Ten concerns of Zn metal anode for rechargeable aqueous zinc batteries

Joule, Год журнала: 2023, Номер 7(6), С. 1145 - 1175

Опубликована: Июнь 1, 2023

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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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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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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Polycation‐Regulated Electrolyte and Interfacial Electric Fields for Stable Zinc Metal Batteries

Angewandte Chemie International Edition, Год журнала: 2023, Номер 62(27)

Опубликована: Май 8, 2023

Zn metal as one of promising anode materials for aqueous batteries but suffers from disreputable dendrite growth, grievous hydrogen evolution and corrosion. Here, a polycation additive, polydiallyl dimethylammonium chloride (PDD), is introduced to achieve long-term highly reversible plating/stripping. Specifically, the PDD can simultaneously regulate electric fields electrolyte Zn/electrolyte interface improve Zn2+ migration behaviors guide dominant (002) deposition, which veritably detected by Zeta potential, Kelvin probe force microscopy scanning electrochemical microscopy. Moreover, also creates positive charge-rich protective outer layer N-rich hybrid inner layer, accelerates desolvation during plating process blocks direct contact between water molecules anode. Thereby, reversibility stability anodes are substantially improved, certified higher average coulombic efficiency 99.7 % Zn||Cu cells 22 times longer life Zn||Zn compared with that PDD-free electrolyte.

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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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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ZnF₂‐Riched Inorganic/Organic Hybrid SEI: in situ‐Chemical Construction and Performance‐Improving Mechanism for Aqueous Zinc‐ion Batteries

Angewandte Chemie International Edition, Год журнала: 2022, Номер 62(7)

Опубликована: Дек. 7, 2022

Uncontrolled dendrites growth and serious parasitic reactions in aqueous electrolytes, greatly hinder the practical application of zinc-ion battery. On basis situ-chemical construction performance-improving mechanism, multifunctional fluoroethylene carbonate (FEC) is introduced into electrolyte to construct a high-quality ZnF2 -riched inorganic/organic hybrid SEI (ZHS) layer on Zn metal anode (ZMA) surface. Notably, FEC additive can regulate solvated structure Zn2+ reduce H2 O molecules reactivity. Additionally, ZHS with strong affinity avoid formation direct contact between anode. Therefore, growth, corrosion, evolution reaction ZMA FEC-included ZnSO4 are highly suppressed. Thus, such realize long cycle life over 1000 h deliver stable coulombic efficiency 99.1 % after 500 cycles.

Язык: Английский

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Electrolyte Regulation of Bio‐Inspired Zincophilic Additive toward High‐Performance Dendrite‐Free Aqueous Zinc‐Ion Batteries

Small, Год журнала: 2023, Номер 19(10)

Опубликована: Янв. 17, 2023

Aqueous zinc-ion batteries hold attractive potential for large-scale energy storage devices owing to their prominent electrochemical performance and high security. Nevertheless, the applications of aqueous electrolytes have generated various challenges, including uncontrolled dendrite growth parasitic reactions, thereby deteriorating Zn anode's stability. Herein, inspired by superior affinity between Zn2+ amino acid chains in zinc finger protein, a cost-effective green glycine additive is incorporated into stabilize anode. As confirmed experimental characterizations theoretical calculations, additives can not only reorganize solvation sheaths hydrated via partial substitution coordinated H2 O but also preferentially adsorb onto anode, significantly restraining interfacial side reactions. Accordingly, anode could realize long lifespan over 2000 h enhanced reversibility (98.8%) glycine-containing electrolyte. Furthermore, assembled Zn||α-MnO2 full cells with glycine-modified electrolyte delivers substantial capacity retention (82.3% after 1000 cycles at 2 A g-1 ), showing promising application prospects. This innovative bio-inspired design concept would inject new vitality development electrolytes.

Язык: Английский

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Challenges and perspectives of hydrogen evolution-free aqueous Zn-Ion batteries

Energy storage materials, Год журнала: 2023, Номер 59, С. 102767 - 102767

Опубликована: Апрель 6, 2023

Язык: Английский

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