Stabling Zinc Metal Anode with Polydopamine Regulation through Dual Effects of Fast Desolvation and Ion Confinement

Advanced Energy Materials, Journal Year: 2022, Volume and Issue: 13(5)

Published: Dec. 13, 2022

Abstract Metal zinc is recognized as a promising anode candidate for aqueous zinc‐ion batteries (AZIBs), however, dendrites and byproducts formation severe deteriorate its reversibility practical lifespan. Herein, polydopamine (PDA) layer, which offers the dual effects of fast desolvation ion confinement, constructed on surface Zn efficient AZIBs. The abundant polar functional groups in PDA significantly enhance interfacial contact media, reduces number water molecules reaching through desolvation, thus lowering energy barrier 2+ migration. Furthermore, porous coating controls flux via ion‐confinement effect, thereby accelerating kinetics surface. Consequently, Zn@PDA exhibits improved deposition (nucleation potential only 32.6 mV vs 50.2 bare Zn) compared with at 2.0 mA cm −2 , dendrite‐free negligible byproduct formation. When paired MnO 2 cathode, Zn@PDA//MnO cell delivers high discharge capacity long cycle stability without significant performance deterioration over 1000 cycles 1.0 A g −1 . Additionally, demonstrates excellent shelving‐restoring performance.

Language: Английский

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Engineering a self-adaptive electric double layer on both electrodes for high-performance zinc metal batteries

Energy & Environmental Science, Journal Year: 2022, Volume and Issue: 15(11), P. 4748 - 4760

Published: Jan. 1, 2022

A zwitterionic ionic liquid additive enables a high-performance aqueous Zn metal battery via constructing self-adaptive electric double layer for both electrodes.

Language: Английский

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Building Metal‐Molecule Interface towards Stable and Reversible Zn Metal Anodes for Aqueous Rechargeable Zinc Batteries

Advanced Functional Materials, Journal Year: 2022, Volume and Issue: 32(47)

Published: Sept. 16, 2022

Abstract Aqueous zinc ion batteries (AZIBs) are receiving increasing attention for large‐scale energy storage systems owing to their appealing features with intrinsic safety, low cost, and scalability. Unfortunately, the water‐induced parasitic reactions dendrite growth on Zn anode severely impede further development of AZIBs. Herein, a thiourea additive is introduced into ZnSO 4 electrolyte construct unique metal‐molecule interface simultaneously regulating chemistry bulk environment. Experimental results theoretical calculations reveal that formed can not only serve as corrosion inhibitor alleviating side reactions, but also act 2+ regulator promoting homogenous deposition, thus achieving corrosion‐free dendrite‐free anode. Consequently, Zn|Zn symmetric cell exhibits an extended lifespan 1200 h at 1 mA cm –2 , 1mAh high cumulative capacity 3000 mAh 10 . When paired V 2 O 5 cathode, Zn|V full delivers retention 76.0% after 1000 cycles A g –1 This study paves new way modulate electrode by novel design advanced rechargeable metal beyond.

Language: Английский

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Progress in interface structure and modification of zinc anode for aqueous batteries

Nano Energy, Journal Year: 2022, Volume and Issue: 98, P. 107333 - 107333

Published: May 4, 2022

Language: Английский

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Ordered Mesoporous Carbon Grafted MXene Catalytic Heterostructure as Li-Ion Kinetic Pump toward High-Efficient Sulfur/Sulfide Conversions for Li–S Battery

ACS Nano, Journal Year: 2023, Volume and Issue: 17(2), P. 1653 - 1662

Published: Jan. 6, 2023

Lithium–sulfur (Li–S) batteries exhibit unparalleled theoretical capacity and energy density than conventional lithium ion batteries, but they are hindered by the dissatisfactory "shuttle effect" sluggish conversion kinetics owing to low transport kinetics, resulting in rapid fading. Herein, a catalytic two-dimensional heterostructure composite is prepared evenly grafting mesoporous carbon on MXene nanosheet (denoted as OMC-g-MXene), serving interfacial kinetic accelerators Li–S batteries. In this design, grafted can not only prevent stack of nanosheets with enhanced mechanical property also offer facilitated pump for accelerating diffusion. Meanwhile, exposed defect-rich OMC-g-MXene inhibits polysulfide shuttling chemical interactions between polysulfides thus simultaneously enhances electrochemical efficiency, fully investigated situ/ex situ characterizations. Consequently, cells pumps achieve high cycling (966 mAh g–1 at 0.2 C after 200 cycles), superior rate performance (537 5 C), an ultralow decaying 0.047% per cycle 800 cycles 1 C. Even employed sulfur loading 7.08 mg cm–2 under lean electrolyte, ultrahigh areal 4.5 acquired, demonstrating future practical application.

