Synergistic Cooperation of Zn(002) Texture and Amorphous Zinc Phosphate for Dendrite-Free Zn Anodes

ACS Nano, Год журнала: 2023, Номер 17(15), С. 15113 - 15124

Опубликована: Июль 27, 2023

Zn anodes of aqueous metal batteries face challenges from dendrite growth and side reactions. Building Zn(002) texture mitigates the issues but does not eradicate them. still faces severe corrosive electrolytes growth, especially after hundreds cycles. Therefore, it is necessary to have a passivation layer covering Zn(002). Here, surface coating are achieved on foils by an one-step annealing process, as demonstrated ZnS, ZnSe, ZnF2, Zn3(PO4)2 (ZPO), etc. Using ZPO model, coupling between illustrated in terms dendrite-suppressing ability diffusion energy barrier Zn2+. The modified (Zn(002)@ZPO) exhibit excellent electrochemical performance, far superior or alone. In full cells, performance greatly improved even under harsh conditions, i.e., high areal capacity limited resource. This work achieves crystal engineering simultaneously discloses in-depth insights about synergy orientation layers.

Язык: Английский

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Dextran: A Multifunctional and Universal Electrolyte Additive for Aqueous Zn Ion Batteries

Advanced Energy Materials, Год журнала: 2023, Номер 13(37)

Опубликована: Авг. 13, 2023

Abstract The aqueous Zn ion battery (ZIB) is a potentially sustainable energy storage device. However, its performance still far from satisfactory. Herein, it demonstrated that branched sugar, dextran, widely used in eyedrop products to relieve irritated eyes, multifunctional and universal electrolyte additive enable high‐performance ZIBs. Experimental theoretical results reveal dextran has four functions: forming surface protective layer minimize side reactions, facilitating stepwise [Zn(H 2 O) 6 ] 2+ desolvation, preferably adsorbing on Zn(0002) planes supply desolvated homogenizing electric field. These functions are universally observed Zn(CF 3 SO ) , ZnSO 4 Zn(ClO ZnCl electrolytes. As demonstrations for practical applications, anodes deliver Coulombic efficiency of 99.97% after 3400 cycles an with 50 mg mL ‒1 cumulative plating capacity mAh cm ‒2 at 5 mA . Zn//V O full cells low negative/positive electrode ratio 2.18 can be stably cycled over 138 1 A g Pouch work under mechanical bending conditions. Zn//polyaniline cycle steadily 3000 0.5 −10 °C. Dextran shows excellent potential as low‐cost non‐toxic safe reliable

Язык: Английский

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Synergistic Modulation of In‐Situ Hybrid Interface Construction and pH Buffering Enabled Ultra‐Stable Zinc Anode at High Current Density and Areal Capacity

Angewandte Chemie International Edition, Год журнала: 2023, Номер 62(45)

Опубликована: Сен. 25, 2023

In aqueous electrolytes, the uncontrollable interfacial evolution caused by a series of factors such as pH variation and unregulated Zn2+ diffusion would usually result in rapid failure metallic Zn anode. Considering high correlation among various triggers that induce anode deterioration, synergistic modulation strategy based on electrolyte modification is developed. Benefitting from unique buffer mechanism additive its capability to situ construct zincophilic solid interface, this effect can comprehensively manage thermodynamic kinetic properties inhibiting parasitic side reactions, accelerating de-solvation hydrated , regulating behavior realize uniform deposition. Thus, modified achieve an impressive lifespan at ultra-high current density areal capacity, operating stably for 609 209 hours 20 mA cm-2 mAh 40 respectively. Based exceptional performance, loading Zn||NH4 V4 O10 batteries excellent cycle stability rate performance. Compared with those previously reported single strategies, concept expected provide new approach highly stable zinc-ion batteries.

Язык: Английский

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Selectively etching-off the highly reactive (002) Zn facet enables highly efficient aqueous zinc-metal batteries

Energy & Environmental Science, Год журнала: 2023, Номер 17(2), С. 642 - 654

Опубликована: Ноя. 24, 2023

By selectively etching-off the chemically unstable (002) Zn facet, vertically aligned pillars of etched greatly suppress formation dendritic and water induced byproducts, thus enabling AZMBs with high coulombic efficiencies long lifespans.

Язык: Английский

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Trace-Additive-Mediated Hydrophobic Structure Editing of Aqueous Zinc Metal Batteries for Enabling All-Climate Long-Term Operation

ACS Energy Letters, Год журнала: 2023, Номер 8(12), С. 5229 - 5239

Опубликована: Ноя. 29, 2023

Sluggish transport kinetics and erratic electrode interface thermodynamics are the main culprits in deterioration of aqueous zinc metal batteries. Here, a concept trace-additive-mediated hydrophobic structure editing is presented, by adding trifunctional amphoteric poly(acrylic acid) (PAA) to reconstruct Zn2+ solvated situ self-assemble chemical adsorption layer on surface. As confirmed, can be enhanced coordinating with ionized PAA molecular chains. Moreover, such avoid direct contact between H2O electrodes inhibit side reaction dissolution. Thus, an impressive cumulative capacity 8232 mAh cm–2 at 5 mA was achieved extended lifespans 60 35 times −25 °C, respectively. proof concept, construction wide-temperature, durable full batteries demonstrates great promise integrated developing all-climate energy storage devices.

