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 Double-Functional Additive Containing Nucleophilic Groups for High-Performance Zn-Ion Batteries

ACS Nano, Год журнала: 2023, Номер 17(2), С. 1610 - 1621

Опубликована: Янв. 3, 2023

Aqueous zinc-ion batteries (AZIBs) have attracted attention for their low cost and environmental friendliness. Unfortunately, commercialization has been hampered by several problems with dendrite growth side reactions. Herein, we select sodium tartrate (TA-Na) as a dual-functional electrolyte additive to enhance the reversibility of AZIBs. The anions are preferentially adsorbed on Zn surface, then highly nucleophilic carboxylate will coordinate Zn2+ promote desolvation [Zn(H2O)6]2+, leading uniform deposition beneficial (002) plane inhibiting reactions growth. Consequently, Zn|Zn cells show long-term cycling stability over 1500 cycles at 0.5 mA cm–2. Moreover, Ta-Na improves performance Zn||MnO2 full cells, evidenced life 1000 1 A g–1 under practical conditions limited anode (negative/positive capacity ratio 10/1) controlled (electrolyte/capacity 20 μL mAh–1).

Язык: Английский

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Anode corrosion in aqueous Zn metal batteries

eScience, Год журнала: 2023, Номер 3(1), С. 100093 - 100093

Опубликована: Янв. 11, 2023

Given their low cost and intrinsic safety, aqueous Zn metal batteries (AZMBs) are drawing increasing attention in the field of smart grids large-scale energy storage. However, anode electrolyte suffers from a critical issue, corrosion, which must be fully addressed before practical implementation AZMBs. In this perspective, mechanisms corrosion both alkaline neutral electrolytes compared discussed. The methods for studying processes strategies protection AZMBs also summarized. Finally, some expectations about potential research directions making corrosion-resistant commercial reality provided.

Язык: Английский

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Addition of Dioxane in Electrolyte Promotes (002)-Textured Zinc Growth and Suppressed Side Reactions in Zinc-Ion Batteries

ACS Nano, Год журнала: 2023, Номер 17(4), С. 3765 - 3775

Опубликована: Фев. 8, 2023

The reversibility and cyclability of aqueous zinc-ion batteries (ZIBs) are largely determined by the stabilization Zn anode. Therefore, a stable anode/electrolyte interface capable inhibiting dendrites side reactions is crucial for high-performing ZIBs. In this study, we investigated adsorption 1,4-dioxane (DX) to promote exposure (002) facets prevent dendrite growth. DX appears reside at suppress detrimental reactions. ZIBs with addition demonstrated long-term cycling stability 1000 h in harsh conditions 10 mA cm–2 an ultrahigh cumulative plated capacity 5 Ah shows good average Coulombic efficiency 99.7%. Zn//NH4V4O10 full battery achieves high specific (202 mAh g–1 A g–1) retention (90.6% after 5000 cycles), much better than that pristine ZnSO4 electrolyte. By selectively adjusting Zn2+ deposition rate on crystal adsorbed molecules, work provides promising modulation strategy molecular level anodes can potentially be applied other metal suffering from instability irreversibility.

Язык: Английский

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Modulating Cation Migration and Deposition with Xylitol Additive and Oriented Reconstruction of Hydrogen Bonds for Stable Zinc Anodes

Angewandte Chemie International Edition, Год журнала: 2023, Номер 62(10)

Опубликована: Янв. 17, 2023

Highly reversible plating/stripping in aqueous electrolytes is one of the critical processes determining performance Zn-ion batteries, but it severely impeded by parasitic side reaction and dendrite growth. Herein, a novel electrolyte engineering strategy first proposed based on usage 100 mM xylitol additive, which inhibits hydrogen evolution accelerates cations migration expelling active H2 O molecules weakening electrostatic interaction through oriented reconstruction bonds. Concomitantly, are preferentially adsorbed Zn surface, provides shielding buffer layer to retard sedimentation suppress planar diffusion Zn2+ ions. transference number cycling lifespan Zn∥Zn cells have been significantly elevated, overwhelmingly larger than bare ZnSO4 . The cell coupled with NaV3 O8 cathode still behaves much better additive-free device terms capacity retention.

Язык: Английский

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Nonepitaxial Electrodeposition of (002)‐Textured Zn Anode on Textureless Substrates for Dendrite‐Free and Hydrogen Evolution‐Suppressed Zn Batteries

Advanced Materials, Год журнала: 2023, Номер 35(21)

Опубликована: Март 2, 2023

Nontoxic and safe aqueous Zn batteries are largely restricted by the detrimental dendrite growth hydrogen evolution of metal anode. The (002)-textured electrodeposition, demonstrated as an effective approach for solving these issues, is nevertheless achieved mainly epitaxial or hetero-epitaxial deposition on pre-textured substrates. Herein, electrodeposition compact textureless substrates (commercial Zn, Cu, Ti foils) at a medium-high galvanostatic current density reported. According to systematic investigations nucleation behaviors, this ascribed two reasons: i) promoted nonepitaxial fine horizontal (002) nuclei increased overpotential ii) competitive advantages (002)-orientated nuclei. resulting freestanding film exhibits significantly suppressed prolonged plating-stripping cycling life, achieving over 2100 mAh cm-2 cumulative capacity under 10 mA high depth discharge (DOD) 45.5%. Therefore, study provides both fundamental practical insights into long-life batteries.

