Advanced Mg-based materials for energy storage: fundamental, progresses, challenges and perspectives

Progress in Materials Science, Journal Year: 2024, Volume and Issue: unknown, P. 101381 - 101381

Published: Oct. 1, 2024

Language: Английский

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Molecular Design of Imino Anion Acceptors Enables Long‐Life Fluoride Ion Batteries

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

Published: Jan. 12, 2025

Abstract Anion acceptors (AAs) enable to dissolve metal fluoride salts and achieve reversible fluorination defluorination in ion batteries (FIBs). However, most reported strategies only focus on boron‐ alcohol‐based AAs with strong Lewis acidity excessive hydrogen bond (HB) strength, which often leads the uncontrollable mass loss of active materials inferior reduction stability electrolyte. Although amino imine groups possess preferable anti‐reductive property, their HB strengths are apparently too weak dissociate salts. Here a novel strategy is proposed for molecular structure design toward imino by introducing double bonds pyridine‐N into five‐membered‐ring pyrrolidine. Therein conjugation effect, inductive α effect synergistically utilized enhance group. Theoretical calculations experiments prove that 1,2,4‐triazole AA retains maximum extent while increasing strength Based this AA, electrolyte achieves an unprecedented wide electrochemical window (5.5 V), enabling highly cycling CuF 2 ||Pb full cells (>300 cycles) Cu + ‐mediated two‐step redox mechanism, PbF ‐Pb||PbF ‐Pb symmetric (1600 h) low overpotential, asymmetric high coulombic efficiency.

Language: Английский

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A Reductive Environment‐Assisted Dealloying Approach for Hierarchical Porous Metals in Efficient Magnesium Metal Batteries

Batteries & Supercaps, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 7, 2025

Abstract This study introduces monolithic three‐dimensional nanoporous magnesium (3D‐NPMg) fabricated through a scalable solution‐based dealloying process as electrodes. By employing naphthalene‐based reductive environment, this approach forms hierarchically porous 3D structure with clean metallic surfaces, thereby forming free‐standing bicontinuous nanostructure. The resulting 3D‐NPMg addresses critical challenges in metal battery (MMB) anodes, including high polarization, dendritic growth, and limited cycling stability. Electrochemical performance tests show that exhibits lower overpotentials, improved charge‐transfer kinetics, significantly extended life. interconnected facilitates efficient ionic transport uniform Mg deposition, thus suppressing volume expansion reducing top‐plating during cycling. With its rapid oxidation‐minimizing synthesis, offers broad applications across various metals, which can advance the development of stable, high‐performance anodes for next‐generation MMBs.

Language: Английский

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Constructing MXene@ZIF-67 Core-shell Heterostructures on Mg Anodes for a High-performance Aqueous Mg Battery

Journal of Alloys and Compounds, Journal Year: 2025, Volume and Issue: unknown, P. 178899 - 178899

Published: Jan. 1, 2025

Language: Английский

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Bifunctional Synergistic Mg@SnSb SEI for Low Interfacial Reaction Energy Barriers and Stable Cycling of High‐Performance Rechargeable Magnesium Batteries

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

Published: Feb. 17, 2025

Abstract The formation of a stable passivation layer and the strong electrostatic interactions impede diffusion magnesium ions (Mg 2+ ) at Mg anode surface. Construction an artificial solid electrolyte interphase (SEI) presents promising approach to overcome these limitations. This study develops synergistic structurally Mg@SnSb SEI through in situ reaction between Tin trifluoromethanesulfonate antimony chloride (Sn(OTf) 2 ‐SbCl 3 ‐based) electrolyte, featuring low LUMO (lowest unoccupied molecular orbital). formed multi‐phase effectively reduces interfacial barriers facilitates during both plating stripping processes. Additionally, nano‐grained microstructure enhances uniformity plating/stripping suppresses decomposition OTf anions DME solvent molecules. incorporating exhibits exceptionally overpotential less than 0.07 V ultra‐long cycle life exceeding 1500 h. In full‐cell tests using Mg@SnSb||Mo 6 S 8 , system achieved exceptional electrochemical performance, maintaining over 94% its initial capacity after more 400 cycles.

