe-based Prussian blue analogs cathode via element doping and crystal water capture

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 160997 - 160997

Published: Feb. 1, 2025

Language: Английский

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Flexible Potassium-Ion Batteries Enabled by Encapsulating Hollow NiSe/SnSe Nanocubes within Freestanding N-doped Carbon Nanofibers

Energy storage materials, Journal Year: 2024, Volume and Issue: 74, P. 103908 - 103908

Published: Nov. 14, 2024

Language: Английский

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Entropy and Electronic Structure Modulation of a Prussian Blue Analogue Cathode with Suppressed Phase Evolution for Potassium-Ion Batteries

Nano Letters, Journal Year: 2024, Volume and Issue: 24(47), P. 15167 - 15177

Published: Nov. 14, 2024

Severe structural evolution and high content of [Fe(CN)6]4– defects drastically deteriorate K-ion storage performances Prussian blue-based cathodes. Herein, a potassium manganese iron copper hexacyanoferrate (KFe2/3Mn1/6Cu1/6HCF), with suppressed anionic vacancies, eliminated band gap, low diffusion barrier, is regarded as cathode for potassium-ion batteries. The entropy stabilization effect robust Cu–N bond induced by the inert Cu-ion large electronegativity boost KFe2/3Mn1/6Cu1/6HCF to exhibit great phase state stability, thus inhibiting transition monoclinic ↔ cubic. Hence, undergoes zero-stress solid-solution reaction mechanism, where Fe Mn serve dual active sites charge compensation. Consequently, displays reversible capacity 127.5 mAh·g–1 an energy density 469.2 Wh·kg–1 at 10 mA·g–1 superior cyclic stability retention 90.7% over 100 cycles. A high-energy-density full battery assembled, contributing ultralong lifetime 1000 cycles low-capacity fading rate 0.038% per cycle.

Language: Английский

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High-Entropy and Na-Rich-Designed High-Energy-Density Na₃V₂(PO₄)₃/C Cathode

ACS Nano, Journal Year: 2024, Volume and Issue: 18(52), P. 35632 - 35643

Published: Dec. 19, 2024

The Na3V2(PO4)3 (NVP) cathode holds the merit of a stable 3D NASICON structure for ultrafast Na+ diffusion, yet it is still confronted with poor electronic conductivity (10–9 S cm–1) and insufficient energy density (∼370 W h kg–1). Herein, series high-entropy-doped Na3+xV1.76–xZnx(GaCrAlIn)0.06(PO4)3 (x = 0, 0.2, 0.35, 0.5) cathodes are systematically prepared an activated V5+⇌V4+ high-voltage plateau (4.0 V) elevated discharge capacity, which derived from charge compensation divalent Zn substituting trivalent V accompanied by extra input to create Na-rich phase. A range in situ/ex situ characterization studies DFT calculations radically verify conservation mechanism, enhanced bulk conductivity, robust structural stability. Accordingly, half-cells, optimized 0.35) capable giving much-improved capacity (126.8 mA g–1), reliable cycling stability (97.4%@5000 cycles@40 C), competitive (426.1 kg–1) at 2.0–4.3 V. Upon reducing cutoff voltage 1.4 V, three-electron reaction (V5+⇌V2+) entirely superior stability, delivering unparalleled 193.4 g–1 higher (544.3 Besides, displays high (126.1 g–1) (417.2 NVPZGCAI-35//hard carbon full-cells 1.6–4.1 Hence, this pioneering high-entropy strategy above rubies developing high-energy-density high-stability sodium-ion batteries.

Language: Английский

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Sodium-Rich Prussian Blue Analogs Synthesized with Reducing Sodium Salt for Enhanced Rate and Cycling Stability Sodium-Ion Storage

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 23, 2025

Prussian blue analogs (PBAs) as cathode material for sodium-ion batteries have attracted widespread attention due to their affordability, simple synthesis, and high theoretical capacity. Nevertheless, the oxidation of Fe2+ sodium loss lead poor electrochemical properties which restrict practical use PBAs. Herein, a coprecipitation approach based on salt-reduction-assisted synthesis was proposed construct high-sodium The bisulfite (NaHSO3) not only effectively inhibits but also increases mole ratio Na+ in resulting products. optimized sample exhibits excellent specific capacity (131.1 mAh g-1 at 0.1C), rate performance (103.9 10C), good cyclic (94.8% retention after 200 cycles). Experimental results reveal that synthesized with possesses improved diffusion kinetics stable crystal structure. In this study, scalable method is introduced PBAs further applications.

Language: Английский

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Activation of Semiconductor/Electrocatalyst/Electrolyte Interfaces Through Ligand Engineering for Boosting Photoelectrochemical Water Splitting

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

Published: March 5, 2025

Abstract The loading of transition‐metal oxyhydroxide (TMOH) on semiconductor (SC) has been recognized as a promising approach for promoting photoelectrochemical (PEC) water splitting. Nonetheless, major challenges such substantial carrier recombination and slow surface oxidation continue to hinder the achievement desirable PEC performance. This study proposes feasible ligand engineering strategy simultaneously boost charge separation catalytic kinetics through coordinating 2‐methylimidazole (2‐MI) within SC/TMOH system. In situ ultraviolet/visible spectroelectrochemistry (UV/vis‐SEC) density functional theory (DFT) calculations show that coordination 2‐MI influences TMOH/electrolyte interfaces, notably enhancing dynamics hole transfer while reducing adsorption oxygen‐containing intermediates. As anticipated, BiVO 4 /FeNiOOH/2‐MI photoanode demonstrates an impressive photocurrent 6.52 mA cm −2 at 1.23 V RHE , featuring excellent photostability low onset potential 0.35 . Additionally, molecule can be employed in development alternative configurations, /FeNiOOH (soak)/2‐MI, improve efficiency. work opens new horizon designing photoanodes efficient stable

Language: Английский

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