Language: Английский

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Highly Reversible Zn Metal Anodes Enabled by Freestanding, Lightweight, and Zincophilic MXene/Nanoporous Oxide Heterostructure Engineered Separator for Flexible Zn-MnO₂ Batteries

ACS Nano, Journal Year: 2022, Volume and Issue: 16(4), P. 6755 - 6770

Published: March 31, 2022

Aqueous zinc (Zn)-ion batteries are regarded as promising candidates for large-scale energy storage systems because of their high safety, low cost, and environmental benignity. However, the dendrite issue Zn anode hinders practical application. Herein, a freestanding, lightweight, zincophilic MXene/nanoporous oxide heterostructure engineered separator is designed to stabilize metal anode. The nanoporous oxides prepared by one-step vacuum distillation technique afford advantages large surface area, porosity, homogeneous porous structure. MXene@oxides layer can homogenize electric field distribution, facilitate ion diffusion kinetics, reduce local current density, promote even ionic flux, which will regulate uniform deposition suppress side reactions. Accordingly, dendrite-free anodes with stable cyclability achieved over 500 h at an ultrahigh area capacity 10 mAh cm-2. Besides, flexible, long-lifespan, high-rate N/S-doped three-dimensional MXene@MnO2||Zn full cells constructed separator. Moreover, this strategy be successfully extended lithium, sodium, potassium, magnesium batteries, indicating that regulation universal approach overcome challenges batteries.

Language: Английский

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Achieving Stable Zinc Metal Anode Via Polyaniline Interface Regulation of Zn Ion Flux and Desolvation

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 34(5)

Published: Feb. 23, 2023

Abstract Aqueous zinc‐ion batteries feature high safety, low cost, and relatively energy density; however, their cycle life is hindered by severe Zn dendrite formation water‐induced parasitic reactions. Herein, a porous polyaniline (PANI) interfacial layer developed on the surface of metal anode to regulate transport deposition 2+ , achieving an ultra‐stable highly reversible anode. Specifically, abundant polar groups (NH N) in PANI have strong attraction H 2 O, which can trap immobilize O molecules around . Moreover, protective regulates ion flux behavior through confinement effect. Consequently, Zn@PANI exhibits improved plating/stripping with nucleation overpotential (37.9 mV) at 2.0 mA cm ‐2 compared that bare The MnO //Zn@PANI cell demonstrates capacity retention 94.3% after 1000 cycles 1.0 A g −1 This study lays foundation for accessible interface engineering in‐depth mechanistic analysis

Language: Английский

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Aqueous zinc-ion batteries at extreme temperature: Mechanisms, challenges, and strategies

Energy storage materials, Journal Year: 2022, Volume and Issue: 51, P. 683 - 718

Published: July 5, 2022

Language: Английский

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Ionic liquid additive enabling anti-freezing aqueous electrolyte and dendrite-free Zn metal electrode with organic/inorganic hybrid solid electrolyte interphase layer

Energy storage materials, Journal Year: 2022, Volume and Issue: 53, P. 629 - 637

Published: Oct. 6, 2022

Language: Английский

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Simultaneously Stabilizing Both Electrodes and Electrolytes by a Self‐Separating Organometallics Interface for High‐Performance Zinc‐Ion Batteries at Wide Temperatures

Advanced Materials, Journal Year: 2022, Volume and Issue: 34(49)

Published: Oct. 18, 2022

Rechargeable aqueous zinc-ion batteries are of great potential as one the next-generation energy-storage devices due to their low cost and high safety. However, development long-term stable electrodes electrolytes still suffers from challenges. Herein, a self-separation strategy is developed for an interface layer design optimize both simultaneously. Specifically, coating with organometallics (sodium tricyanomethanide) evolves into electrically responsive shield composed nitrogen, carbon-enriched polymer network, sodium ions, which not only modulates migration pathways inhibit side reactions but also adsorbs onto Zn perturbations induce planar zinc deposition. Additionally, separated ions can diffuse electrolyte affect Zn2+ solvation structure maintain cathode structural stability by forming cathode-electrolyte ions' equilibrium, confirmed in situ spectroscopy electrochemical analysis. Due these unique advantages, symmetric exhibit extralong cycling lifespan 3000 h rate performance at 20 mA cm-2 wide temperatures. The efficiency further demonstrated practical full ultralong over 10 000 cycles -35 60 °C.

Language: Английский

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