Manipulating Zn 002 deposition plane with zirconium ion crosslinked hydrogel electrolyte toward dendrite free Zn metal anodes

Energy & Environmental Science, Год журнала: 2023, Номер 16(10), С. 4561 - 4571

Опубликована: Янв. 1, 2023

A Zr 4+ crosslinked hydrogel electrolyte is demonstrated on side reaction resistance for high-performance aqueous Zn-based devices.

Язык: Английский

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Tough Liquid‐Free Ionic Conductive Elastomers with Robust Adhesion and Self‐Healing Properties for Ionotronic Devices

Advanced Functional Materials, Год журнала: 2023, Номер 34(4)

Опубликована: Окт. 20, 2023

Abstract Polymerizable deep eutectic solvent (PDES) as a newly emerging type of liquid‐free ionic conductive elastomer is considered to be the most attractive candidate for next generation ionotronic devices. However, it remains huge challenge integrate high conductivity, excellent mechanical properties, good self‐healing capacity, and robust adhesion into single material that satisfies stringent demand devices in various scenarios. Herein, constructed by incorporating tannic acid‐encapsulated cellulose nanocrystals (TA@CNC) multifunctional hydrogen bond donors (HBDs) along with poly(acrylic acid) choline chloride (hydrogen acceptors, HBAs) form dynamic cross‐linking network through multiple bonds. The presence rigid crystalline regions sufficient interaction sites on TA@CNC endow resultant elastomers (ACTC) superior properties (≈496 kPa, 2400%), (≈68.6 kPa), property. Benefiting from above integrated features, wearable sensors harnessing ACTC resistance sensing module provide unaltered performance under off‐axial deformation (twisting prick). Additionally, capacitance pressure sensor stability force distribution developed, opening up new avenue development

Язык: Английский

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Tough, Anti‐Fatigue, Self‐Adhesive, and Anti‐Freezing Hydrogel Electrolytes for Dendrite‐Free Flexible Zinc Ion Batteries and Strain Sensors

Advanced Functional Materials, Год журнала: 2024, Номер 34(26)

Опубликована: Фев. 27, 2024

Abstract Quasi‐solid aqueous zinc ion batteries (AZIBs) based on flexible hydrogel electrolytes are promising substitutions of lithium‐ion owing to their intrinsic safety, low cost, eco‐friendliness and wearability. However, it remains a challenge lower the freezing point without sacrificing fundamental advantages such as conductivity mechanical properties. Herein, an all‐around electrolyte is constructed through convenient energy dissipation strategy via rapid reversible intramolecular/intermolecular ligand exchanges between Zn 2+ alterdentate ligands. The as‐obtained exhibits excellent properties, fatigue resistance, high Zn‐ion (38.2 mS cm −1 ), good adhesion (19.1 kPa), ultra‐low (−97 °C). Due ligands help improve solvation structure guide uniform deposition, Zn||Zn symmetric cells show stable plating/stripping behavior long‐term cycle stability. Zn||V 2 O 5 full exhibit large capacity 230.6 mAh g retention 75.2% after 1000 cycles. Furthermore, AZIBs operate stably even under extreme conditions including temperature (−40 °C) bending angle (180°). mechanically damage‐resistant can also be utilized in strain sensors. This work offers facile for developing deformation‐resistant, dendrite‐free, environmentally adaptable AZIBs.

Язык: Английский

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Advanced electrolytes for high-performance aqueous zinc-ion batteries

Chemical Society Reviews, Год журнала: 2024, Номер unknown

Опубликована: Янв. 1, 2024

This review presents an comprehensive overview of various advanced aqueous electrolytes for zinc-ion batteries, including “water-in-salt” electrolytes, eutectic molecular crowding and hydrogel electrolytes.

Язык: Английский

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Polymers for Aqueous Zinc‐Ion Batteries: From Fundamental to Applications Across Core Components

Advanced Energy Materials, Год журнала: 2024, Номер 14(12)

Опубликована: Фев. 19, 2024

Abstract Aqueous zinc‐ion batteries (AZIBs) comprising zinc anodes hold intrinsic safety and high energy density ideally for distributed large‐scale storage, thus have generated intriguing properties increasing research interests. Unlike organic batteries, AZIBs require different, sometimes even opposite design principles preparation strategies in solvent, electrolyte, separator. This is especially true the polymer materials that are widely used as critical components stabilizing metal functioning high‐performance safe cathode materials. review discusses explicit compositional structural requisite of polymeric AZIBs, with an emphasis on exclusive molecular structure–property relationship governs stability, reversibility, capacity these devices. The usage polymers classified into five categories aligning primary architecture AZIBs: separators, additives, hydrogel electrolytes, coatings, electrode most recent advances structure/property interplay by novel synthesis techniques targeting stable summarized discussed. challenges perspectives multifunctional developing also proposed.

