Mechanical Grinding Formation of Highly Reversible (002)‐Textured Zinc Metal Anodes

Advanced Energy Materials, Год журнала: 2024, Номер unknown

Опубликована: Окт. 7, 2024

Abstract The practical applications of zinc metal anode are restricted by detrimental dendrite growth and hydrogen evolution reaction (HER), especially at high current densities. Previous works have demonstrated that constructing Zn(002) texture could effectively suppress HER. However, the surface grain distribution commercial remains indistinct. Herein, a simple mechanical grinding approach is to construct (002)‐textured anodes. After grinding, (002) relative coefficient increases from 10.58 42.28, indicating significant more planes exposure. As prepared exhibits critical density 141 mA cm −2 stably cycles for over 1500 50 1 mAh . Benefiting stability fast kinetics this anode, zinc‐ion capacitor achieves power 8500 W kg −1 long cycle 10 000 with Coulombic efficiency (CE) exceeding 99.9%. This work provides both fundamental insights dendrite‐free HER‐suppressed anodes inspiring guidance other batteries.

Язык: Английский

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Minimizing Zn Loss Through Dual Regulation for Reversible Zinc Anode Beyond 90% Utilization Ratio

Small, Год журнала: 2025, Номер unknown

Опубликована: Янв. 27, 2025

Abstract Large‐scale energy storage devices experience explosive development in response to the increasing crisis. Zinc ion batteries featuring low cost, high safe, and environment friendly are considered promising candidates for next‐generation devices. However, their practical application suffers from limited anode lifespan under a zinc utilization ratio, which can be attributed aggravated Zn loss caused by conversion reactions “dead” Zn. Herein, n‐propyl alcohol is reported stabilize depth of discharge through dual regulation water activity inhibition zinc‐ion plating regulation. The modified electrolyte exhibits 76.43% cut corrosion current benefited benefits SEI surface. content also reduced 26 times as result dendrite‐free plating. Thus, highly reversible plating/stripping with 99.62% CE achieved ≈3600 cycles. Moreover, Zn/Zn cells greatly increased even (310 h, 90%DOD 120 95.18% DOD). In Zn/NH 4 V O 10 full cells, improved reversibility enables remarkable capacity retention 92.16% after 400 cycles N/P ratio 2.5.

Язык: Английский

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Mechanism and Structural Defects of Zinc Film Deposited on a Copper Substrate: A Study via Molecular Dynamics Simulations

Coatings, Год журнала: 2025, Номер 15(2), С. 174 - 174

Опубликована: Фев. 4, 2025

Epitaxial growth can be used to guide the controllable of one metal on surface another substrate by matching interface lattice, thus improving dendrite tendency growth. The atomic arrangement Cu (111) crystal plane FCC structure is similar that Zn (0002) HCP structure, which theoretically expected promote heterogeneous epitaxial nucleation zinc under low strain. In this paper, molecular dynamics method simulate process film surface. It found behavior zinc-adsorbed atoms conforms mode. close-packed grown along direction layered clusters tiled surface, forming a highly ordered low-lattice-mismatch interface. When large area cover substrate, mode will change from heteroepitaxial homoepitaxial film, lamellar distribution composed and grains. Polycrystalline with planar preferred plane. increase in incident energy helpful quality films, while deposition rate, corresponding temperature electrolyte ion concentration, has no significant effect morphology single films. summary, strong guiding crystal, suitable for induce

Язык: Английский

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Amphiphilic Dodecanoic Monolayer Protects Zinc Anode from Water-Involved Side Reactions

Energy & Fuels, Год журнала: 2025, Номер unknown

Опубликована: Фев. 17, 2025

Язык: Английский

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Constructing Autoregulative Electric Double Layer Through Dielectric Effect Toward Fast Charging Zinc Metal Anode