Язык: Английский

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In Situ Gas Analysis by Differential Electrochemical Mass Spectrometry for Advanced Rechargeable Batteries: A Review

Advanced Energy Materials, Год журнала: 2023, Номер 13(39)

Опубликована: Авг. 18, 2023

Abstract Lithium‐ion batteries (LIBs) and beyond‐LIB systems exhibit properties that are determined by electrochemical reactions occurring in their four essential components—the cathode, anode, electrolyte, separator. Advanced analytical methods such as differential mass spectrometry (DEMS) can assist understanding the behavior, which help advancing battery technologies. Recent studies have shown DEMS‐enabled real‐time gas analysis of provide valuable information on aspects gaseous reactants or (side) products, cannot be obtained appropriately through other characterization techniques. This review aims to a comprehensive overview latest developments advancements use DEMS rapid, operando gas‐monitoring method for advanced rechargeable systems. Moreover, significance current future development is also discussed insights provided into various chemistries benefit from applications. intended readers understand potential drive innovation industry.

Язык: Английский

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Strategies for pH regulation in aqueous zinc ion batteries

Energy storage materials, Год журнала: 2024, Номер 67, С. 103248 - 103248

Опубликована: Фев. 5, 2024

Aqueous zinc ions batteries (AZIBs) using non-organic electrolytes have garnered sustained interest as a future energy storage technology, primarily due to their low cost, environmental friendliness, and intrinsic safety. However, ion suffer from series of serious challenges, including hydrogen evolution reaction (HER) at the anode, surface passivation, dendrite formation, well limited operating voltage comparatively density. These factors are all influenced by concentration H+ in electrolyte (i.e., pH), its fluctuations during cycle process. To date, there remains lack systematic evaluation correlation between pH value challenges faced AZIBs, or focused review how influences electrochemical performance AZIBs strategies that can be used improve cell efficiency. In this we emphasize strong detail research progress made recent years relating additives, separator modification, interfacial protective layers, battery system design, with particular focus on regulatory mechanisms associated control. On basis, propose important focuses suggestions for onward development AZIBs.

Язык: Английский

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Synergy of Dendrites‐Impeded Atomic Clusters Dissociation and Side Reactions Suppressed Inert Interface Protection for Ultrastable Zn Anode

Advanced Materials, Год журнала: 2024, Номер 36(19)

Опубликована: Фев. 7, 2024

The sluggish ions-transfer and inhomogeneous ions-nucleation induce the formation of randomly oriented dendrites on Zn anode, while chemical instability at anode-electrolyte interface triggers detrimental side reactions. Herein, this report in situ designs a multifunctional hybrid interphase Bi/Bi

Язык: Английский

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Zinc iso-plating/stripping: toward a practical Zn powder anode with ultra-long life over 5600 h

Energy & Environmental Science, Год журнала: 2024, Номер 17(9), С. 3146 - 3156

Опубликована: Янв. 1, 2024

A zincophilic Bi-metal nanosheets guiding iso-plating/stripping strategy is developed to overcome Zn powder anode collapse and achieve ultra-long life.

Язык: Английский

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Assembly of Metal–Organic Chemical Conversion Layers as Ion Sieves along with Exposing Zn(002) Planes for Stable Zn Metal Anode

Advanced Functional Materials, Год журнала: 2024, Номер 34(25)

Опубликована: Янв. 20, 2024

Abstract The development of aqueous rechargeable Zn metal batteries, as one the most promising large‐scale energy storage technology, is hindered largely by dendrite growth and surface passivation anode, which are deleterious to battery life Coulombic efficiency (CE). This report demonstrates that ethylenediamine tetramethylenephosphonic acid can in situ coordinate with (EDTMP‐Zn) along exposing (002) planes for highly reversible stable plating/stripping. zincophilic EDTMP‐Zn layer may serve ion sieves homogenize flux at anode consequently induce uniform deposition Zn. hydrophobic groups such functional thought circumvent from corrosion hydrogen evolution reaction. EDTMP15‐Zn modified (EDTMP15‐Zn@Zn) delivers a lifespan exceeding 1400 h 5 mA cm −2 , 1 mAh Zn||Zn symmetric cell improved CE 99.7% over 1000 cycles Zn||Cu cell. full coupled NH 4 V O 10 cathode rate performance cycle stability.

Язык: Английский

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