Язык: Английский

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Molecular Engineering Enables Hydrogel Electrolyte with Ionic Hopping Migration and Self‐Healability toward Dendrite‐Free Zinc‐Metal Anodes

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

Опубликована: Янв. 30, 2024

Abstract Hydrogel electrolytes (HEs), characterized by intrinsic safety, mechanical stability, and biocompatibility, can promote the development of flexible aqueous zinc‐ion batteries (FAZIBs). However, current FAZIB technology is severely restricted uncontrollable dendrite growth arising from undesirable reactions between HEs with sluggish ionic conductivity Zn metal. To overcome this challenge, work proposes a molecular engineering strategy, which involves introduction oxygen‐rich poly(urea‐urethane) (OR‐PUU) into polyacrylamide (PAM)‐based HEs. The OR‐PUU/PAM facilitate rapid ion transfer through their hopping migration mechanism, resulting in uniform orderly 2+ deposition. abundant polar groups on OR‐PUU molecules break inherent H‐bond network, tune solvation structure hydrated , inhibit occurrence side reactions. Moreover, interaction hierarchical H‐bonds endows them self‐healability, enabling situ repair cracks induced plating/stripping. Consequently, symmetric cells incorporating novel exhibit long cycling life 2000 h. Zn–MnO 2 battery displays low capacity decay rate 0.009% over cycles at mA g −1 . Overall, provides valuable insights to realization dendrite‐free Zn‐metal anodes

Язык: Английский

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Construction of Robust Organic–Inorganic Interface Layer for Dendrite‐Free and Durable Zinc Metal Anode

Advanced Functional Materials, Год журнала: 2024, Номер 34(19)

Опубликована: Янв. 14, 2024

Abstract Constructing artificial interface layer is an effective approach to facilitate the utilization rate of zinc metal, but practical application still hindered by inferior mechanical strength, low ionic conductivity, and poor stability. Herein, robust organic–inorganic (Nafion/BM@Zn) coated on metal through ultrasonic spraying method with boehmite Nafion as composite precursor. As demonstrated, high cation selectivity hydrophilicity Nafion, well zincophilic property layered structure boehmite, synergistically contribute nucleation barrier, uniform deposition, fast transport kinetics Zn 2+ ions. a result, Nafion/BM@Zn anode exhibits superior reversibility Coulombic efficiency 99.9% for 9000 cycles in asymmetrical cells durable cycling stability 4200 h symmetrical at 5 mA cm −2 −1 mAh . Even seawater‐based electrolyte, displays reversible deposition behavior 820 99.91% 2800 Furthermore, corresponding Nafion/BM@Zn//NH 4 V O 10 cell presents capacity 258.4 g after 1500 A This work provides new design strategy high‐efficiency interfacial anode.

Язык: Английский

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Designing single-ion conductive electrolytes for aqueous zinc batteries

Matter, Год журнала: 2024, Номер 7(6), С. 1928 - 1949

Опубликована: Апрель 18, 2024

Язык: Английский

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Hydrogen Bond Network Regulation in Electrolyte Structure for Zn‐based Aqueous Batteries

Advanced Functional Materials, Год журнала: 2024, Номер 34(37)

Опубликована: Апрель 21, 2024

Abstract Electrolyte regulation in Zn‐based aqueous batteries (ZABs) has been extensively reported, and a broad range of strategies proposed. However, there is currently lack systematic summaries comprehensive understanding the impact hydrogen bond (H‐bond) networks on electrolyte performance. This work presents structure model, encompassing solvation structure, electrolyte/Zn anode interface, H‐bond network. Through emphasizing summarizing reconstruction, strengthening, breaking network within various specific are identified, such as high Gutmann donor number solvent, organic co‐solvent, molecular crowding additives, structure‐breaking ions, solid‐state design. A critical appraisal then provided key performance metrics influenced by these methods, including Coulomb efficiency, voltage hysteresis, freezing point, lifespan. expected to illustrate design improve ZABs. Last, data‐driven summary outlook provided, objectively evaluate overall performances

Язык: Английский

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Ultra‐Stable Zinc Anodes Facilitated by Hydrophilic Polypropylene Separators with Large Scale Production Capacity

Advanced Functional Materials, Год журнала: 2024, Номер 34(44)

Опубликована: Июнь 27, 2024

Abstract Electrochemical Performance of aqueous Zn‐ion batteries (AZIBs) is prominently constrained by poor stability zinc‐metal anodes. However, the use conventional separators unfavorable to uniform deposition Zn metal and restricted cell cycle life, has hindered large‐scale application such battery systems. Here, a separator with hydrophobic/hydrophilic structural domains (marked as PP‐g‐AA) reported, where polypropylene (PP) polymer backbone permits partial blockage water molecules prevent side reactions, carboxyl functional groups in grafted acrylic acid (AA) facilitate well regulate interfacial electric field 2+ ion concentration field, thus remarkably promotes homogenization zinc flux, achieving dendritic‐free . Moreover, PP‐g‐AA sustains long‐term cycling over 4000 h at current density 2 mA cm −2 high Coulombic efficiency 99.6% achieved Zn||Cu cells, which if assembled into Zn||Zn 0.27 V O 5 ·nH (ZVO) cells would yield ≈100% retention for 1000 cycles. This research highlights that strategy opens up new avenue based on further decreasing cost promoting industrial AZIBs.

Язык: Английский

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