Advanced Energy Materials, Год журнала: 2025, Номер unknown

Опубликована: Фев. 19, 2025

Abstract The inhomogeneous dendrite growth and parasitic side reactions of Zn anodes as well its sluggish solvation/de‐solvation kinetics severely hinder the practicalization fast charging Zn‐ion batteries. Regulating electric double layer (EDL) structure is an effective strategy to address these issues. Herein, a perovskite dielectric ZnTiO 3 (ZTO) designed on anode construct autoregulative EDL for achieving capability. ZTO can spontaneously generate surface charge with external voltage regulate structure, which results in increased/decreased capacitance under plating/stripping potential respectively, leading promoted 2+ rapid reaction kinetics. Meanwhile, H 2 O‐insufficient environment created by self‐regulated uniform field prevent during deposition process. Attributed feature, ZTO@Zn exhibits excellent cycle stability over 2850 h at 1 mA cm −2 symmetrical cells. Even high current density 50 , it still stable 230 h. Additionally, assembled ZTO@Zn//AC supercapacitor demonstrates ultralong lifetime 140 000 cycles 5 A g −1 . This work provides regulation realize capability metal practical application.

Язык: Английский

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Balancing Zn electrocrystallization kinetics and mass transport with appropriate electrolyte additive for Zn metal batteries

Nano Energy, Год журнала: 2025, Номер unknown, С. 110839 - 110839

Опубликована: Март 1, 2025

Язык: Английский

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Electrolyte Engineering Strategy with Catecholate Type Additive Enabled Ultradurable Zn Anode

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Апрель 3, 2025

Abstract Rechargeable aqueous zinc‐ion batteries (RAZBs), considered for grid‐level energy storage, have drawn intensive attention due to their intrinsic safety, earth abundance, and low cost of electrode materials. However, the practical application RAZBs is severely impeded by uncontrollable hydrogen evolution reaction, serious self‐corrosion, uneven zinc deposition. Herein, study proposes a multifunctional electrolyte additive form in situ protective layer on surface, providing buffering ability maintaining stable pH around anode/electrolyte interface thus inhibiting reaction. Additionally, modified Zn anode shows preferred orientation growth (101) plane, inheriting merits dense deposition morphology superior stability. Consequently, Zn||Zn symmetric cell demonstrates remarkable life span up 4000 h (1 mA cm −2 , 1 ) 1300 (5 ,1 ). After cycling over 1500 h, Zn||Cu half high coulombic efficiency nearly 100%, verifying extraordinary stripping/plating reversibility. The as‐assembled Zn||MnO 2 full battery good electrochemical characteristics, surpassing bare without additive. This investigation features facile yet effective strategy ultradurable design sheds light designing rechargeable metal batteries.

Язык: Английский

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Dimension-combined Zn anode coated with Cu for use in enhanced aqueous Zn-ion batteries

Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 162372 - 162372

Опубликована: Апрель 1, 2025

Язык: Английский

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Ultralow Concentration Zwitterionic Additives Enable Rapid Adsorption Equilibrium Promoting Long‐Life Aqueous Zinc‐Ion Battery

Small, Год журнала: 2025, Номер unknown

Опубликована: Апрель 8, 2025

Abstract Aqueous zinc‐ion batteries (AZIBs) face challenges in practical applications due to unstable electrode‐electrolyte interfaces and zinc dendrite growth. This study introduces an ultra‐low concentration (5 mmol L⁻¹) zwitterionic additive, Pyridinium‐1‐Propane‐3‐sulfonate (PPS), reconstruct the electric double layer (EDL) regulate surface reactions. Compared with structurally similar ionic additive N‐Butylsulfonicpyridinium (BSO 3 Py) imidazole‐based 3‐(1‐Methyl‐1H‐imidazol‐3‐ium‐3‐yl) propane‐1‐sulfonate (MPS), PPS exhibits superior parallel adsorption on zinc. Its dynamic adaptation Zn 2+ deposition achieves rapid equilibrium, optimizing active site utilization. Sulfonic acid groups form a robust interfacial through intermolecular interactions, while hydrophobic pyridine ring blocks water/sulfate contact. Symmetric achieved 700 hours of cycling at 20 mA cm⁻ 2 cumulative plating capacity exceeding 7000 mAh, alongside 99.81% Coulombic efficiency 5 . Zn‐VO full retained 247.46 mAh g⁻¹ after 1200 cycles A g⁻¹. engineering strategy provides scalable solution for stable AZIBs.

Язык: Английский

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Charge-Driven Flocculation Strategy for Lean-Water Quasi-Solid Electrolyte Enabling Stable Aqueous Zn Metal Batteries

Energy storage materials, Год журнала: 2025, Номер unknown, С. 104246 - 104246

Опубликована: Апрель 1, 2025

Язык: Английский

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