Metal–Organic Frameworks Functionalized Separators for Robust Aqueous Zinc-Ion Batteries

Nano-Micro Letters, Год журнала: 2022, Номер 14(1)

Опубликована: Ноя. 9, 2022

Aqueous zinc-ion batteries (AZIBs) are one of the promising energy storage systems, which consist electrode materials, electrolyte, and separator. The first two have been significantly received ample development, while prominent role separators in manipulating stability has not attracted sufficient attention. In this work, a separator (UiO-66-GF) modified by Zr-based metal organic framework for robust AZIBs is proposed. UiO-66-GF effectively enhances transport ability charge carriers demonstrates preferential orientation (002) crystal plane, favorable corrosion resistance dendrite-free zinc deposition. Consequently, Zn|UiO-66-GF-2.2|Zn cells exhibit highly reversible plating/stripping behavior with long cycle life over 1650 h at 2.0 mA cm-2, Zn|UiO-66-GF-2.2|MnO2 show excellent long-term capacity retention 85% after 1000 cycles. reasonable design application multifunctional frameworks provide useful guidance constructing durable AZIBs.

Язык: Английский

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A Dual‐Functional Organic Electrolyte Additive with Regulating Suitable Overpotential for Building Highly Reversible Aqueous Zinc Ion Batteries

Advanced Functional Materials, Год журнала: 2023, Номер 34(5)

Опубликована: Апрель 25, 2023

Abstract Aqueous zinc ion batteries (AZIBs) with high safety, low cost, and eco‐friendliness advantages show great potential in large‐scale energy storage systems. However, their practical application is hindered by Columbic efficiency unstable anode resulting from the side reactions deterioration of dendrites. Herein, tripropylene glycol (TG) chosen as a dual‐functional organic electrolyte additive to improve reversibility AZIBs significantly. Importantly, ab initio molecular dynamics theoretical simulations experiments such situ electrochemical impedance spectroscopy, synchrotron radiation‐based Fourier transform infrared spectroscopy confirm that TG participates solvation sheath Zn 2+ , regulating overpotential inhibiting reactions; meanwhile, inhibits dendrites modifies direction deposition constructing an adsorbed layer on anode. Consequently, Zn‐MnO 2 full cell exhibited specific capacity 124.48 mAh g ‐1 after 1000 cycles at current density 4 A . This quantitative regulation for suitable anode, its easy scalability process can be immediate benefit dendrite‐free, high‐performance, low‐cost

Язык: Английский

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Reversible adsorption with oriented arrangement of a zwitterionic additive stabilizes electrodes for ultralong-life Zn-ion batteries

Energy & Environmental Science, Год журнала: 2023, Номер 16(6), С. 2684 - 2695

Опубликована: Янв. 1, 2023

A zwitterionic additive ( l -CN) with a positively charged quaternary ammonium site and multifunctional polar groups was employed to achieve ultralong-life Zn-ion batteries.

Язык: Английский

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In Situ Construction of Anode–Molecule Interface via Lone‐Pair Electrons in Trace Organic Molecules Additives to Achieve Stable Zinc Metal Anodes

Advanced Energy Materials, Год журнала: 2023, Номер 13(22)

Опубликована: Апрель 25, 2023

Abstract The practical application of aqueous zinc batteries (AZBs) is significantly limited by the poor reversibility anodes, including rampant dendrite growth and severe interfacial side‐reactions. Herein, trace hexamethylenetetramine (HMTA) additive with a lone‐pair‐electron containing heterocycle introduced for Zn metal anode protection. Specifically, added HMTA can change solvated structure strong interaction ions, preferentially absorb on surface to in situ establish an unique anode–molecule interface. Such interface not only shows affinity promote dynamic transmission deposition 2+ ions but also displays role suppressing parasitic reactions. Consequently, electrolyte achieves high Coulombic efficiency 99.75%, delivers remarkable lifespan over 4000 h at 5 mA cm −2 1 mAh Zn//Zn symmetric cell. Even under deep plating/stripping condition (5 ), it still run almost 600 h. Additionally, Zn//V 2 O full cell retains capacity retention 61.7% after cycles A g −1 . innovative strategy expected be immediate benefit design low‐cost AZBs ultra‐long lifespan.

Язык: Английский

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Guiding Zn Uniform Deposition with Polymer Additives for Long‐lasting and Highly Utilized Zn Metal Anodes

Angewandte Chemie International Edition, Год журнала: 2023, Номер 62(51)

Опубликована: Ноя. 6, 2023

The parasitic side reaction on Zn anode is the key issue which hinders development of aqueous Zn-based energy storage systems power-grid applications. Here, a polymer additive (PMCNA) engineered by copolymerizing 2-methacryloyloxyethyl phosphorylcholine (MPC) and N-acryloyl glycinamide (NAGA) was employed to regulate deposition environment for satisfying inhibition performance during long-term cycling with high utilization. PMCNA can preferentially adsorb metal surface form uniform protective layer effective water molecule repelling resistance. In addition, guide nucleation along 002 plane further dendrite suppression. Consequently, enable Zn//Zn battery an ultrahigh depth discharge (DOD) 90.0 % over 420 h, Zn//active carbon (AC) capacitor long lifespan, Zn//PANI utilization 51.3 at low N/P ratio 2.6.