Language: Английский

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Construction of Acceptor‐Multi‐F State Electrolyte to Enable Unprecedented Long‐Life and High‐Capacity Fluoride‐Ion Batteries

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

Published: Feb. 17, 2025

Abstract Fluoride ion batteries (FIBs) have garnered significant attention due to their ultrahigh theoretical energy density, dendrite‐free safety, and resource abundance. Although some anion acceptors been proposed address the insolubility of inorganic fluoride salts, difficulty in dissociating ions from results short lifespan extremely low specific capacity FIBs. Here, a battery is demonstrated with unprecedented long life through design an acceptor‐multi‐F state electrolyte. The high Lewis acidity triphenylantimony chloride (TSbCl) as novel acceptor electrolyte facilitates complete dissociation CsF, resulting TSbCl‐F complex can further interact form states. This strategy combines capability for salts minimal thermodynamic barriers releasing at electrode‐electrolyte interface. endows FIBs durable reversible fluorination/defluorination reaction (3700 cycles coulombic efficiency 99.5% small voltage polarization 30 mV) (580 mAh g −1 after 40 100 mA ). high‐output CuF 2 //Li configuration (with discharge plateau 2.9 V) larger‐sized pouch‐type //Sn+SnF 530 ) are demonstrated.

Language: Английский

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Chloride‐Free Electrolyte Regulated by Triphenyl‐Metallic Additive for Anti‐Passivated and Reversible Mg Metal Anodes

Advanced Sustainable Systems, Journal Year: 2025, Volume and Issue: unknown

Published: March 30, 2025

Abstract Rechargeable magnesium batteries (RMBs) have attracted extensive attention due to the high volumetric capacity and natural abundance of (Mg) metal anode. However, Mg anode in ether‐based electrolyte systems often suffers from surface passivation, leading irreversible plating/stripping behavior Mg. In this work, for first time, an effective strategy is proposed modify by situ alloy formation using a chlorine‐free organic compound, triphenyl bismuth (TPB). Through electrochemical reduction, Mg‐Bi forms uniformly on surface, providing abundant nucleation sites Mg, allowing smooth stable deposition suppressing occurrence short circuits. 1,2‐dimethoxyethane (DME)‐based system, addition TPB significantly improves performance anode, enabling cycling up 170 h at low overpotential. Similarly, tetraethylene glycol dimethyl ether (G4) excellent observed, achieving 240 h. This work confirms feasibility additives improve interface provides new possibilities enhancing practical applications RMBs.

Language: Английский

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Regulating the Interfacial Solvation Environment by a Pyran-Based Polymer for High-Areal-Capacity and Low-Temperature-Endurable Magnesium Metal Batteries

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

Published: April 22, 2025

Regulating the artificial solid electrolyte interphase (SEI) and interfacial solvation structure of is crucial for developing rechargeable magnesium batteries (RMBs) with long cycling life, high current density tolerance, fast ion transport capability operated under extreme environments, such as low temperatures. Herein, an effective strategy using oligomeric poly(3,4-dihydro-2H-pyran) (polyDHP) proposed to modulate RMBs, construction SEI rapid Mg-ion conductivity. The steric hindrance polyDHP its electrostatic interaction Mg2+ reduce solvent molecules in first shell, allowing participate coordination, thus lowering desolvation energy barrier facilitating their deposition stripping. Furthermore, due glass transition behavior, exhibits a more ordered continuous internal channels at -20 °C, therefore enabling stable RMB operation lower temperatures time. corresponding Mg symmetric cells display much overpotential (400 mV) excellent stability both room temperature (over 5000 h 5 mA cm-2 10 cm-2) °C 1300 3 cm-2). This supports CuS∥Mg full over 200 cycles °C. work reveals importance regulating structure, promoting realistic applications RMBs conditions.

Language: Английский

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Physical and chemical interfacial engineering of mg anodes for rechargeable magnesium batteries

Journal of Magnesium and Alloys, Journal Year: 2025, Volume and Issue: unknown

Published: April 1, 2025

Language: Английский

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In Situ Formation of a Bi/Mg‐Based Hybrid Interphase for Highly Reversible Magnesium Metal Anodes

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

Published: May 3, 2025

Abstract Magnesium (Mg) is a promising anode material for magnesium metal batteries (MMBs) owing to its high specific capacity, excellent safety profile, and abundant availability. However, pristine Mg anodes suffer from uneven plating/stripping surface passivation/corrosion, limiting the cycling stability of MMBs. This study introduces Bi/Mg‐based hybrid interphase protective layer on foil (denoted Bi‐Mg@Mg) through an in situ quasi‐solid–solid redox reaction by immersing bismuth oxybromide suspension. The resulting consists magnesiophilic components (Bi Bi 2 3 alloy) magnesiophobic species (MgO, MgBr , BiBr ). These synergistically enhance desolvation, nucleation, deposition kinetics, mitigate side reactions, promote uniform electric field ion flux distributions. As result, Bi‐Mg@Mg electrodes exhibit superior reversibility, maintaining stable performance over 4100 h all‐phenyl complex electrolyte 2900 Mg(TFSI) electrolyte, significantly outperforming electrodes. Furthermore, full cells paired with Mo 6 S 8 cathodes demonstrate capacities, rate capabilities, long lifespans, highlighting exceptional electrochemical anode. offers strategy developing highly reversible anodes, paving way practical long‐cycle

Language: Английский

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