Multifunctional Zinc Vanadium Oxide Layer on Metal Anodes Via Ultrathin Surface Coating for Enhanced Stability in Aqueous Zinc-Ion Batteries

ACS Energy Letters, Journal Year: 2024, Volume and Issue: unknown, P. 5955 - 5965

Published: Nov. 21, 2024

An ultrathin zinc vanadium oxide (ZVO) layer is introduced onto a Zn anode surface using surface-coating method. This ZVO shown to inhibit corrosion of the and promote uniform deposition. Consequently, ZVO-coated (ZVO@Zn) significantly enhances performance stability ion batteries (ZIBs), demonstrating long-term cycling for 1000 h in symmetric cell at 2 mA cm–2. Additionally, ZVO@Zn||MnO2 shows improved capacity retention rate capabilities full-cell tests. The achieves specific capacities 227.3 131.8 mAh g–1 0.3 C, respectively, compared those bare Zn||MnO2 cell. Furthermore, demonstrates relatively stable without significant initial decay, thereby indicating its enhanced performance. work presents promising approach accelerating development enhancing reliability ZIBs.

Language: Английский

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Strategically Modulating Proton Activity and Electric Double Layer Adsorption for Innovative All‐Vanadium Aqueous Mn²⁺/Proton Hybrid Batteries

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(41)

Published: Aug. 17, 2024

Abstract Aqueous Mn‐ion batteries (MIBs) exhibit a promising development potential due to their cost‐effectiveness, high safety, and for energy density. However, the of MIBs is hindered by lack electrode materials capable storing Mn 2+ ions acidic manganese salt electrolytes large ion radius. Herein, tunnel‐type structure monoclinic VO 2 nanorods effectively store via reversible (de)insertion chemistry first time reported. Utilizing exhaustive in situ/ex situ multi‐scale characterization techniques theoretical calculations, co‐insertion process /proton revealed, elucidating capacity decay mechanism wherein proton activity leads irreversible dissolution loss vanadium species. Further, Grotthuss transfer protons broken hydrogen bond reconstruction strategy while achieving modulation electric double‐layer structure, which suppresses interface activity. Consequently, demonstrates excellent electrochemical performance at both ambient temperatures −20 °C, especially maintaining 162 mAh g −1 5 A after record‐breaking 20 000 cycles. Notably, all‐vanadium symmetric pouch cells are successfully assembled based on “rocking‐chair” hybrid mechanism, demonstrating practical application potential.

Language: Английский

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Multi‐N‐Heterocycle Donor‐Acceptor Conjugated Amphoteric Organic Superstructures for Superior Zinc Batteries

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 5, 2024

Abstract Multiple redox‐active amphoteric organics with more n‐p fused electron transfer is an ongoing pursuit for superior zinc–organic batteries (ZOBs). Here we report multi‐heterocycle‐site donor‐acceptor conjugated organic superstructures (AOSs) by integrating three‐electron‐accepting n‐type triazine motifs and dual‐electron‐donating p‐type piperazine units via H‐bonding π–π stacking. AOSs expose flower‐shaped N‐heteromacrocyclic delocalization topologies to promise full accessibility of built‐in ultralow activation energy, thus liberating capacity (465 mAh g −1 ) Zn||AOSs battery. More importantly, the extended multiple donor‐acceptor‐fused feature satisfied discharge voltage anti‐dissolution in electrolytes, pushing both energy density cycle life ZOBs a new level (412 Wh kg 70,000 cycles@10 A ). An anion–cation hybrid 18 e − charge storage mechanism rationalized heteromacrocyclic modules cathode, entailing six tert‐N coupling CF 3 SO ions at high potential twelve imine sites coordinating Zn 2+ low potential. These findings constitute major advance multielectron materials stand good starting point advanced ZOBs.

Language: Английский

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Carboxymethylcellulose Induced the Formation of Amorphous MnO₂ Nanosheets With Abundant Oxygen Vacancies for Fast Ion Diffusion in Aqueous Zinc‐Ion Batteries

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

Published: Sept. 29, 2024

Abstract Manganese dioxide with high theoretical capacity has drawn a great deal of attention for aqueous zinc‐ion batteries (ZIBs). Nevertheless, their sluggish diffusion kinetics, low electrical conductivity and limited active sites are still hindering the potential application in batteries. Herein, amorphous MnO 2 nanosheets abundant oxygen vacancies facilely prepared by using carboxymethylcellulose sodium (CMC) as capping agent. During growth process, CMC can preferentially attach to (003) facet guide its crystal morphology. The small expose edge sites, along surface vacancies, facilitate insertion/extraction H + Zn 2+ ZIBs. Moreover, presence stabilize Mn 3+ inhibit Jahn–Teller effect preparation process. As result, CMC‐MnO based ZIB provide specific 324 mAh g −1 at 0.5 A , achieve 86.2% retention after long cycle test 1000 cycles. Furthermore, energy storage mechanism may be attributed /Zn dissolution/deposition 4 SO (OH) 6 ·nH O, irreversible transformation vermiculite during This work open new perspectives development ‐based cathodes