Язык: Английский

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High‐Capacity Zinc Anode with 96 % Utilization Rate Enabled by Solvation Structure Design

Angewandte Chemie International Edition, Год журнала: 2022, Номер 62(3)

Опубликована: Ноя. 5, 2022

Aqueous zinc-ion batteries (AZBs) show promises for large-scale energy storage. However, the zinc utilization rate (ZUR) is generally low due to side reactions in aqueous electrolyte caused by active water molecules. Here, we design a novel solvation structure introduction of sulfolane (SL). Theoretical calculations, molecular dynamics simulations and experimental tests that SL remodels primary shell Zn2+ , which significantly reduces Zn anode achieves high ZUR under large capacities. Specifically, symmetric asymmetric cells could achieve maximum ∼96 % at an areal capacity 24 mAh cm-2 . In ∼67 %, developed Zn-V2 O5 full cell can be stably cycled 500 cycles with density 180 Wh kg-1 Zn-AC capacitor stable 5000 cycles. This structural engineering strategy provides new insight into achieving anodes performance AZBs.

Язык: Английский

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Kinetics‐Boosted Effect Enabled by Zwitterionic Hydrogel Electrolyte for Highly Reversible Zinc Anode in Zinc‐Ion Hybrid Micro‐Supercapacitors

Advanced Energy Materials, Год журнала: 2022, Номер 12(40)

Опубликована: Авг. 25, 2022

Abstract Despite impressive merits of complementary charge‐storage mechanisms for aqueous Zn‐ion hybrid micro‐supercapacitors (ZHMSCs), it remains a challenge to solve dendrite and parasitic reactions issues Zn anodes. Herein, kinetics‐boosted strategy 2+ transport desolvation hydrated is proposed by engineering zwitterionic P(AM‐ co ‐SBMA) hydrogel electrolyte (PASHE) highly reversible plating/stripping. Mechanically robust chemically anchored PASHE features groups constructing ion migration channels immobilizing water molecules, which accelerates an ultrahigh transfer number (0.84) alleviates water‐related reactions. Theoretical calculations combined with experimental results reveal that sulfobetaine sulfonate anions endow improved kinetics the ability coordinate flux electric field distributions at electrolyte–electrode interface. Thus, anodes exhibit excellent electrochemical performance involving high average coulombic efficiency 99.4% in Zn|PASHE|Cu cell as well cumulative capacity 2000 mAh cm −2 (20 mA , 1 ) depth discharge 80.9% 10 Zn|PASHE|Zn cells. Furthermore, ZHMSCs based on deliver flexibility cyclability energy‐storage applications. This work provides useful insights developing high‐performance derived devices.

Язык: Английский

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Amphoteric Cellulose‐Based Double‐Network Hydrogel Electrolyte Toward Ultra‐Stable Zn Anode

Angewandte Chemie International Edition, Год журнала: 2023, Номер 62(13)

Опубликована: Фев. 1, 2023

Zinc (Zn) metal anode suffers from uncontrollable Zn dendrites and parasitic side reactions at the interface, which restrict practical application of aqueous rechargeable zinc batteries (ARZBs). Herein, an amphoteric cellulose-based double-network is introduced as hydrogel electrolyte to overcome these obstacles. On one hand, groups build anion/cation transport channels regulate electro-deposition behavior on (002) crystal plane enabled by homogenizing Zn2+ ions flux. other strong bonding between negatively charged carboxyl promote desolvation process [Zn(H2 O)6 ]2+ eliminate reactions. Based above two functions, enables ultra-stable cycling with a cumulative capacity 7 Ah cm-2 20 mA /20 mAh for Zn||Zn cell. This work provides significant concepts developing electrolytes realize stable high-performance ARZBs.

Язык: Английский

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Interfacial Double‐Coordination Effect Guiding Uniform Electrodeposition for Reversible Zinc Metal Anode

Advanced Energy Materials, Год журнала: 2023, Номер 14(2)

Опубликована: Ноя. 30, 2023

Abstract The long‐term reversible plating/stripping of Zn metal anode is a critical aspect within aqueous zinc‐ion batteries (ZIBs). However, it limited by uncontrolled electrodeposition and side reactions occurring at the anode/electrolyte interface. Guided metal‐coordination chemistry, novel additive, sodium diphenylamine sulfonate (DASS), added into ZnSO 4 electrolyte to guide stably invertible zinc deposition. Theoretical calculations experimental results reveal that DASS can adsorbed on surface due strong double coordination effect between N, S sites (Zn─N, Zn─S), this layer not only prevent intimate contact H 2 O inhibit interfacial reactions, but also 3D 2+ ion diffusion uniform dendrites. Consequently, additive enables an ultra‐long stable cycling up 2400 h 1 mA cm −2 (1 mAh ), even ultra‐high current density 20 , 250 demonstrated, highlighting reliable This study offers new perspective double‐coordination for achieving highly anodes in rechargeable batteries.

Язык: Английский

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