Язык: Английский

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Building Sustainable Saturated Fatty Acid-Zinc Interfacial Layer toward Ultra-Stable Zinc Metal Anodes

Nano Letters, Год журнала: 2023, Номер 23(8), С. 3573 - 3581

Опубликована: Апрель 12, 2023

The commercialization pace of aqueous zinc batteries (AZBs) is seriously limited due to the uncontrolled dendrite growth and severe corrosion reaction anode. Herein, a universal extendable saturated fatty acid-zinc interfacial layer strategy for modulating redox process toward ultrastable Zn metal anodes proposed. in situ complexing interphases could construct an extremely thin compound with continuously constructed zincophilic sites which kinetically regulates nucleation deposition behaviors. Furthermore, multifunctional internal hydrophobic carbon chains as protective efficient exclude active water molecules from surface efficiently inhibit zinc. Consequently, modified anode shows long cycle life over 4000 h at 5 mA cm–2. In addition, assembled Zn||V2O5 full cells based on have excellent rate performance stability.

Язык: Английский

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Molecular brush: an ion-redistributor to homogenize fast Zn²⁺flux and deposition for calendar-life Zn batteries

Energy & Environmental Science, Год журнала: 2023, Номер 16(4), С. 1610 - 1619

Опубликована: Янв. 1, 2023

A surface-grafting strategy of molecular brushes is demonstrated to create a robust ion-regulating interface toward calendar-life Zn anodes with high Coulombic efficiency 99.9% and ultralong cyclability over 2500 h at 10 mA cm −2 .

Язык: Английский

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Alleviating Side Reactions on Zn Anodes for Aqueous Batteries by a Cell Membrane Derived Phosphorylcholine Zwitterionic Protective Layer

Angewandte Chemie International Edition, Год журнала: 2023, Номер 62(31)

Опубликована: Июнь 19, 2023

Aqueous zinc (Zn) ion batteries are attractive for next generation with high safety, yet their applications still hindered by the uncontrollable dendrite formation and side reactions on Zn anode. Here, a polyzwitterion protective layer (PZIL) was engineered polymerizing 2-methacryloyloxyethyl phosphorylcholine (MPC) in carboxymethyl chitosan (CMCS), which renders following merits: choline groups of MPC can preferentially adsorb onto metal to avoid reactions; charged phosphate chelate Zn2+ regulate solvation structure, further improving reaction inhibition; Hofmeister effect between ZnSO4 CMCS enhance interfacial contact during electrochemical characterization. Consequently, symmetrical battery PZIL keep stable more than 1000 hours under ultra-high current density 40 mA cm-2 . The confers Zn/MnO2 full Zn/active carbon (AC) capacitor cycling performance density.

Язык: Английский

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Insight on the Double‐Edged Sword Role of Water Molecules in the Anode of Aqueous Zinc‐Ion Batteries

Small Structures, Год журнала: 2022, Номер 3(12)

Опубликована: Сен. 23, 2022

As promising candidates for aqueous metal batteries, zinc‐ion batteries (ZIBs) have attracted more attention due to their superior safety, low cost, and environmentally benign characteristics. Solvent water plays a double‐edged sword role that cannot be ignored in the electrochemical performance long cycling stability of batteries. The hydrated zinc ions solvated structure can boost diffusion kinetics ions, whereas released active molecules during desolvation lead notorious hydrogen evolution reactions, dendrites growth, surface passivation at unstable interface between electrolyte anode. Unlike previous reports summarize recent research progress, this review focuses on anode processes ZIBs. influencing mechanism energy storage process is systematically discussed, including basic theory, regulation strategies, reports. two‐faced identity profoundly revealed herein, some revelatory insights possible strategies are provided future design stable durable anodes high‐performance

Язык: Английский

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A Theory‐Driven Complementary Interface Effect for Fast‐Kinetics and Ultrastable Zn Metal Anodes in Aqueous/Solid Electrolytes

Advanced Energy Materials, Год журнала: 2023, Номер 13(18)

Опубликована: Март 2, 2023

Abstract The undesirable side reactions and uncontrolled deposition leads to the electrochemical failure of Zn metal anodes. Herein, driven by theory calculations, a surface texture engineering passivation layer protection dual‐interface strategy is developed. Benefiting from complementary interface effect, such can realize integrated regulation interfacial transport deposition. That is, inhibiting water‐induced reactions, accelerating de‐solvation hydrated zinc ions, homogenizing ion flux, guiding Zn(002)‐preferred orientation As result, modulated electrode enables significantly extended stability smaller nucleation barrier polarization effect. Unexpectedly, it steadily operate for 6600 h at 0.5 mA cm −2 , corresponding lifespan >9 months. Highly reversible plating stripping be still retained when current density improved up 1, 5, 10, even 20 . Beyond that, applied batteries, enhanced rate capability, cyclic realized in both aqueous Zn/MnO 2 batteries solid‐state Zn/VO batteries. This design concept effect expected provide new insight into high reversibility

Язык: Английский

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