Language: Английский

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Artificial aluminum-doped SiO2 aerogel coating layer regulating zinc ions flow for highly reversible dendrite-free zinc anodes

Electrochimica Acta, Journal Year: 2024, Volume and Issue: 501, P. 144799 - 144799

Published: July 31, 2024

Language: Английский

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Advancing Anode Performance in Aqueous Zinc‐Ion Batteries: A Review of Metal‐Organic Framework‐Based Strategies

ChemSusChem, Journal Year: 2024, Volume and Issue: unknown

Published: Aug. 1, 2024

Abstract Aqueous zinc‐ion batteries (AZIBs) are garnering substantial research interest in electric vehicles, energy storage systems, and portable electronics, primarily for the reason that inexpensive cost, high theoretical specific capacity, environmental sustainability of zinc metal anodes, which an essential component to their design. Nonetheless, progress AZIBs is hindered by significant obstacles, such as occurrence anodic side reactions (SR) formation dendrites. Metal‐organic framework (MOF)‐based materials being explored promising alternatives owing homogeneous porous structure large surface areas. There has been a rare overview discussion on strategies protecting anodes using MOF‐based materials. This review specifically aims investigate cutting‐edge design highly stable AZIBs. Firstly, mechanisms dendrites SR summarized. Secondly, recent advances protection including those pristine MOFs, MOF composites, derivatives reviewed. Furthermore, involving anode stabilization presented, engineering coatings, three‐dimensional structures, artificial solid electrolyte interfaces, separators, electrolytes. Finally, ongoing challenges prospective directions further enhancement technologies highlighted.

Language: Английский

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Ion Redistribution Gel Electrolyte Dissipates Interfacial Turbulence for Aqueous Zinc‐Ion Batteries

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

Published: Dec. 6, 2024

Abstract Aqueous zinc‐ion batteries (AZBs) degrade under a high current density due to the existence of interfacial turbulence with severe concentration polarization. Herein, an ion redistribution gel electrolyte is introduced stabilize electrode‐electrolyte interface by regulating gradient. Negatively charged carboxymethyl groups in starch ether polymer (PCMS) electrolytes can preferentially regulate at anode interface. The quasi‐solid PCMS dissipate charge accumulation caused differences, which beneficial for achieving excellent electrochemical stability densities. As result, symmetric Zn cells be cycled more than 2000 h 40 mA cm −2 . Furthermore, Zn//I 2 cell using also sustained cycling over 8000 cycles, and pouch exhibited practical deformable applications flexible devices. This work highlights effective approach enhancing stability, potentially advancing development highly reversible AZBs.

Language: Английский

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Electrolyte Decoupling Strategy for Metal Oxide‐Based Zinc‐ion Batteries Free of Crosstalk Effect

Angewandte Chemie International Edition, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 4, 2025

Abstract The crosstalk of transition metal ions between the oxide cathode and Zn anode restricts practical applications aqueous zinc‐ion batteries (ZIBs). Herein, we propose a decoupled electrolyte (DCE) consisting nonaqueous‐phase (N‐phase) anolyte an aqueous‐phase (A‐phase) catholyte to prevent Mn 2+ , thus extending lifespan MnO 2 ‐based ZIBs. Experimental measurements theoretical modelling verify that trimethyl phosphate (TMP) not only synergistically works with NH 4 Cl in N‐phase enable fast conduction while blocking diffusion toward anode, but also modifies solvation structure suppress dendrite formation corrosion on anode. Meanwhile, A‐phase effectively accelerates reaction kinetics. as‐developed Zn|DCE|MnO cell delivers 80.13 % capacity retention after 900 cycles at 0.5 A g −1 . This approach is applicable for other cathode‐based ZIBs, thereby opening new avenue developing ultrastable

Language: Английский

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Anode‐Free Zinc–Bromine Batteries Enabled by a Simple Prenucleation Strategy

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

Published: Jan. 19, 2025

Abstract The design of anode‐free zinc (Zn) batteries with high reversibility at areal capacity has received significant attention recently, which is quietly challenging yet. Here, a Zn alloyed interface through electroplating introduced, providing homogeneous prenucleation sites to stabilize subsequent nucleation and plating. By employing Zn–Cu alloy as module, the complementary simulations characterizations confirm that interfaces achieve electric field distribution greatly enhance stability anode. Accordingly, Zn//Zn–Cu@Cu half‐cells show long cycle life over 900 h an average Coulombic efficiency (CE) 99.8% 10 mAh cm −2 . assembled zinc–bromine (Zn–Br 2 ) battery exhibits attractive stable cycling 11 000 cycles 1 , while 1000 higher Excitingly, Zn–Br pouch cell operates stably 50 cycles, achieves successful integration photovoltaic systems. This constructed strategy offer new insights into potential for large‐scale energy storage applications.

Language: Английский

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Cerium-doped Mn₂O₃ microspheres: a high-performance cathode material for aqueous zinc-ion batteries

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

Published: Jan. 1, 2025

Aqueous zinc-ion batteries (AZIBs) have received considerable attention due to their advantages of being safe, environmentally friendly, and cost-effective.

Language: Английский

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